Using Harmony hardware wallet on the Ledger requires a few things. You will need:

• Your Ledger

• The Harmony app installed on your Ledger

The LayerZero-Harmony Bridge Interface (“Interface”) is an interface that facilitates use of a third-party cross-chain communication system (“Bridge”) that is designed to enable users to send messages between certain blockchains to enable the exchange of crypto assets between such blockchains. Your use of the Interface and the Bridge is entirely at your own risk.

The Interface and the Bridge are available on an “as is” basis without warranties of any kind, either express or implied, including, but not limited to, warranties of merchantability, title, fitness for a particular purpose and non-infringement.

You assume all risks associated with using the Interface and the Bridge, and digital assets and decentralized systems generally, including but not limited to, that: (a) digital assets are highly volatile; (b) using digital assets is inherently risky due to both features of such assets and the potential unauthorized acts of third parties; (c) you may not have ready access to assets; and (d) you may lose some or all of your tokens or other assets. You agree that you will have no recourse against anyone else for any losses due to the use of the Interface or the Bridge. For example, these losses may arise from or relate to: (i) incorrect information; (ii) software or network failures; (iii) corrupted cryptocurrency wallet files; (iv) unauthorized access; (v) errors, mistakes, or inaccuracies; or (vi) third-party activities.

The Interface and the Bridge do not collect any personal data, and your interaction with the Interface and the Bridge will solely be through your public digital wallet address. Any personal or other data that you may make available in connection with the Bridge may not be private or secure.

Harmony is an open and fast blockchain. Our mainnet runs Ethereum applications with 2-second transaction finality and 1000 times lower fees.

Harmony is your open platform for assets, collectibles, identity, governance.

Build on Harmony

This Gitbook document has introduction and resources for all audience:

• 🎶 – technical features, application showcases, ecosystem partners, community channels.

• 🏗️ – web3 toolkits, deploy tutorials, open bounties, hackathon prizes.

• 🌏 – token wallets, delegator economics, validator setup, governance dao.

Bridge to All Chains

• 🧠 – Market Research by Founder, Stephen Tse

• 💪 – AI Agents, DeFi on Exchange.one, 1-Second Finality

The Harmony team is focused on delivering a strong foundation for our network and ecosystem. We are grateful for the engagement and support of our validators, developers, community members, grantees and collaborators. Our current ecosystem map as of February 2022 is below and only includes a portion of projects launched on the Harmony network.

See below our 2021 Year in Review & Ecosystem Growth:

Harmony in 2021 will focus on adoption through developers and partners. We will continue to strengthen our network features, to lead industry in our cross-chain architecture, and to engage broad ecosystem to build with us. There will be explosive growth and new applications this year in blockchains — Harmony is ready to be leading a part of this global fintech revolution.

Towards our mission, Harmony’s current strategy is “Cross-Chain Finance” as decentralized finance and interoperable protocols are the product-market fit in 2021. We are building trustless bridges to Bitcoin and Ethereum for broader access of users and assets with Harmony as a hub. An example of utility is a cross-chain exchange without custodial risks. Our current settlement layer and soon liquidity infrastructure will enable further financial innovations, leading to cross-exchange integrations and cross-border finance.

Read more:

Harmony’s 2025 roadmap focuses on achieving 1-second finality, unifying decentralized finance, and creating an open AI ecosystem.

We are continuously upgrading our protocol for seamless performance with enhancements such as Verkle Trees, State Expiry, and improved network resilience through Stream Sync and Leader Rotation. These innovations power platforms like pump.one for memecoin creation and exchange.one for stablecoins and perpetual trading. Meanwhile, the .country top-level domains enable AI agents to own self-custodial wallets and domains.

We aim to simplify DeFi, expand liquidity, and attract new users. Innovations such as yield enhancer and perpetual options markets, combined with AI-driven frameworks like Eliza OS—empowering autonomous agents for trading, governance, and decision-making—are designed to make DeFi intuitive and accessible to everyone. By leveraging AI to create cult-like memes and autonomous agents that amplify engagement through viral narratives and real-time market insights, we aim to redefine community-driven finance with creativity and precision.

These advancements aim to onboard millions of DeFi assets, billions of community memes, and trillions of intelligent models. Together, these efforts reflect our vision for 2025: building a blockchain that is fast, simple, and accessible to everyone.

Crypto Startup School

Learn how to build a crypto company. The course videos from a16z’s Crypto Startup School, held in the spring of 2020, are now available to all. Use the hours of free videos and the reading materials, below, to navigate the idea maze and start building crypto projects. .

Crypto Thesis for 2021

A Messari report: key trends, people, companies, and projects to watch across crypto, Bitcoin, and Ethereum, with predictions for 2021. .

NFT Canon

Plug in your Ledger and open the Harmony Ledger App. Your device will be detected by your computer.

Start from the staking dashboard: and click the "sign-in" button.

You will be directed to the Validators page on the Staking Dashboard and a small trident logo will appear on the chrome tab. Your Ledger Nano will display "waiting for commands" before you click on any buttons.

Ledger Nano X and Nano S

The Nano X and Nano S are hardware wallets created by Ledger. A hardware wallet stores the private keys to Harmony tokens on a separate device, making it much harder for malicious parties to steal them. In fact, the private keys never leave the Nano wallet itself, so they will remain secure even if the device is connected to a compromised computer. As long as you follow best practices when using your Nano, it is virtually impossible for an attacker to steal your funds.

Secure, Random State Sharding

Harmony has transcended the blockchain trilemma by bringing the best research to production. Sharding is proven to scale blockchains without compromising security and decentralization.

We divide not only our network nodes but also the blockchain states into shards, scaling linearly in all three aspects of machines, transactions and storages.

To prevent single shard attacks, we must have a sufficiently large number of nodes per shard and cryptographic randomness to re-shard regularly. Each shard has 1/4 of nodes for strong security guarantee against Byzantine behaviors. We use Verifiable Random Function (VRF) for un-biased and unpredictable shard membership.

Fast Consensus w/ Instant Finality

Harmony has innovated on the battle-tested Practical Byzantine Fault Tolerance (PBFT) for fast consensus of block transactions. Our Fast BFT (FBFT) leads to low transaction fees and 1-block-time finality in Harmony Mainnet.

We use Boneh–Lynn–Shacham (BLS) constant-sized signatures to commit blocks in a single round of consensus messages. We achieve 2-second block time with view changes in production against adversarial or unavailable leaders.

Harmony Mainnet was launched in June 2019. Our network has produced 30M+ blocks with 450k+ transactions in publicly traded, native ONE tokens.

