Getmempoolancestors

getmempoolancestors "txid" ( verbose )

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

Arguments:
1. txid       (string, required) The transaction id (must be in mempool)
2. verbose    (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 ancestor transaction
  ...
]

Result (for verbose = true):
{                           (json object)
  "size" : n,               (numeric) transaction size.
  "fee" : n,                (numeric) transaction fee in BCHA (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) 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) transaction size of in-mempool ancestors (including this one)
  "ancestorfees" : n,       (numeric) modified fees (see above) of in-mempool ancestors (including this one) (DEPRECATED)
  "fees" : {                (json object)
    "base" : n,             (numeric) transaction fee in BCHA
    "modified" : n,         (numeric) transaction fee with fee deltas used for mining priority in BCHA
    "ancestor" : n,         (numeric) modified fees (see above) of in-mempool ancestors (including this one) in BCHA
    "descendant" : n,       (numeric) modified fees (see above) of in-mempool descendants (including this one) in BCHA
  },
  "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
    ...
  ],
  ...
}

Examples:
> bitcoin-cli getmempoolancestors "mytxid"
> curl --user myusername --data-binary '{"jsonrpc": "1.0", "id": "curltest", "method": "getmempoolancestors", "params": ["mytxid"]}' -H 'content-type: text/plain;' http://127.0.0.1:8332/