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getmempooldescendants

If txid is in the mempool, returns all in-mempool descendants.

Argument #1 - txid

Type: string, required
The transaction id (must be in mempool)

Argument #2 - verbose

Type: boolean, optional, default=false
True for a json object, false for array of transaction ids
Result (for verbose = false)
[ (json array)
"hex", (string) The transaction id of an in-mempool descendant transaction
...
]
Result (for verbose = true)
{ (json object)
"transactionid" : { (json object)
"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.
"weight" : n, (numeric) transaction weight as defined in BIP 141.
"fee" : n, (numeric) transaction fee in BTC (DEPRECATED)
"modifiedfee" : n, (numeric) transaction fee with fee deltas used for mining priority (DEPRECATED)
"time" : xxx, (numeric) local time transaction entered pool in seconds since 1 Jan 1970 GMT
"height" : n, (numeric) block height when transaction entered pool
"descendantcount" : n, (numeric) number of in-mempool descendant transactions (including this one)
"descendantsize" : n, (numeric) virtual transaction size of in-mempool descendants (including this one)
"descendantfees" : n, (numeric) modified fees (see above) of in-mempool descendants (including this one) (DEPRECATED)
"ancestorcount" : n, (numeric) number of in-mempool ancestor transactions (including this one)
"ancestorsize" : n, (numeric) virtual transaction size of in-mempool ancestors (including this one)
"ancestorfees" : n, (numeric) modified fees (see above) of in-mempool ancestors (including this one) (DEPRECATED)
"wtxid" : "hex", (string) hash of serialized transaction, including witness data
"fees" : { (json object)
"base" : n, (numeric) transaction fee in BTC
"modified" : n, (numeric) transaction fee with fee deltas used for mining priority in BTC
"ancestor" : n, (numeric) modified fees (see above) of in-mempool ancestors (including this one) in BTC
"descendant" : n (numeric) modified fees (see above) of in-mempool descendants (including this one) in BTC
},
"depends" : [ (json array) unconfirmed transactions used as inputs for this transaction
"hex", (string) parent transaction id
...
],
"spentby" : [ (json array) unconfirmed transactions spending outputs from this transaction
"hex", (string) child transaction id
...
],
"bip125-replaceable" : true|false, (boolean) Whether this transaction could be replaced due to BIP125 (replace-by-fee)
"unbroadcast" : true|false (boolean) Whether this transaction is currently unbroadcast (initial broadcast not yet acknowledged by any peers)
},
...
}
Request
Curl
Postman
curl --location --request POST 'https://btc.api.watchdata.io/node/jsonrpc?api_key=your_api_key' \
--header 'x-api-key: your_api_key' \
--header 'Content-Type: application/json' \
--data-raw '{
"jsonrpc": "1.0",
"id": "curltest",
"method": "getmempooldescendants",
"params": [
"13879c85df460fbad179d60d899b9be5b404865232c8d8066247f2a7c4b9d268"
]
}'
URL: https://btc.api.watchdata.io/node/jsonrpc?api_key=your_api_key
RequestType: POST
Body:
{
"jsonrpc": "1.0",
"id": "curltest",
"method": "getmempooldescendants",
"params": [
"13879c85df460fbad179d60d899b9be5b404865232c8d8066247f2a7c4b9d268"
]
}
Response
[
"2c812831d86ca5661917dd6dc52274b21a14678338e5c95f11ca82b2657ea393"
]