Effective PoS & Token Economics

Harmony has designed a novel Proof-of-Stake (PoS) mechanism for network security and economics. Our Effective Proof-of-Stake (EPoS) reduces centralization and distributes rewards fairly to thousands of validators.

Our staking mechanism supports delegation and reward compounding. To support 100% uptime but fully open participation, EPoS slashes validators who double-sign and it penalizes elected but unavailable nodes.

Harmony Economics Model caps the annual issuance at 441 million tokens (about 3% rate in long term). Our model gives validators a simple and predictable return. All transaction fees are burnt to offset the issuance, naturally leading to zero inflation when our network usage becomes high.

On-chain Verifiable Randomness

Harmony allows smart contracts to receive random numbers on chain, using a Verifiable Random Function (VRF) powered by distributed randomness generation (DRG). This allows any DAPP in the Harmony ecosystem to leverage randomness without relying on off-chain oracles.

Harmony’s sharding approach depends on a secure randomness source so the validators can be assigned to shards in a truly random manner to avoid single-shard attacks. Harmony designed a distributed randomness generation (DRG) protocol which involves both VRF (Verifiable Random Function) and VDF (Verifiable Delay Function) to achieve the follows key properties:

1. Unpredictable: No one should be able to predict the random number before it is generated.

2. Un-biased: The process of generating the random number should not be biasable by any participant.

3. Verifiable: The validity of the generated random number should be verifiable by any observer.

4. Scalable: The algorithm of randomness generation should scale to a large number of participants.

Since the random assignment (resharding) of validators only happens every epoch, Harmony’s DRG protocol only needs to execute once per epoch. It works as follows:

1. During the epoch, each validator takes turns to become the FBFT leader and at the end of the epoch, all validators should have become leader for at least once. Each new leader runs VRF to create a random number R and a proof P using its BLS key. The random number and the proof will be attached to the first proposed block by the leader, which will be verified by the validators and committed to the blockchain.

2. As soon as more than 2/3 of the validators have done the VRF submission, the immediate next leader will combine all the submitted random numbers with an XOR operation to get the preimage pRnd of the final randomness.

3. The leader runs FBFT among all the validators to reach consensus on the pRnd and commit it in block.

The VDF (Verifiable Delay Function) is used to delay the revelation of the final randomness in order to be secure against last-revealer-attack.The VDF is used to provably delay the revelation of Rnd and prevent the last leader from biasing the randomness by choosing to submit or not the last random number. Because of the VDF, the last leader won’t be able to know the actual final randomness before pRnd is committed to the blockchain. By the time Rnd is computed with the VDF, pRnd is already committed in a previous block so the leader cannot manipulate it anymore. Therefore, the most a malicious leader can do is to either blindly commit the randomness pRnd, or stall the protocol by not committing pRnd. The former is the same as the honest behavior. The latter won’t cause much damage as the timeout mechanism in FBFT will be triggered to switch the leader.

Where do I get Harmony One?

Check Coinmarketcap Markets for a list of Exchanges trading Harmony One. You may also want to get them via Defi DApps.

What Wallets accept Harmony One?

Check for a list of Harmony One wallets.

What DApps work with Harmony One?

Check for a list of decentralized applications running on Harmony One.

What is Staking?

For those wishing to participate in staking without running a validator, delegation is the best approach to still get involved and earn block rewards. The act of delegating tokens and earn rewards is called staking.

Harmony ONE holders can delegate their tokens to existing validators using our staking explorer: . If the tokens are delegated to an elected validator, a portion of the block reward earned by the validator will be credited to the delegator (according to section ).

The earned block rewards are stored in a separate reward balance of the delegator, which can be immediately withdrawn to the delegator’s account balance. The block rewards can also be staked again to achieve the compounding effect of staking.

Your delegated tokens are also associated with slashing risks of the validator. As a delegator, you should carefully choose validators based on their historical performance metrics such as APR, uptime and commission. In case of indifference or indecisiveness, you should distribute your delegations among multiple validators in order to minimize risk.

How to Stake?

New Delegators Quick, Simple Walkthrough:

💻 Download the ONEwallet extension from

✍️ Using the new extension create a new wallet or recover an existing one using seed words.

🎯 Next head over to the

👀 Choose a validator (or a few)

💰 Stake your tokens

🤑 Earn block rewards every 2 seconds.

Happen to be a more visual learner? Be sure to like and subscribe if you find the video(s) helpful.

For a deeper understanding of the staking mechanism, please refer to under the Validators section.

More Questions?

For more questions, check our section.

Metamask can be used along with ledger to perform transfers.

Steps:

Harmony blockchain is sharded in three dimensions: state, network and transaction.

State Sharding

In Harmony, each shard maintains it's own chain of blocks and state database. Therefore, the validators of each shard only need to store 1/N of the global state, where N is the number of shards. The consistency between states from different shards are guaranteed by the property of eventual atomicity of cross-shard transactions, which guarantees that double spending between shards can not happen.

Network Sharding

Harmony's validator network is also divided into shards where each shard involves a separate set of validators connected closely with each other and running consensus between themselves. Most of the time, validators communicate with other validators within the same shard to reach consensus or synchronize blocks. In cases of cross-shard transactions and beacon chain synchronization, validators from different shards send messages across shards through the globally connected network.

Transaction Sharding

Transactions in Harmony blockchain are sent to and processed by a specific shard instead of all shards. This way, shards can process transactions in parallel which greatly improves the overall transaction processing capacity of the blockchain. Users need to specify a field named shard_id in the signed transaction which indicates which shard this transaction belongs to. For cross-shard transactions, another field named to_shard_idis needed to indicate the destination shard while the shard_id field indicates the source shard.

Epochs

An epoch in Harmony blockchain is a pre-determined period of time when the validator committees of shards stay unchanged. In Harmony mainnet, one epoch is 32768 blocks which translates to around 18.2 hours. In Harmony testnet, one epoch is 8192 blocks which is around 4.6 hours.

When one epoch ends, the election for the new validator committees will be conducted in beacon chain and the result (i.e. shard state) will be written in the last block of the epoch in the beacon chain. After that, beacon chain enters the new epoch with the new validator committee producing blocks. Once beacon chain enters new epoch, all the other shards will follow and also enters the new epoch. The new shard state from the beacon chain will be written in the new block of the shards which also marks the last block of the epoch for that shard.

Crosslinks

Crosslink is an important piece of data which is sent from shard chains and stored in beacon chain. A crosslink contains data for block signatures and the block identifier data such as block hash, block number, view id and epoch etc. When a new block is confirmed in a shard chain, the corresponding crosslink will be created and sent to the beacon chain. Upon the receipt of the crosslink, the beacon chain verifies its signature and checks that it’s from the canonical chain of the shard. Successfully verified crosslinks will be added in the new block of the beacon chain to permanently endorse the block of the shard chain as canonical. Shard chain blocks without corresponding crosslinks endorsed in the beacon chain won’t be recognized by the network and will be deemed as invalid blocks.

