Blockchain Transaction Lifecycle

// LIFECYCLE PHASES

01TX BroadcastUser signs & broadcasts transaction to the peer network.
02Mempool EntryNodes validate syntax, signature, and UTXO availability.
03Miner SelectionCompeting miners pull TX from mempool by fee priority.
04Block AssemblyTX bundled into candidate block with coinbase reward.
05Merkle RootAll TXs hashed into Merkle tree; root written to header.
06Proof of WorkMiners iterate nonce until SHA-256 hash meets difficulty target.
07Hash SolutionValid nonce found — block hash satisfies leading-zero target.
08Network PropagationWinning miner broadcasts solved block to all peers.
09Peer VerificationEach node independently validates header, hash, and TXs.
10Chain AppendVerified block linked to chain tip via parent hash pointer.
11ConfirmationsSubsequent blocks pile on, deepening finality (6-conf rule).

// TRANSACTION DATA

TXID7f4a...c91e

FROM1BvBM...EqFWK

TO3J98t...MZKFM

AMOUNT0.4821 BTC

FEE0.0000142 BTC

SIGECDSA/secp256k1

STATUSPENDING

BLOCK #—

CONFS0

// HASH STREAM

Initializing...

Loading blockchain simulation environment.