Broadcast Transactions

Broadcast transactions with real-time monitoring

Sign transactions locally and send them to the node through a specialized endpoint with our Broadcast Transaction service. Utilize webhooks for real-time monitoring and transaction verification. This the ideal solution for organizations and blockchain developers seeking efficient & secure transaction management.

Sign transactions locally
Transaction verification
Real-time monitoring
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One integration. Infinite possibilities

Get access to over 100+ endpoints using a single point of integration.

Broadcast Locally Signed Transaction
GET
Broadcast Locally Signed Transaction
GET
View Docs 
{
    "apiVersion": "12-12-2024",
    "requestId": "601c1710034ed6d407996b30",
    "context": "yourExampleString",
    "data": {
        "item": {
            "transactionId": "347d96855d41b77f1e23048fff11c18e9fe699ee69b0b402338f34189734e0a2"
        }
    }
}
View Docs

What we support

Mainnets and Testnets

Blockchains
BTC

Bitcoin
ETH

Ethereum
XRP

XRP Ledger
ETC

Ethereum Classic
BCH

Bitcoin Cash
DASH

Dash
LTC

Litecoin
DOGE

Dogecoin
ZEC

Zcash
BSC

BNB Smart Chain
TRX

TRON
+
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What are you up to?

Our powerful blockchain product suite helps businesses and institutions build the ecosystem of tomorrow.

View all use cases
Crypto Wallet
Hardware Wallet
Crypto Exchange
Crypto PSP
Digital Banks
Crypto Lending
Crypto Custody
Crypto Taxes & Accounting

Infrastructure optimized for growth

30+

Networks Supported

25ms

Avg Processing Time

25,000+ rq/s

Enterprise-ready

100+ TB

of Big Data

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Frequently Asked Questions

Broadcast Transactions

What is the CryptoAPIs Broadcast Transactions API and how does it work?

It lets you push a transaction you have already signed locally to the blockchain network through a single specialized endpoint. You keep your private keys on your side, sign the raw transaction offline, and CryptoAPIs relays the signed payload to a node for you. This means CryptoAPIs never handles your keys while still giving you node access for broadcasting.

Which blockchains does the Broadcast Transactions API support?

Broadcasting is available across 20+ blockchains. This covers EVM chains (Ethereum, Ethereum Classic, BNB Smart Chain, Polygon, Avalanche C-Chain, Tron, Arbitrum, Base, and Optimism), UTXO chains (Bitcoin, Bitcoin Cash, Litecoin, Dogecoin, Dash, and Zcash), plus XRP, Solana, and Kaspa.

Does the Broadcast Transactions API support Solana and Bitcoin?

Yes. Solana is supported for broadcasting locally signed transactions, as are Bitcoin and the other UTXO chains (Bitcoin Cash, Litecoin, Dogecoin, Dash, Zcash). XRP and Kaspa are also covered, alongside the EVM chains.

Can I broadcast transactions on testnets as well as mainnet?

Yes. Broadcasting works on both mainnets and testnets across the networks CryptoAPIs supports. For example EVM chains offer testnets such as Sepolia, Amoy, Fuji, Nile and Mordor, and UTXO chains such as Bitcoin, Litecoin and Dogecoin offer their standard testnets. Kaspa is currently mainnet only.

Does broadcasting a transaction with CryptoAPIs mean they hold my private keys?

No. The model is non-custodial for signing: you sign the transaction locally with your own keys and only send the already-signed transaction to the broadcast endpoint. CryptoAPIs relays that signed payload to a node and never sees or stores your private keys.

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