learn me a bitcoin

Explorer ◤
Beginners ◤
- How Does Bitcoin Work?
- Getting Started
  - Wallets
  - Exchanges
  - Sending
  - Security
- Guide
  - The Bitcoin Network
  - Node
  - Mining
  - The Blockchain
  - Blocks
  - Difficulty
  - Transactions
  - Outputs
  - Locks
  - Keys & Addresses
  - Private Keys
  - Public Keys
  - Digital Signatures
  - SegWit
Technical ◤
- Networking
  - Node
  - Magic Bytes
- Mining
- Blockchain
- Block
  - Version
  - Previous Block
  - Merkle Root
  - Time
  - Bits
  - Nonce
  - Block Hash
  - blk.dat
- Transaction
  - Input
    - TXID
    - VOUT
    - ScriptSig
    - Sequence
  - Output
    - ScriptPubKey
  - Witness
  - Locktime
  - Fee
  - Size
  - UTXO
  - wTXID
  - PSBT
- Script
  - P2PK
  - P2PKH
  - P2MS
  - P2SH
  - P2SH-P2WPKH
  - P2SH-P2WSH
  - P2WPKH
  - P2WSH
  - P2TR
  - OP_RETURN
- Keys
- Cryptography
  - Hash Function
  - Elliptic Curve
    - ECDSA
    - Schnorr Signatures
- Upgrades
  - Segregated Witness
  - Taproot
- General
Tools ◤
- General
  - Reverse Bytes [+]
  - Little Endian [+]
  - Base Converter [+]
  - Compact Size [+]
  - ASCII [+]
  - Unix Time [+]
  - Unit Converter [+]
- Blocks
  - Block Hash [+]
  - Block Header [+]
  - Merkle Root [+]
  - Target Bits [+]
  - Target Adjustment [+]
  - Difficulty [+]
  - Version Bits [+]
- Transactions
  - Transaction Builder [+]
  - Transaction Splitter [+]
  - TXID [+]
  - wTXID [+]
  - Script [+]
  - Sequence [+]
  - Relative Locktime [+]
  - PSBT Decoder [+]
- Keys & Addresses
  - Private Key [+]
  - Public Key [+]
  - Address (Base58) [+]
  - Address (Bech32) [+]
  - WIF [+]
  - Checksum [+]
  - Base58 [+]
  - Base58Check [+]
  - Bech32 [+]
- HD Wallets
  - Mnemonic Seed [+]
  - Extended Keys [+]
  - Derivation Paths [+]
  - Address (Extended Key) [+]
- Hash Functions
  - HASH256 [+]
  - HASH160 [+]
  - SHA-256 [+]
  - RIPEMD160 [+]
  - SHA-256 (Text) [+]
  - HMAC-SHA512 [+]
  - PBKDF2 [+]
  - Tagged Hash [+]
- Cryptography
  - ECDSA Sign [+]
  - ECDSA Verify [+]
  - DER Signature [+]
  - Schnorr Sign [+]
  - Schnorr Verify [+]
  - Modular Inverse [+]
  - EC Double [+]
  - EC Add [+]
  - EC Multiply [+]

Transaction Icon Transaction

cf4ca1f43b0693a2b23f99ebf952ec861698f869e2db4cf3e1d81243b35afa67

Summary

Location	Block 423,496 485,785 confirmations

Inputs	1 53,534,689 sats
Outputs	17 53,500,358 sats

Fee	34,332 sats
Size	857.00 vbytes
Feerate	40.06 sats/vbyte

Features	Segwit RBF

Data

Decoded Hex

Version

1

Inputs (1)

Input 0

TXID 400fd7ffd83288c87c9a30349dcf5b00ee28721816177e7020510ecec7873aa4

VOUT 0

scriptSig ASM Hex

OP_0
OP_PUSHBYTES_72
3045022100a90a9c83015ff4c484ffcdf2bc6b3b07f200b331a7a23f305b781199b360a5e702205e0fa81fc805db6bab96c224e9768d25de69cb2f60ccf93b2162589a46b8762401
OP_PUSHBYTES_72
3045022100cd77fc3e5e29b33d7e85f1ea6e4fe3aca3f82b6b8c12fae3be5732456bef1420022066c7356b75920b7c5fecb4158ec61f75e50ec3ba707c75d87cdd9a4d9a91777d01
OP_PUSHDATA1
69
522103910c1d47fe174677076dbbe6a61c29877a41b0413cc2a9ee5f8692f4ca48bb432102b42e0f8f5437d6236b5beec15fca0f3ec0f92247ac611b7f3b5a10f1565f72da21030b04b22b079ebc89457dee2c49fa7fa9fe876fb40c53f7f3e11ac76cf17f3b0d53ae

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

Type: P2SH

Sequence

ffffffff

Locktime: Not Enabled
RBF: Not Enabled

Locktime

0

TXID: cf4ca1f43b0693a2b23f99ebf952ec861698f869e2db4cf3e1d81243b35afa67
wTXID: cf4ca1f43b0693a2b23f99ebf952ec861698f869e2db4cf3e1d81243b35afa67

857 bytes (857 + 0)
857.00 vbytes (857 x 1 + 0 x 0.25)

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