🪙 Bitcoin
Bitcoin tools that run entirely in your browser. Keys you enter never leave your device.
Blocks
📋 Block HeaderDecode a block header and compute its hash
🌳 Merkle RootCompute the merkle root of a list of TXIDs
🎯 Target BitsConvert between a target and its compact bits
⚖️ Target AdjustmentCalculate the next difficulty target
Transactions
🏗️ Transaction BuilderBuild raw transaction data
✂️ Transaction SplitterSplit a raw transaction into its fields
🆔 TXID / wTXIDCompute the TXID and wTXID of a raw transaction
📜 ScriptDecode and encode a script
🔁 SequenceDecode or build an input's sequence: RBF and relative locktime
📦 PSBT DecoderDecode a partially signed transaction
Keys & Addresses
📬 AddressEncode and decode P2PKH, P2SH, P2WPKH, P2WSH and P2TR addresses
🗝️ WIF Private KeyConvert a private key to and from WIF
☑️ Base58CheckConvert between hex and Base58, with or without a checksum
HD Wallets
🌱 Mnemonic SeedGenerate a BIP 39 mnemonic and seed
🧬 Extended KeysDerive a child extended key from a parent
🛤️ Derivation PathsDerive keys and addresses along a path