Besides serving the purpose of marking canonical blocks of the shard chains, crosslinks are also used to record and tally the signing activity of the shard chain validators. Since epoch transition and EPoS election happens only on beacon chain, the validator signing activity from shard chains are sent to the beacon chain via the crosslink so it can be used for block reward calculation and uptime calculation which affect the validator’s election status.

Trezor wallet can be used along with Metamask to perform ONE transfers on Harmony network. Follow the steps below.

Note that, load the Ethereum firmware (or app) for signing the transactions on the trezor device. Currently, Harmony does not have a separate trezor firware. There is a for adding Harmony to trezor firmware. After this bounty is finished, the users will be able to both transfer ONE and perform staking using trezor using Harmony firmware (or app).

To send ONE tokens to an address, click the "Transfer funds" button and the send window will pop-up.

Input the amount of tokens to send and the destination address, then click the "next" buttons.

Click the "Confirm and Sign" button to sign the transaction.

Check your ledger Nano S, the LED display on Nano S is shown as below. Click on the right button to review transaction on Ledger.

Check and confirm the destination address is correct.

Check and confirm the amount is correct.

Currently, staking dashboard only supports transaction on shard0.

Click the right button to start signing the transaction:

Once transaction is signed, Send window will pop-up on the staking dashboard and display the transaction status.

It will display "Successful Send" once the transactions completes.

Download & Setup HMY

To interact with your Ledger device using the HMYC CLI, please click here to download and configure it first.

Interacting with Ledger

With that in mind, you can run any other command via HMY CLI using your Ledger.

Below, are a few practical examples on how to interact with your Ledger device.

1. Displaying your Address

For example, if you want to show your Ledger address you would simply run:

Using the Binary:

Using the Shell Wrapper:

2. Displaying your Balance

Using the Binary:

Using the Shell Wrapper:

3. Sending Transactions

Using the Binary:

Using the Shell Script:

For a complete reference of all commands available, please check the HMY CLI .

You can find your token from your final step transaction if it’s correctly displayed (sometimes there are delays in data representation).There is a token symbol near the amount in “Tokens transferred”/ ”Token transfers” section that leads to the token page.

You can also look for the token in a token list on your wallet address page in the target chain explorer (it also can take some time for a token to appear).

Click on the token symbol, and you’ll see all necessary token information.


Don’t forget, that address should be in ETH style (starting 0x...). For Harmony Explorer, there is a switcher in the top right corner.

If you can’t find your token there, please use to find a token address you should have after the bridge.

After you find your token, add it to your wallet as shown You can avoid this process if you use Add token to Metamask button on the bottom your bridge operation page after operation is completed:

Check that you add token to a receiver wallet of your operation and the wallet is connected to the correct network.

Fast Byzantine Fault Tolerance (FBFT)

The consensus algorithm is a key component of any blockchain. It determines the security and performance of a blockchain and is often referred to as the "engine" of a blockchain. Harmony’s consensus algorithm is called Fast Byzantine Fault Tolerance (FBFT), which is an innovative upgrade on the famous PBFT algorithm. FBFT is one order of magnitude faster and more scalable than PBFT because BLS (Boneh–Lynn–Shacham) aggregate signature is used to significantly reduce the communication cost. Specifically, FBFT allows at least 250 validators to reach consensus within 2 seconds.

For every round of consensus in FBFT, one validator serves as the “leader” and there are three phases: the announce phase, the prepare phase and the commit phase. In the announce phase, the leader proposes a new block and broadcasts the block hash to all of the validators. In the prepare phase, validators verify the message and sign on the block hash, as well as sending the signature back to the leader. The prepare phase finishes when signatures with more than 2/3 of the voting power are collected. After that, the leader aggregated the collected signatures into a O(1)-sized BLS aggregate signature and then broadcast it with the whole block to start the commit phase. The commit phase involves validators verifying the block and doing a similar signing process as the prepare phase (i.e. 2/3 voting power collection). The consensus is reached after the commit phase is done. This whole process can be done within 2 seconds in mainnet.

Specifically, Harmony’s FBFT consensus involves the following steps:

1. The leader constructs the new block and broadcasts the block hash to all validators. This is called the “announce” phase.

2. The validators check the validity of the message, sign the block hash with a BLS signature, and send the signature back to the leader.

3. The leader waits for valid signatures with more than 2/3 voting power from validators (including the leader itself) and aggregates them into a BLS aggregate signature. Then the leader broadcasts the new block and the aggregated signature along with a bitmap indicating which validators have signed. Together with Step 2, this concludes the “prepare” phase.

Synchronous View Change

One of the drawbacks of BFT-based consensus is the potential stallment of the consensus if the leader is malicious. The solution to this in PBFT algorithm is the additional view change protocol on top of the consensus which is able to switch leaders when the consensus is stalled. The view change in PBFT works well in the traditional distributed system setting but it fails in the more complicated blockchain space. Particularly, the view change in PBFT is relying on the timeout mechanism where the timer is triggered based on the live progress of the consensus. This works fine if the nodes are always online and are in sync with the consensus progress. However, this won’t be true in the real world situation where nodes can be down for extended time or restarted due to machine crash, which will make the nodes having inconsistent view IDs and not able to make progress in the view change.

We solve this problem by using an improved version of the view change protocol that’s fully synchronous based on the local clock rather than assuming the liveness of the nodes. Specifically, instead of setting the validator’s view ID based on the live progress of the consensus, the view ID is calculated based on the elapsed time of the last successfully committed block’s timestamp. Of course, there is no global clock to rely on in the calculation of elapsed time. Each validator will use their own local clock for that. However, this is totally fine as long as more than 2/3 of the validators maintain a relatively accurate local clock that’s not drifting by a few seconds. This is achievable in the protocol to make validators to periodically synchronize its local clock with NTP time.

This improvement makes our view change protocol fully robust and functional as long as more than 2/3 of the honest validators are online, guaranteeing the liveness of the FBFT consensus. Besides, BLS aggregate signatures are also used in the view change protocol to reduce network communication cost, making it a very efficient process which takes a few seconds to finish.

‌Harmony is a fast and secure blockchain for decentralized applications. Our production mainnet supports 4 shards of 1000 nodes, producing blocks in 2 seconds with finality.

Our Effective Proof-of-Stake (EPoS) reduces centralization while supporting stake delegation, reward compounding and double-sign slashing.

Harmony aims to build an open network of nodes operated and governed by a large community. This node community is called Pangaea.

