We’ve updated our open-source Key Management System (KMS) to add support for more blockchains and make some improvements. 

We’ve added as possible values Bitcoin Cash, Litecoin, Dogecoin, Dash, Zcash to the Prepare A UTXO-Based Transaction From HD Wallet (xPub, yPub, zPub) endpoint that can be used with the KMS.

Ethereum Classic is now supported in the Prepare An Account-Based Transaction From HD Wallet (xPub, yPub, zPub) API.

We’ve also made some small improvements and added a MIT License (MIT) that outlines the permissions of use. 

If you’ve already implemented the KMS, you’ll need to upgrade the SDK to the latest version. Check it out on GitHub.

We’ve added two new blockchain-specific endpoints in our Wallet as a Service that can be used to stake and unfreeze TRX for bandwidth or energy on the TRON network. We’ve also made some changes and improvements to existing endpoints. See the details below: 

New TRON-specific endpoints:

• Freeze TRON for Energy Or Bandwidth - Through this endpoint, customers can stake (freeze) the balance of a specific TRX address to obtain bandwidth or energy. The minimum amount for staking is 1 TRX. The account receiving the bandwidth or energy must have an available TRX balance.
• Unfreeze TRON Energy Or Bandwidth - With this endpoint, customers can unfreeze already staked TRX to receive resources. When unstaking bandwidth or energy, the whole amount for that resource will be released to the specified receiver address. The request for unfreezing TRX can be done 3 days after the staking transaction.

Improvements to existing endpoints:

• Prepare A UTXO-Based Transaction From HD Wallet (xPub, yPub, zPub) - In this endpoint, the replaceable attribute has been made optional when creating a request. 
  
• Derive HD Wallet (xPub, yPub, zPub) Change Or Receiving Addresses - In this API we’ve added base58 as a possible value for addressFormat for TRON.
• Sync New HD Wallet: More blockchains have been added as possible values. Customers can now sync Bitcoin, Bitcoin Cash, Litecoin, Dogecoin, Dash, Ethereum, Zcash, Ethereum Classic, BNB Smart Chain and XRP. 
  

Stay tuned with our updates page to be the first one to learn what's new with Crypto APIs! 

We've added some new features and provided support for more blockchain protocols to existing API endpoints.

Here is what's new:

List Unspent Transaction Outputs By Address - we've added a new response attribute isAvailable. Through this endpoint customers can list their transactions' unspent outputs by address.

Prepare An Account-Based Transaction From HD Wallet (xPub, yPub, zPub) - we've added a new response attribute unit. Using this API endpoint users can prepare a transaction for signing from a synced with Crypto APIs address from the specific xPub. 

Derive And Sync New Change Addresses - we've expanded the support for more blockchains in this API and customers can now use it with Bitcoin Cash, Litecoin, Dash, Dogecoin and ZCash. 

Derive And Sync New Receiving Address - we've added more supported blockchains in this API endpoint and customers can now use it also with Bitcoin Cash, Litecoin, Dash, Dogecoin, ZCash, XRP, Tron and Ethereum Classic. 

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In our latest release we added support for the BNB Smart Chain (BSC) Mainnet in several of our products and API endpoints.

Crypto APIs customers can now query blockchain data and transact on the BSC Mainnet, set up webhooks for events on the blockchain, derive and sync HD wallets and more. 

Here is the full list with endpoints with added support for BSC Mainnet:

Wallet as a Service:

• Generate Deposit Address
• Create Coins Transaction Request from Address
• Create Coins Transaction From Address For Whole Amount
• Create Fungible Tokens Transaction Request from Address
• List Deposit Addresses
• List Supported Tokens
• Get Wallet Asset Details
• List Wallet Transactions
• Get Wallet Transaction Details By Transaction ID

Blockchain Data:

• Get Address Balance
• Get Last Mined Block
• List Latest Mined Blocks
• Get Fee Recommendations
• Get Next Available Nonce
• Get Token Details by Contract Address
• Derive And Sync New Receiving Addresses
• Prepare An Account-Based Transaction From HD Wallet (xPub, yPub, zPub)
• Sync New HD Wallet (xPub, yPub, zPub)
• List Synced Addresses
• List HD Wallet (xPub, yPub, zPub) Transactions
• Get HD Wallet (xPub, yPub, zPub) Assets
• Get HD Wallet (xPub, yPub, zPub) Details

Blockchain Events (Webhooks):

• New unconfirmed coins transactions
• New confirmed coins transactions
• New confirmed tokens transactions
• New confirmed tokens transactions and each confirmation
• New confirmed coins transactions and each confirmation
• Mined transaction
• New Block
• New confirmed internal transactions
• New confirmed internal transactions and each confirmation
• New Confirmed Coins Transactions For Specific Amount
• New Confirmed Token Transactions For Specific Amount
• New Confirmed Internal Transactions For Specific Amount
• Block Height Reached
• List Blockchain Events Subscriptions
• Delete Blockchain Event Subscription
• Get Address Details From Callback
• Get Transaction Details By Transaction ID From Callback
• Get Block Details By Block Hash From Callback
• Get Block Details By Block Height From Callback

Blockchain Tools:

• Validate Address
• Derive HD Wallet (xPub, yPub, zPub) Change Or Receiving Addresses
• Broadcast Locally Signed Transaction
• Estimate Gas Limit
• Estimate Token Gas Limit
• Decode Raw Transaction Hex

We continue working to provide BSC Mainnet support for more products and endpoints and launch new features and functionalities. Stay tuned!

The Crypto APIs Team

We are pleased to announce the launch of more new endpoints for interacting with blockchain protocols and getting notified for anything that happens on-chain.

Here is what’s new:

Wallet as a Service: Create New Master Wallet

Through this endpoint customers can easily create a new Master Wallet through the API. The user provides the desired Wallet name and in return the response includes the walletId. 

When creating a wallet, the customer can select whether to create a Testnet or Mainnet wallet. That new Wallet can be additionally also backed up through the Crypto APIs Dashboard. 

Improvement: XRP has been as a possible value to endpoint "Create Coins Transaction From Address for Whole Amount"

Blockchain Webhooks: New Reverted Block

We have released a new and improved version of our Open-source Key Management System (KMS). 

You can check it on our GitHub page. 

What’s new:

• The release includes better descriptions of endpoints and functions and better examples. 
• We have also removed redundant functionality related to blockchain events. 
• Bug fixes

We are doing performance improvements to our Dashcoin Mainnet node. You may experience some delays in callbacks, webhooks and automations.

The maintenance is expected to take 1 hour.

We appreciate your patience and understanding.

If you have any questions, please contact us at [email protected] 

We have upgraded our Ethereum nodes to the latest “Gray Glacier” fork in advance to make sure no issues are experienced with any of the Crypto APIs products.

The “Gray Glacier” network upgrade occurred at block 15,050,000 on June 30 with the goal to delay the network’s difficulty bomb, pushing it back by 700,000 blocks, or roughly 100 days.

The upgrade is an important part of the upcoming moving to ETH 2.0 Proof-of-Stake (PoS) when Ethereum’s execution layer will be merged with the Beacon Chain.