在使用rpc命令时发现gettransaction可能会查询不到交易，但getrawtransaction可以查到，如：
y@ubuntu:~$ bitcoin-cli gettransaction 1b08e06789597d04cf691f49c9d7685b8c7571faf9643096a8296d0bfcdd498a false error code: -5 error message: Invalid or non-wallet transaction id y@ubuntu:~$ bitcoin-cli getrawtransaction 1b08e06789597d04cf691f49c9d7685b8c7571faf9643096a8296d0bfcdd498a false 02000000010000000000000000000000000000000000000000000000000000000000000000ffffffff0401650101ffffffff0200f2052a01000000232103808d3b1ff355117641b14e54c4aafe4f588a79aa24246e04a1b3176c0eb75280ac0000000000000000266a24aa21a9ede2f61c3f71d1defd3fa999dfa36953755c690689799962b48bebd836974e8cf900000000查看比特币源码，发现： gettransaction是定义在src/wallet/rpcwallet.cpp中的rpc接口，只能查钱包内的交易。
static UniValue gettransaction(const JSONRPCRequest& request) { std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request); CWallet* const pwallet = wallet.get(); if (!EnsureWalletIsAvailable(pwallet, request.fHelp)) { return NullUniValue; } if (request.fHelp || request.params.size() < 1 || request.params.size() > 2) throw std::runtime_error( "gettransaction \"txid\" ( include_watchonly )\n" "\nGet detailed information about in-wallet transaction <txid>\n" "\nArguments:\n" "1. \"txid\" (string, required) The transaction id\n" "2. \"include_watchonly\" (bool, optional, default=false) Whether to include watch-only addresses in balance calculation and details[]\n" "\nResult:\n" "{\n" " \"amount\" : x.xxx, (numeric) The transaction amount in " + CURRENCY_UNIT + "\n" " \"fee\": x.xxx, (numeric) The amount of the fee in " + CURRENCY_UNIT + ". This is negative and only available for the \n" " 'send' category of transactions.\n" " \"confirmations\" : n, (numeric) The number of confirmations\n" " \"blockhash\" : \"hash\", (string) The block hash\n" " \"blockindex\" : xx, (numeric) The index of the transaction in the block that includes it\n" " \"blocktime\" : ttt, (numeric) The time in seconds since epoch (1 Jan 1970 GMT)\n" " \"txid\" : \"transactionid\", (string) The transaction id.\n" " \"time\" : ttt, (numeric) The transaction time in seconds since epoch (1 Jan 1970 GMT)\n" " \"timereceived\" : ttt, (numeric) The time received in seconds since epoch (1 Jan 1970 GMT)\n" " \"bip125-replaceable\": \"yes|no|unknown\", (string) Whether this transaction could be replaced due to BIP125 (replace-by-fee);\n" " may be unknown for unconfirmed transactions not in the mempool\n" " \"details\" : [\n" " {\n" " \"address\" : \"address\", (string) The bitcoin address involved in the transaction\n" " \"category\" : \"send|receive\", (string) The category, either 'send' or 'receive'\n" " \"amount\" : x.xxx, (numeric) The amount in " + CURRENCY_UNIT + "\n" " \"label\" : \"label\", (string) A comment for the address/transaction, if any\n" " \"vout\" : n, (numeric) the vout value\n" " \"fee\": x.xxx, (numeric) The amount of the fee in " + CURRENCY_UNIT + ". This is negative and only available for the \n" " 'send' category of transactions.\n" " \"abandoned\": xxx (bool) 'true' if the transaction has been abandoned (inputs are respendable). Only available for the \n" " 'send' category of transactions.\n" " }\n" " ,...