Are we decentralized yet? There’s no consensus without participation. There are now 1,000 Harmony nodes – so far 800 of them run by the community – in line with thousands of Bitcoin and Ethereum nodes. Pangaea consists of volunteers and validators from more than 100 countries and most of them have never run a node before.

Key Innovations

Fully Scalable Architecture

Harmony’s sharding works not only on the network communication and transaction validation, but also on the blockchain state. This makes Harmony fully scalable on all three aspects of the blockchain: network, storage and transaction processing.

Secure Random Sharding

Harmony’s sharding process is provably secure against shard attacks because the network validators are randomly assigned and shuffled among shards. The randomness used in the sharding is obtained with a distributed randomness generation algorithm (based on VRF and VDF) which is unpredictable, un-biased, verifiable and scalable. Harmony reshards the network in a non-interruptive manner using “Cuckoo Rule” to prevent against slowly adaptive byzantine adversaries.

Efficient and Fast Consensus

Harmony’s consensus algorithm is called Fast Byzantine Fault Tolerance or FBFT. FBFT is a highly efficient and speedy consensus algorithm built upon the famous PBFT (Practical Byzantine Fault Tolerance) algorithm which is the cornerstone for distributed systems and consensus research for the past 30 years. Harmony’s FBFT is able to confirm blocks within 2 seconds thanks to the adoption of aggregated BLS (Boneh–Lynn–Shacham) signature. FBFT is also highly optimized in network message processing and block proposal pipelining so that the consensus can scale to hundreds of validators at the same time.

Effective Proof-of-Stake

Unlike traditional blockchains which require PoW (Proof of Work) to reach consensus, Harmony is a Proof-of-Stake blockchain which is energy efficient and low-cost for node runners. The process to elect validators is called Effective Proof-of-Stake (EPoS) which is the first sharding-focused PoS mechanism that prevents stake centralization. In EPoS, validators with a large amount of staked tokens are obligated to run more nodes to support the network while validators with less stake run fewer nodes. Besides, EPoS is able to randomly and evenly distribute the stakes among all shards so no shard is less secure than other shards.

Scalable Networking Infrastructure

Harmony’s network layer is based on the industry-leading p2p protocol named libp2p. We use libp2p’s gossip protocol for network message broadcasting and stream protocol for decentralized state synchronization. To achieve high performance, we adopt RaptorQ fountain code and use Adaptive Information Dispersal Algorithm to quickly and efficiently broadcast large blocks. Harmony also features a design where Kademlia routing is used to achieve cross-shard transactions that scale logarithmically with the number of shards.

Asynchronous Cross-Shard Transactions

Harmony supports cross-shard transactions to achieve composability of assets between shards. We designed a receipt-based asynchronous cross-shard communication mechanism which achieves eventual consistency so no double-spending is possible between shards.

Fun Facts

Why is the project called “Harmony”?

Harmony is the beautiful music when we sing in different notes but resonate. It’s analogous to our high-performance protocol of multiple shards but reaching consensus.

Why is the token called “ONE”?

Harmony’s vision is “For One and For All,” creating open consensus for 10 billion people.

Why is the logo designed as such?

Harmony’s community is built on “Handshake & Embrace.” All Is Fair in Love and War. (Euphues [Euphuism]: The Anatomy of Wit, 1579). Read the “ Interview” on our founding story.

Harmony is one of the first production mainnets to feature a fully sharded PoS architecture. Across the 4 shards in Harmony mainnet, blocks are produced every 2 seconds and cross-shard transactions are finalized in 2 block times.

Harmony’s Effective Proof-of-Stake (EPoS) is the first staking mechanism in a sharded blockchain that achieves both security and decentralization. EPoS allows staking from hundreds of validators and the unique effective stake mechanism reduces the tendency of stake centralization. Meanwhile, stake delegation, reward compounding, double-sign slashing, and unavailability checking are also supported.

Our token economics model incentivizes early stakers with higher rewards to bootstrap the network successfully. For those validators or delegators who would like to join , this guide will help you get started and learn about how everything works.

SafePal Hardware Wallet

SafePal is a secure and user-friendly hardware wallet designed for the masses. SafePal S1, its first flagship hardware wallet, adopts multiple layers of security schemes and intuitive user interfaces, enabling users to store, transfer and trade coins in the wallet in the easiest way.

Create New Wallet

Click to install the MetaMask extension on your browser. It can be installed on most desktop browsers. Just click on the installation button to begin the process. Once installed, continue to the next section to add the Harmony network to your new wallet.

In order to create a new account, click on the icon on top as shown by the image below and then on Create Account:

On next window, provide an account name and then click the Create button to complete the step.

is a browser extension and a mobile wallet for holding and transacting cryptocurrency.

Staking4All wallet is a desktop wallet for Harmony. You can download it .

Stake and exchange Harmony ONE tokens using Guarda Wallet. You can download the mobile wallet here.

MetaMask is an extension for accessing Harmony enabled distributed applications, or "dapps", from your browser. The extension injects the Harmony web3 API into every website's javascript context, so that Web3 applications can read from the blockchain.

In this section, we walk through the process of installing MetaMask, configuring it on the Harmony network, and importing an existing account using a previously generated private key.

Manage your Harmony, Ethereum, HRC20, HRC721, ERC20 & ERC721 Tokens in a trustless manner.

You can download Blits Wallet here.

1. What does Expires In mean?

1wallets have an expiration date. It means that once the expiration date is reached, all your funds will be automatically sent to the recovery address you set.

2. What does Daily Limit mean?

The daily limit for 1wallet is set to 1000 ONE's. This means you cannot transfer more than this amount daily.

Cobo is the first leading wallet company in the world to offer Staking and masternode rewards on user holdings, making it easy for users to grow their digital assets effortlessly. As a company, they emphasize long-term security, reliability, and convenience.

You can download Cobo Wallet here.

1. Head over to layerzero.bridge.harmony.one

2. Choose transfer direction

3. Connect your Metamask account via Metamask button

On wallet connection destination address is chosen automatically. You can specify another address on which you would like to receive your tokens.

4. Select a token from the list. You can use the search field.

When selected, token addresses for both networks will appear on the page. Note that token you receive never have the same address in destination network. You can check what token you get by following its address link. Please check if it's a desired token, and it has a liquidity in the target network.

5. Enter the amount.

When all fields are correctly filled in click on Continue to perform the bridge action.

6. You'll see the notice. Please read it carefully.

7. Read the message with fees very carefully on the next page. If you agree, click on Confirm.

8. The bridge action will begin, and you will be asked multiple times to sign transactions using Metamask. Just click on Confirm for every action

There are several steps in the bridge operation. Normally, it takes up to 20 min to finish the operation step.

