combinerawtransaction

rawtransactions safe since 0.15.0

combines multiple partially signed transactions into one transaction. The combined transaction may be another partially signed transaction or a fully signed transaction.

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Run this RPC switch to raw JSON
The hex strings of partially signed transactions
running...
Signature: ["hexstring",...]
Call from your own code

Replace $BITCOIN_RPC_USER / $BITCOIN_RPC_PASSWORD with credentials from your bitcoind's bitcoin.conf, and replace localhost:8332 with your node's RPC address.

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combinerawtransaction ["hexstring",...]

Combine multiple partially signed transactions into one transaction.
The combined transaction may be another partially signed transaction or a 
fully signed transaction.

Arguments:
1. txs                 (json array, required) The hex strings of partially signed transactions
     [
       "hexstring",    (string) A hex-encoded raw transaction
       ...
     ]

Result:
"str"    (string) The hex-encoded raw transaction with signature(s)

Examples:
> bitcoin-cli combinerawtransaction '["myhex1", "myhex2", "myhex3"]'
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