\n" " ],\n" " \"hex\" : \"data\" (string) Raw data for transaction\n" "}\n" "\nExamples:\n" + HelpExampleCli("gettransaction", "\"1075db55d416d3ca199f55b6084e2115b9345e16c5cf302fc80e9d5fbf5d48d\"") + HelpExampleCli("gettransaction", "\"1075db55d416d3ca199f55b6084e2115b9345e16c5cf302fc80e9d5fbf5d48d\" true") + HelpExampleRpc("gettransaction", "\"1075db55d416d3ca199f55b6084e2115b9345e16c5cf302fc80e9d5fbf5d48d\"") ); // Make sure the results are valid at least up to the most recent block // the user could have gotten from another RPC command prior to now pwallet->BlockUntilSyncedToCurrentChain(); LOCK2(cs_main, pwallet->cs_wallet); uint256 hash; hash.SetHex(request.params[0].get_str()); isminefilter filter = ISMINE_SPENDABLE; if(!request.params[1].isNull()) if(request.params[1].get_bool()) filter = filter | ISMINE_WATCH_ONLY; UniValue entry(UniValue::VOBJ); auto it = pwallet->mapWallet.find(hash); if (it == pwallet->mapWallet.end()) { throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Invalid or non-wallet transaction id"); } const CWalletTx& wtx = it->second; CAmount nCredit = wtx.GetCredit(filter); CAmount nDebit = wtx.GetDebit(filter); CAmount nNet = nCredit - nDebit; CAmount nFee = (wtx.IsFromMe(filter) ? wtx.tx->GetValueOut() - nDebit : 0); entry.pushKV("amount", ValueFromAmount(nNet - nFee)); if (wtx.IsFromMe(filter)) entry.pushKV("fee", ValueFromAmount(nFee)); WalletTxToJSON(wtx, entry); UniValue details(UniValue::VARR); ListTransactions(pwallet, wtx, 0, false, details, filter); entry.pushKV("details", details); std::string strHex = EncodeHexTx(*wtx.tx, RPCSerializationFlags()); entry.pushKV("hex", strHex); return entry; }而getrawtransaction是src/rpc/rawtransaction.cpp中的rpc接口，默认是只查询交易池中的交易，但是如果开启了-txindex 选项，则也会查询区块链中的交易。
static UniValue getrawtransaction(const JSONRPCRequest& request) { if (request.fHelp || request.params.size() < 1 || request.params.size() > 3) throw std::runtime_error( "getrawtransaction \"txid\" ( verbose \"blockhash\" )\n" "\nNOTE: By default this function only works for mempool transactions. If the -txindex option is\n" "enabled, it also works for blockchain transactions. If the block which contains the transaction\n" "is known, its hash can be provided even for nodes without -txindex. Note that if a blockhash is\n" "provided, only that block will be searched and if the transaction is in the mempool or other\n" "blocks, or if this node does not have the given block available, the transaction will not be found.\n" "DEPRECATED: for now, it also works for transactions with unspent outputs.\n" "\nReturn the raw transaction data.\n" "\nIf verbose is 'true', returns an Object with information about 'txid'.\n" "If verbose is 'false' or omitted, returns a string that is serialized, hex-encoded data for 'txid'.\n" "\nArguments:\n" "1. \"txid\" (string, required) The transaction id\n" "2. verbose (bool, optional, default=false) If false, return a string, otherwise return a json object\n" "3. \"blockhash\" (string, optional) The block in which to look for the transaction\n" "\nResult (if verbose is not set or set to false):\n" "\"data\" (string) The serialized, hex-encoded data for 'txid'\n" "\nResult (if verbose is set to true):\n" "{\n" " \"in_active_chain\": b, (bool) Whether specified block is in the active chain or not (only present with explicit \"blockhash\" argument)\n" " \"hex\" : \"data\", (string) The serialized, hex-encoded data for 'txid'\n" " \"txid\" : \"id\", (string) The transaction id (same as provided)\n" " \"hash\" : \"id\", (string) The transaction hash (differs from txid for witness transactions)\n" " \"size\" : n, (numeric) The serialized transaction size\n" " \"vsize\" : n, (numeric) The virtual transaction size (differs from size for witness transactions)\n" " \"weight\" : n, (numeric) The transaction's weight (between vsize*4-3 and vsize*4)\n" " \"version\" : n, (numeric) The version\n" " \"locktime\" : ttt, (numeric) The lock time\n" " \"vin\" : [ (array of json objects)\n" " {\n" " \"txid\": \"id\", (string) The transaction id\n" " \"vout\": n, (numeric) \n" " \"scriptSig\": { (json object) The script\n" " \"asm\": \"asm\", (string) asm\n" " \"hex\": \"hex\" (string) hex\n" " },\n" " \"sequence\": n (numeric) The script sequence number\n" " \"txinwitness\": [\"hex\", ...] (array of string) hex-encoded witness data (if any)\n" " }\n" " ,...