When the transaction is over, its hash appear on the corresponding step. You can follow the link for transaction details.

9. If all went well, we have a successful bridge action.

10. In order to see the tokens you might need to add the tokens to your wallet. There is a special button for it in the interface. You need to confirm adding in Metamask notification window.

Alternately, you can use for adding tokens.

Description: "ONTO is the first truly decentralized, cross-chain wallet, allowing users to securely manage their identities, data, and digital assets. Wallet users can manage their crypto assets (including NFTs), perform cross-chain swaps, keep up-to-date with the blockchain and crypto industry’s latest developments and events via the ONTO news feed, and enjoy a variety of dApps."

For more information: https://onto.app/

Description: "The ultimate gateway to decentralized finance in a user-friendly, multi-currency and convenient cryptocurrency wallet for all your needs."

For more information: https://infinitywallet.io/mobile

Download SafePal Mobile Apps

SafePal mobile apps can be downloaded from PlayStore and AppStore following the instructions here.

Quick Start

Please make sure your SafePal is the latest by following the instructions . The SafePal general user's manual is and the initial set up guide is .

Description: "Trustee Wallet is the altcoins & Bitcoin wallet app for secure storage, profitable purchase of cryptocurrencies and tokens using bank cards."

For more information: https://trusteeglobal.com/

Get JSON output of balances on all shards of a given ONE address with the balances subcommand:

Using the Binary:

./hmy balances <ONE-address> --node="<endpoint-address>"

Using the Shell Wrapper:

Example:

1ONE/WETH pool: https://analytics.sushi.com/pairs/0x986627db5e4aae987f580feb63d475992e5ac0ae

1ONE token: https://etherscan.io/address/0xd5cd84d6f044abe314ee7e414d37cae8773ef9d3

Description: Stake and exchange Harmony ONE tokens using Guarda Wallet. Stake, exchange, earn and buy Harmony, Bitcoin, Ethereum and thousands of other assets.

For more information: https://guarda.com/

Generate Markdown Documentation

if you want a full list of commands the hmy tool knows in markdown format, please run the following command:

./hmy docs

Then in the same directory, hmy creates a directory named hmy-docs in which you can find all markdown files for the commands and subcommands.

Delete Account

Deletion of a one account is possible by issuing the below command

Use to find a token address you should have after the bridge.

Here you can specify the network by pressing its button. If your token is on Binance or Ethereum, it can help you to avoid confusion. You can also set a filter by a token type if you know it.

Search a token you plan to bridge. You can enter its address / symbol / name.

Click on the paired token address, and it will lead you to the token page.

There are tokens named the same in the different networks, but they always have different addresses. Compare token address and name to your token data to avoid a confusion.

How to send ONE in SafePal？

1. Click on the 'Send' segment in SafePal App menu bar and select ONE.

With your ONE staked to one or more validators, your delegation begins earning rewards with each block. You may collect these rewards at any time and may be re-delegated to compound your interest assuming you have 100 or more ONE.

Visit the staking dashboard at staking.harmony.one and click the Portfolio link on the left.

Log into the dashboard if you're not already signed in.

With your address confirmed, proceed by clicking the Claim Rewards button to collect the ONE earned through staking.

Note the staking dashboard currently only displays whole integers, which means <1 ONE rewards will display as zero and cannot be collected.

Make sure you've set up your Math Wallet extension according to the directions in .

Opening Web Wallet

You will need to open Web Wallet in order to view account details and perform transactions.

Stake and exchange Harmony ONE tokens using Guarda Wallet. You can download the desktop wallet .

Harmony Smart Defi Wallet

Send. Swap. Connect. | Available at https://sefwallet.one

Sef Wallet is a smart DeFi wallet built for Harmony blockchain. Always low fees, and fast transaction time.

Adding a Custom Token

Open MetaMask, select the Harmony network, then click the Assets tab. Near the bottom, click "Import Tokens" and complete the empty fields.

Add the Token Contract Address, Token Symbol, and the Decimals value. Note the Token Symbol and Decimals may auto-populate. These details are usually provided by the token creator.

Frontier is a chain-agnostic DeFi aggregation layer. Users can stake in Harmony using Frontier.

Please visit with your mobile device to download the harmony mobile app.

Introduction

hmy is the official Command Line Interface (CLI) provided by Harmony. You can use it as a local wallet and as a way to interact with your Ledger Nano device. The hmy CLI is completely open-source. You can track its development and post any issues encountered and your feature suggestions .

For a full list of DeFi Protocols on Harmony, visit

A fully decentralized protocol for automated liquidity provision.

Delegating to a Validator

You can delegate tokens to a validator using the following command:

The CLI will ask for the passphrase for the delegator-addr keystore file.

--delegator-addr

In the updated economic model of our network, the total reward across the network (issuance plus transaction fees) will remain constant regardless of average block time and staking ratio. The goal of this change is to achieve a higher staking ratio, to simplify the model and to create a path to 0 issuance, all of which we believe will bring long term benefits for Harmony.

ONE Token

ONE is the native token for Harmony which supports the monetary flow of the entire Harmony economic system. ONE has 18 decimals.

The smallest unit of ONE is called Atto, which is 0.000000000000000001 ONE. (equivalent to Wei in Ethereum).

Transaction Finality

Block finality refers to the concept that a proposed block is finalized by the blockchain and can not be reverted or the cost of reversion is prohibitively high. Block finality is usually measured by how long it takes for the newly proposed blocks to be finalized. For example, in Ethereum, it takes more than 6 blocks or 1 minute to have reasonable confidence that the block is finalized and can not be reverted.

Thanks to the nature of Harmony‘s FBFT consensus, blocks can be finalized as long as the 2/3 majority quorum is reached on the block. On Harmony mainnet, it now takes 2 seconds to finalize a newly proposed block and the transactions inside. Read more about our 2-second finality here:

Transaction Fees

Harmony follows the same transaction fee model as Ethereum where users pay a certain amount of tokens to get their transactions processed and included in the blockchain. Since Harmony is fully EVM-compatible, users can translate directly the fee model from Ethereum and apply to Harmony. For example, a normal token transfer transaction cost 21000 gas. The gas price can be as low as 0.0000001 ONE (or 100 Gwei as in Ether) since Harmony have high TPS and the network is highly efficient and rarely clogged. This means a normal transfer cost only about 0.0021 ONE. In General, transactions in Harmony network cost around $0.00003 gas fee.

The reason for Harmony to be able to afford such low fee is twofold. First, Harmony is Proof-of-Stake chain where the cost of running a node is much cheaper than PoW chains as no wasteful computation is needed. Second, Harmony is a highly scalable blockchain which currently provide thousands of transactions per seconds as throughput. This means users don't need to bid with high fee to get their transaction processed in time. We expect the low fee situation will stay as long as Harmony network is not fully utilized and even if that happens, we can solve the problem by extending the network with more shards to provide more transaction processing power.

