Base58 & Bitcoin Address Encoder / Decoder

Encode and decode byte strings to Base58 and Base58Check formats used in Bitcoin, IPFS, Ripple, and Solana. Inspect 4-byte double SHA-256 checksums, verify address integrity, and decode cryptographic public keys entirely in your browser with zero network transmission.

SHA-256² Verification

Samples:

Mode:

Checksum:

Alphabet:

Base58 Encoded String34 chars

Decoded Output

0062e907b15cbf27d5425399ebf6f0fb50ebb88f18c29b7d93

Base58Check Structure & Cryptographic Integrity Inspector

Base58Check encapsulates: 1 Version Byte + Payload Data + 4-Byte Double SHA-256 Checksum.

Checksum Valid (Passed SHA-256²)

Byte Breakdown Stream:25 total bytes

Version Prefix (1 Byte)

Payload Hash (20 Bytes)

Checksum (4 Bytes)

Network & Type

Bitcoin Mainnet•P2PKH Address

Standard public key hash address

Version Byte

0x00 (0)

Determines the leading characters (e.g. 0x00 starts with '1').

Double SHA-256 Checksum

0xC29B7D93

Expected: 0xC29B7D93

Extracted Payload (Excluding 4-Byte Checksum)

0062e907b15cbf27d5425399ebf6f0fb50ebb88f18

Decoded Byte Size

25 bytes

Leading Zero Bytes

1 (1)

Active Alphabet

Bitcoin / IPFS / Solana

Cryptographic Hash

Double SHA-256

Base58 Alphabet & Cryptographic Specifications

Why Base58 is used across Bitcoin, Solana, Ripple, and IPFS instead of standard Base64 or Hex.

Active Alphabet (Bitcoin / IPFS / Solana - 58 Symbols)Index 0 to 57

123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz

Intentionally Excluded Ambiguous Characters in Bitcoin Base58:

0 (Zero) — Avoids confusion with 'O'

O (Capital O) — Avoids confusion with '0'

I (Capital I) — Avoids confusion with 'l' or '1'

l (Lower l) — Avoids confusion with 'I' or '1'

Cryptocurrency Version Bytes Reference

Hex Prefix	Decimal	Cryptocurrency Network	Address / Key Type	Address Prefix
0x00	0	Bitcoin Mainnet	P2PKH Address	1
0x05	5	Bitcoin Mainnet	P2SH Address	3
0x80	128	Bitcoin Mainnet	WIF Private Key	5, K, L
0x6F	111	Bitcoin Testnet	P2PKH Address	m, n
0xC4	196	Bitcoin Testnet	P2SH Address	2
0xEF	239	Bitcoin Testnet	WIF Private Key	9, c
0x30	48	Litecoin Mainnet	P2PKH Address	L
0x32	50	Litecoin Mainnet	P2SH Address	M
0x1E	30	Dogecoin Mainnet	P2PKH Address	D
0x16	22	Dogecoin Mainnet	P2SH Address	A, 9
0x3F	63	Dash Mainnet	P2PKH Address	X
0x10	16	Zcash Mainnet	Transparent P2PKH	t1

What is Base58Check encoding?

Base58Check was created by Satoshi Nakamoto for Bitcoin addresses. It prepends a 1-byte version prefix to the payload and appends a 4-byte checksum computed via double SHA-256: SHA256(SHA256(payload))[0..4]. If a user mistypes even a single character in the address, the checksum fails with a 99.99999% probability, preventing accidental loss of funds.

Why does Solana use raw Base58 without checksum?

Solana uses 32-byte Ed25519 public keys formatted directly in raw Base58 (43 to 44 characters). Because the Solana runtime and RPC APIs validate public key geometry and signature verification cryptographically, an embedded double SHA-256 checksum is omitted to save transaction and payload bandwidth.

What is IPFS CIDv0 Base58?

Legacy IPFS Version 0 Content Identifiers (CIDv0) begin with Qm. They are 34-byte multihashes consisting of 0x12 (SHA-256 hash function code), 0x20 (32-byte digest length), followed by the 32-byte SHA-256 hash of the content, encoded in raw Base58.

Is it safe to inspect private keys or wallet seeds here?

Yes. This tool is completely client-side ('use client'). All mathematical conversions, SHA-256 hashes, and Base58 calculations run locally inside your web browser. Zero data is ever sent across the network or stored on any server.