\n" " ],\n" " \"vout\" : [ (array of json objects)\n" " {\n" " \"value\" : x.xxx, (numeric) The value in " + CURRENCY_UNIT + "\n" " \"n\" : n, (numeric) index\n" " \"scriptPubKey\" : { (json object)\n" " \"asm\" : \"asm\", (string) the asm\n" " \"hex\" : \"hex\", (string) the hex\n" " \"reqSigs\" : n, (numeric) The required sigs\n" " \"type\" : \"pubkeyhash\", (string) The type, eg 'pubkeyhash'\n" " \"addresses\" : [ (json array of string)\n" " \"address\" (string) bitcoin address\n" " ,...\n" " ]\n" " }\n" " }\n" " ,...\n" " ],\n" " \"blockhash\" : \"hash\", (string) the block hash\n" " \"confirmations\" : n, (numeric) The confirmations\n" " \"time\" : ttt, (numeric) The transaction time in seconds since epoch (Jan 1 1970 GMT)\n" " \"blocktime\" : ttt (numeric) The block time in seconds since epoch (Jan 1 1970 GMT)\n" "}\n" "\nExamples:\n" + HelpExampleCli("getrawtransaction", "\"mytxid\"") + HelpExampleCli("getrawtransaction", "\"mytxid\" true") + HelpExampleRpc("getrawtransaction", "\"mytxid\", true") + HelpExampleCli("getrawtransaction", "\"mytxid\" false \"myblockhash\"") + HelpExampleCli("getrawtransaction", "\"mytxid\" true \"myblockhash\"") ); bool in_active_chain = true; uint256 hash = ParseHashV(request.params[0], "parameter 1"); CBlockIndex* blockindex = nullptr; if (hash == Params().GenesisBlock().hashMerkleRoot) { // Special exception for the genesis block coinbase transaction throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "The genesis block coinbase is not considered an ordinary transaction and cannot be retrieved"); } // Accept either a bool (true) or a num (>=1) to indicate verbose output. bool fVerbose = false; if (!request.params[1].isNull()) { fVerbose = request.params[1].isNum() ? (request.params[1].get_int() != 0) : request.params[1].get_bool(); } if (!request.params[2].isNull()) { LOCK(cs_main); uint256 blockhash = ParseHashV(request.params[2], "parameter 3"); blockindex = LookupBlockIndex(blockhash); if (!blockindex) { throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Block hash not found"); } in_active_chain = chainActive.Contains(blockindex); } bool f_txindex_ready = false; if (g_txindex && !blockindex) { f_txindex_ready = g_txindex->BlockUntilSyncedToCurrentChain(); } CTransactionRef tx; uint256 hash_block; if (!GetTransaction(hash, tx, Params().GetConsensus(), hash_block, true, blockindex)) { std::string errmsg; if (blockindex) { if (!(blockindex->nStatus & BLOCK_HAVE_DATA)) { throw JSONRPCError(RPC_MISC_ERROR, "Block not available"); } errmsg = "No such transaction found in the provided block"; } else if (!g_txindex) { errmsg = "No such mempool transaction. Use -txindex to enable blockchain transaction queries"; } else if (!f_txindex_ready) { errmsg = "No such mempool transaction. Blockchain transactions are still in the process of being indexed"; } else { errmsg = "No such mempool or blockchain transaction"; } throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, errmsg + ". Use gettransaction for wallet transactions."); } if (!fVerbose) { return EncodeHexTx(*tx, RPCSerializationFlags()); } UniValue result(UniValue::VOBJ); if (blockindex) result.pushKV("in_active_chain", in_active_chain); TxToJSON(*tx, hash_block, result); return result; }