Cross-Shard Smart Contract Transaction

The latest design is documented here: . The following design is deprecated.

We will adopt the asynchronous cross-shard communication model just like we did for cross-shard ONE token transfer. Meaning any smart contract which needs to call another smart contract from another shard will have the sender contract transaction finalized first at initiating shard, then a receipt will be created including the call data, and finally the receipt will be sent and processed at the destination shard.

A new Opcode “CALL2” will be added to the virtual machine which is used for a cross-shard smart contract call.

CALL2’s input is similar to CALL but with an another shardID parameter:

Unlike CALL which actually executes the contract code within the same shard, CALL2 won’t run any code but only lead to the creation of a receipt after the transaction is successfully confirmed in this block. The receipt structure can be like this:

Specifically:

• TxHash: the transaction hash of the original transaction sent from the real user

• Sender: the address of the transaction sender

• From: the address of the caller smart contract which initiated the cross-shard call

Once the corresponding block of the receipt is finalized, a proof data for the receipt will also be generated. This is exactly the same as cross-shard ONE token transfer:

Once the receipt and proof are obtained, they will be sent from source shard to destination shard (CXReceipt.ToShardID) for processing.

The destination shard process the cross-shard smart contract receipt by:

1. Verify the receipt is valid using the proof data

2. Use the CXReceipt.To as the callee smart contract address and CXReceipt.Input data as the contract call data for contract execution. CXReceipt.Amount and CXReceipt.Gas are also used the same way as normal contract calls.

3. If this contract call produces additional cross-shard contract calls. Additional receipts will be generated and the same cross-shard call process will happen.

Design Questions:

1. What if the callee contract doesn’t exist in the destination shard?

   1. We could simply abort the cross-shard call but credit the gas to the destination shard. This way, we don’t need another cross-shard receipt to go back to the source shard to credit the gas.

   2. Or we could create a brand new contract. This requires the receipts include the contract bytecode which can be user specified or the same as the caller contract’s code (in case of HRC20 contract replication across shards)

• Demo on Harmony Mainnet

• Harmony's Wallet Strategy

• Tweets on Updates and News

Project Summary

⚡ WHY: can earn 10% or more annual returns with crypto assets. But they must stop worrying about seed phrases, device loss, email phishing, phone hijacking... We everyone’s financial future against password breaches, software bugs, platform malware and .

👩‍👩‍👧‍👦 WHOM: Global consumers with just a few thousand dollars and no technical background.

💎 WHAT: A digital wallet for crypto assets, investment and identity. Consumers can buy crypto assets , then trade between multiple platforms. They can earn fixed-rate interests or actively invest for higher returns. can hold or .

🤯 MAGIC

• Earn for the first million users.

• No emails, SMS, passwords or government documents necessary.

• Seamless between assets from Bitcoin, Ethereum or .

🔨 HOW

• Many offer 10% yields, offer 10%, and offer 20%.

• Assets and keys are secured on blockchain; and .

• Harmony supports non-custodial and trustless transactions in 2 seconds and at less than $0.01 fees.

💪 WHO: Ph.D.s, , formal verification as security audit, , billion user products.

🔥 WHERE: The Future of Money is already here but unevenly distributed. Decades of cryptography, in production.

🚀 WHEN: Product launch in 2021 Q3 with 1000 users, then 10k users in Q4 with each wallet holding $1000. A prototype with minimal features on mainnet in July.

💡 Terms

• : friends or other devices unlock funds for you if you lose access to your wallet.

• Non-custodial: no network, software, developers, government or even Harmony control your fund.

Join us at , and .

Security Goals

ONE Wallet is designed with these goals in mind for security:

Social (people)

• Resilient. Funds are recoverable through time locks and multiple safety nets. No single point of failure such as thefts, cracks, loss, censorship or coercions is catastrophic.

• Sufficient. All steps are well defined without delegating to hardware devices or seed phrases in safety boxes. Users do not need any passwords or rely on biometrics.

• Anonymous. An account is a fresh cryptographic hash, not tied to existing systems or real-world identity. Derived paths support multiple public keys to protect privacy.

Smart (code)

• Composable. One-time or low-entropy passwords are useful for small funds. Multiple authentications can independently boost protection thresholds against brute-force.

• On-chain. A decentralized network with high stakes and fast finality validates all transactions. Its platform has sustainable incentives and open governance to evolve.

• Programmable. Operations can call third-party contracts, store history of states, or upgrade its code. Complex applications may use oracles of time, locations and events.

Hard (math)

• Self-Sovereign. No third parties, government documents, designated guardians, backup servers or hardware enclaves are necessary. Users have full custody and self control.

• Air-Gapped. Key-loggers and man-in-the-middle attacks are minimized. The full parameters of transactions are easy to verify and approve without cables or cameras.

• Verified. Trusted are only open source and hardened cryptography. Formal verification, through logical frameworks, assures end-to-end security beyond tests and audits.

Tradeoffs

There may be conflicts, tradeoffs or impracticality of the goals above. Here's our rule of thumb:

1. Toward validating our innovation with 10k users (each with $100 assets), focus on these three goals: sufficient, resilient and composable.

2. Toward adopting our product with 1m users (each with $1k assets), differentiate with these three goals: on-chain, self-sovereign and air-gapped

Visit the staking dashboard at https://staking.harmony.one/ and click Sign In.

The screen will prompt you to make a selection.

Choose "Use an Existing Address".

Click "Use Math Wallet" from the next selection of options and then click "Sign In".

Sign in to your Math Wallet browser extension. You will see a Login Request pop up. Select your wallet and then click Accept.

You will be brought back to the Validator page of Staking Dashboard. You will be able to see your address on the top left corner under the Harmony logo which means you are now signed in to your account.

Locate and click on your preferred validator from the list.

The validator profile page will open. Click on the Delegate button.

Option #1: Enter the desired amount of tokens you would like to delegate and click next or...

Option #2: Use the slider to determine the percentage of your ONE you wish to stake.

Click Next and then click Confirm and Sign.

Click Accept to confirm the signature request on the Math Wallet pop-up window and wait a few seconds. If the transaction completes, you will find a success confirmation pop-up on your screen.

You are now staking your ONE with a validator and will begin earning rewards at the start of the following epoch.

Click the Portfolio link on the left to view your stake amount, rewards accumulated, and a list of any validator to whom you have delegated your coins.

Retrieving the 0x Equivalent Address

• For mainnet, go to (Mainnet). For testnet, go to .

