testmempoolaccept

testmempoolaccept [“rawtx”,…] ( maxfeerate )

Returns result of mempool acceptance tests indicating if raw transaction (serialized, hex-encoded) would be accepted by mempool.

This checks if the transaction violates the consensus or policy rules.

See sendrawtransaction call.

Arguments:

rawtxs (json array, required) An array of hex strings of raw transactions. Length must be one for now. [ “rawtx”, (string) … ]
maxfeerate (numeric or string, optional, default=0.10) Reject transactions whose fee rate is higher than the specified value, expressed in BTC/kB

Result: [ (json array) The result of the mempool acceptance test for each raw transaction in the input array. Length is exactly one for now. { (json object) “txid” : “hex”, (string) The transaction hash in hex “allowed” : true|false, (boolean) If the mempool allows this tx to be inserted “vsize” : n, (numeric) Virtual transaction size as defined in BIP 141. This is different from actual serialized size for witness transactions as witness data is discounted (only present when ‘allowed’ is true) “fees” : { (json object) Transaction fees (only present if ‘allowed’ is true) “base” : n (numeric) transaction fee in BTC }, “reject-reason” : “str” (string) Rejection string (only present when ‘allowed’ is false) }, … ]

Examples:

Create a transaction

bitcoin-cli createrawtransaction ”[{“txid” : “mytxid”,“vout”:0}]” ”{“myaddress”:0.01}” Sign the transaction, and get back the hex bitcoin-cli signrawtransactionwithwallet “myhex”

Test acceptance of the transaction (signed hex)

bitcoin-cli testmempoolaccept ’[“signedhex”]’

As a JSON-RPC call

curl —user myusername —data-binary ’{“jsonrpc”: “1.0”, “id”: “curltest”, “method”: “testmempoolaccept”, “params”: [[“signedhex”]]}’ -H ‘content-type: text/plain;’ http://127.0.0.1:8332/