Using JSON HTTP POST; what online service do I best use to broadcast a Bitcoin Cash transaction?
I'm looking for the equivalent of https://blockchain.info/pushtx
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Please give more details on what you tried, what you expect as a result and what errors are you encountering. – Efren Aug 03 '17 at 05:11
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There are a few options to broadcast a transaction for Bitcoin and Bitcoin-Cash. The first, but also the most expensive in terms of time, is to setup a BitcoinABC node on your machine and let it sync. Once that's done you can simply call the sendrawtransaction API call and it'll get pushed to other nodes in the network.
The second option is to use Wladimir's bitcoin-submittx tool to connect to a number of nodes and submit the transaction to them. This tool was originally written for Bitcoin, but works also for Bitcoin-Cash. It requires a number of node addresses, but you can use the DNS seeds to get some:
python2 bitcoin-submittx mainnet ${TXHEX} $(dig seed-abc.bitcoinforks.org)
This should submit the TX to some random nodes in the network.
cdecker
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https://rest.bitcoin.com provides a REST API for broadcasting transactions. This BITBOX code example shows how to construct a BCH transaction then broadcast it using rest.bitcoin.com:
In particular, look at the last few lines of the example:
// Broadcast transation to the network
const broadcast = await BITBOX.RawTransactions.sendRawTransaction(hex)
console.log(`Transaction ID: ${broadcast}`)
API documentation: https://developer.bitcoin.com/bitbox/docs/getting-started
If you already have the raw hex and you want a manual way to broadcast it, you can go directly to the endpoint on rest.bitcoin.com, and paste in the hex: https://rest.bitcoin.com/#/rawtransactions/sendRawTransaction
Chris Troutner
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