• Search for your one1 address at the top.

• At top of the screen, toggle the address format from ONE to ETH.

• Copy the 0x address format by clicking on the small icon right to the address

You now have the 0x address which corresponds to your one1 address.

Sending a Regular Transaction

To send a transaction on MetaMask, click on Send button and on next window paste the destination address starting with 0x, fill the amount you want to send, click on Next, and then click on continue.

Receiving a Regular Transaction

In order to receive a transaction, simply share the 0x address format with the sender.

Average setup time is 3-5 minutes:

1. Download Metamask Mobile App from Apple App Store

2. Click on Get Started

3. Select Create a new wallet

4. Scroll and select No thanks for Metamask data

5. Create Password and select Face ID (MetaMask cannot recover your password, write this down in a safe place, DO NOT TAKE A SCREENSHOT)

6. Allow Face ID

7. Secure Wallet (*even more important than password, should never be shared with anyone, even MetaMask)

8. Review Metamask Tips (store phrase in a secure location)

9. Make sure no one is watching before revealing phrase, click View

10. Write your Secret Recovery Phrase in a safe place

11. Choose to enable automatic security checks (we recommend that you enable this)

12. You’re all set! Now

13. Now that you have , let’s get you ready for ONE 🎉

14. Click Wallet at the top of the screen

15. Click Add Network

16. Select Add for Harmony Mainnet Shard 0

17. Approve (make sure the information is the same)

18. Switch to Network

19. To Get ONE you’ll need your ONE address

20. With Metamask open make sure the Wallet is on Harmony Mainnet Shard 0

21. Click your address on the top of the page to copy it

22. Once the address is copied, select ONE

23. Select the three dots on the top right and View on block explorer

24. Paste in Search

25. Your ONE address will automatically load

26. Select the copy icon to copy the address

(For additional iPhone security measures, follow this )

Installation

1. Access the Google Chrome web store and install the Math Wallet extension.

1. Open the extension in your browser and create new password.

1. Select Harmony from the list of networks.

Visit and sign into the staking dashboard at https://staking.harmony.one/, if you are signed out.

Click on the Portfolio link to the left.

This page will display information about your staked ONE including a list of validators to which you've delegated your ONE, amount of staked ONE, and unclaimed rewards.

You can undelegate from one or more validators where your ONE is staked.

From the Portfolio view, select the validator(s) from which you wish to undelegate by clicking on their validator name. This brings up the validator profile page.

Click the Undelegate button.

You will be prompted to specify how much you wish to undelegate from the validator. From here, specify an amount you wish to undelegate or click Set Max to undelegate all ONE from the validator.

Click Next and then click Confirm and Sign. This will open a window for Math Wallet.

Click the Accept button to sign your undelegation / unstaking transaction.

You should see a notification for your successful undelegation.

Your ONE is now undelegated from the validator. You may have more ONE staked with other validators. To undelegate fully, repeat these steps again through the list of validators on your Portfolio page.

You can choose to create a wallet through the extension or import your existing wallet using a mnemonic phrase or a private key.

When you create a wallet, please write down your mnemonic correctly and keep in a safe place.

You may also import your Harmony Account using your mnemonic or private key.

You can also choose to export your keys in Settings. Your keys will be exported into a txt file with both private key and mnemonic.

balajis.com @balajis · Jun 11 Replying to @matthew_d_green Yes. But here’s a possibly dumb workaround:

1) A listens for events on chain 2) B sends a decryption request for resource to A’s address 3) A returns decrypted version, re-encrypted with B’s public key, if in a valid time window

Sort of like multisig with restrictions?

stephen tse | s.one @stse · Jul 3 smartotp by @IHomoliak has a research paper & a prototype - with a wallet for private keys

"keyless wallet" by @dionyziz has a theoretical result assuming witness encryption

our @1wallet_ by @polymorpher has a mainnet demo with hardened client security

nick.eth @nicksdjohnson · Jun 11 Replying to @AutismCapital 2FA only works when you have a central service that controls access to your data. The wallet equivalent of 2FA is a hardware wallet.

stephen tse | s.one @stse · Jul 4 why can't public and decentralized platforms do 2fa services?

Pedro Gomes 🦇🔊📲 @pedrouid · Feb 13 Replying to @zmanian I think it’s also due to user demand

A pure wallet would essentially just display different signing authorization screens without a specific use-case

Cryptocurrency wallets on the other hand transfer funds, show balances, etc

stephen tse | s.one @stse · Jul 4 how about separating wallets from authenticator? with one-time-password (otp) like google auth

About Timeless

Timeless is reimagining the role of the calendar in our daily lives. They provide a delightful user interface, enabling users to seamlessly network their events with others via our Web RSVP pages. Instead of serving as a reminder for certain tasks, They are building out the discovery of services that will grow a marketplace in our calendar, intuitively helping users conquer the day. Timeless is driven to help users make the best use of their time, doing what matters, with the people they care about.

Shared Cultural Experiences

Timeless and Harmony can tokenize unique events and experiences on merging NFTs with some of the biggest events of the summer, from live concerts, sporting events, and many shared cultural experiences.

Non-Fungibility of Time

While we have the same amount of time in a day, how we spend our time is what gives meaning & value to each life’s moment. So, Timeless is creating bespoke 3D art to accompany life-enriching experiences.

Web RSVP

Timeless will streamline the onboarding process for NFT Moment auctions, deploying Web RSVP. It is integrated with your calendar and enables fast & easy event participation.

1Wallet: 1wallet.crazy.one

Creating Your ONE Wallet

First, make sure to have Google Authenticator installed on your mobile device. Click on button Create and a QR Code similar to the image below will show up. Scan this QR Code using Google Authenticator app and type the random 6-digit code.

After inputing the 6-digit code you will be redirected to a new window. Fill the recovery address and click on Create Now.

If everything went alright you should see your wallet created:

Restoring Your ONE Wallet

Click on button Restore and paste your wallet address:

Follow the instructions on the next window:

Videos

DAO Ecosystems

Aragon: https://client.aragon.org/

DAOHaus: https://app.daohaus.club/ (coming soon to Harmony)

Governance Tools

(coming soon to Harmony)

Multisig Wallets

Gnosis Safe on Harmony

The Gnosis Safe is a smart contract wallet with multi-signature functionality at its core. Gnosis Safe Application on Harmony:

Installing using Ledger Live (RECOMMENDED)

Crypto.com

Buy ONE on Crypto.com with credit card, debit card and bank transfers.

A "Decentralized Autonomous Organization" is a mechanism for coordinating behavior and allocating resources. It has been called "an internet community with a shared piggybank" or "a bookclub with a bank account" but, regardless of the metaphor, DAOs represent a visionary approach to working that we believe will revolutionize the future of work.

As of August 1st, 2021, Harmony is working to "seed" and "kickstart" several DAOs in order to decentralize the management and effort in operating the Harmony Network. Through several experiments and trial runs, several key principles have risen to the surface as vital components of a truly decentralized DAO. Please note that, while these components are necessary for a DAO to receive a seed grant from the Harmony Foundation, they are not sufficient. Meaning: if you are forming a DAO that you would like to see supported by the Foundation - you MUST follow these principles. However, just because you follow these principles does not automatically mean that you will receive Foundation support.

Principle #1: The Mandate

The Harmony Foundation has found that a three-fold mandate is ideal for organizing a community. For example, the ONECommunityDAO has the mandate "Growth, Engagement, Diversity"

Why Finance? Blockchains enable many marketplaces but banking services are the native use.

Consensus protocols are creating new economies with tokens and trading. Smart contracts are serving as a platform for collectibles and gambling.

These early use cases are driven by the core value of blockchain: providing exchange and liquidity infrastructure for financial transactions. Harmony focuses on broader financial products as they are and ready for mass adoption.

Why Cross-Border? Open platforms work locally but global users are the most underserved.

Finance products within one country are already . On the other hand, purely on-chain #DeFi solutions without onramp gateways or local distribution have limited impact in real-word economies.

Check the validators page to see list of validators. Click on desired validator logo to check validator details.

Click on the "Delegate" button to delegate to this validator.

Enter the desired delegation amount or scroll the percentage slider in the pop-up Delegate window. Delegation must be at least 100 ONE. Click on "Next" and confirm the signature request.

Check your Ledger, it will display "Delegate Stake" in the LED screen. Press the right button to start signing the transaction.

Check the delegator address. Press the right button to show full address. If correct, press both left/right buttons to continue.

Check the validator address. If correct, press both left/right buttons to continue.

Check the delegation amount. If correct, press the right button to continue:

Press right button for Sign Stake confirmation.

The entire process is shown below:

Once transaction is signed, Delegate window will pop-up on the staking dashboard and display the transaction status.

Here is the list of failed transaction messages which can be checked by querying your transaction hash, checking the transaction hash on explorer or checking the blockchain pool transactions.

Here is how with the hmy cli :

./hmy failures plain --node="https://api.s0.t.hmny.io"

./hmy.sh -- failures plain --node="https://api.s0.t.hmny.io"

Go to https://github.com/polymorpher/one-wallet/releases/tag/v0.1-cli and download the file that is appropriate to your operating system (1wallet-linux, 1wallet-macos, or 1wallet-win.exe).

• I saved it in my downloads folder, but you can save it anywhere.

• Open your Terminal (I'm a Mac user), and run the following commands:

cd downloads

chmod +x ./1wallet

./1wallet

Now that you have installed your CLI 1Wallet, you can do several things including:

The first step is to scan the QR code.

Once you have done that, you can run the next command using the 6 digit authenticator code and a recovery address of your choice to create your 1Wallet.

You should see a screen like this on your Terminal (yes, do you like my Matrix themed Terminal?):

After that you can try to send a small amount of tokens to your newly created 1Wallet and in general test some of the other commands and functionalities.

Let us know if you find any issues:

Coinbase Rosetta API

Harmony has finished it’s initial integration with the Rosetta API specification — an open-source framework to simplify blockchain interactions.

So why did we choose Rosetta? Well, the biggest thing for us is that it allows for faster onboarding since it is a standard, chain agnostic, framework with sharding as a first-class citizen. Among other things, this greatly reduces interoperability friction between products spanning multiple chains. Moreover, Rosetta’s growing community and tooling were major factors as it means less effort from the Harmony team is needed to implement and, more importantly, maintain our Node API.

By partnering with Gitcoin, Harmony reaffirms its commitment to developers. Overall we’re excited to partner with Gitcoin in our shared goal of growing the web3 open-source ecosystem.

Magic (Fortmatic)

Magic is an SDK for developers to create passwordless and social and email logins. Magic makes dapps authentication and key management easy, like a web2 experience, and removes headaches for developers.

Chainlink

Chainlink’s decentralized oracle will be launching on Harmony. This integration will provide off-chain data resources via Chainlink oracles to users of Harmony, giving developers price feeds and other off-chain data to use in their applications. This move is critical, especially as Harmony draws more of its attention to DeFi applications and cross-border finance.

Band Protocol

Our integration with Band gives developers another option for accessing off-chain data on Harmony, a much greater selection of data formats and types, and different ways of interacting with off-chain data based on the developer’s preferences unlocked through Band Protocol’s custom oracle scripts.

Trust Wallet is a mobile cryptocurrency wallet. Please visit https://trustwallet.com with your mobile device to download the app. Users can stake in Harmony using Trust Wallet.

Incoming transactions

The funds that are sent within shard 0 will be viewed correctly in Trust Wallet.

If you receive funds in a shard other than shard 0 (i.e. in shard 2), you will not see the transaction receipt in the Trust Wallet app. Since your account balance will only show the funds in shard 0, your total balance will not change.

Outgoing transactions

Since there is no shard selection in the Trust Wallet UI, all transactions will originate from shard 0 and will be sent to shard 0.

For more details, please see these example cross-shard transactions using Trust Wallet:

What to do if you receive funds in a shard other than shard 0 when using Trust Wallet?

You will need to export the account in which you received the funds and import it to another wallet such as the CLI or Math Wallet.

Example Using Math Wallet:

1. Open Trust Wallet app

2. Click on "Settings" on the bottom right

3. Click on "Wallets"

Import/Export Wallet

Below are the official instructions on how to restore/import Recovery Phrase (mnemonic) on Trust wallet.

Adding Harmony to MetaMask

Open MetaMask and click the list of networks at the top, then select "Add Network".

Harmony is a fully Ethereum compatible blockchain ready to support all major NFT standards, including and .

Several NFT platforms and campaigns have been launched on Harmony. The Harmony community has launched recently a NFT marketplace, daVinci Marketplace, in April 2021. See our other NFT highlights below:

daVinci Marketplace

daVinci is a NFT marketplace that supports the creation, buying and selling of NFTs minted on Harmony. You may access the marketplace here:

Swap is a v3 Fork on Harmony. The decentralized exchange (DEX) gives users access to capital efficient liquidity pools.

Uniswap v2 required all users to provide liquidity across the entire price curve from 0 to infinity, Uniswap v3 allows Liquidity Providers (LPs) to optionally concentrate capital in the price range they believe will generate the highest return.

The easiest way to get detailed help is to use the cli itself. For example below is the cookbook which gives an overview of various commands.