--- id: "wifaddrcomp" kind: "datatype" status: "stable" is_pii: false categories: ["cryptocurrency", "secrets"] langs: ["common"] quality: 83 url: "http://registry.apicrafter.io/datatype/wifaddrcomp" --- # Bitcoin private key in WIF (compressed public key) (`wifaddrcomp`) Bitcoin private key in Wallet Import Format (WIF) for a compressed public key: the Base58Check encoding of the byte 0x80, the 32-byte private key and the flag byte 0x01. Such keys have 52 characters and start with K or L. The value is a secret: whoever knows it can spend the funds. Testnet keys start with c and are not matched; keys for an uncompressed public key are wifaddruncomp. - Parent datatype: `private_key` - Personal data (PII): no - Categories: Cryptocurrency (cryptocurrency), Secrets and credentials (passwords, keys, tokens) (secrets) - Countries: global - Languages: Common to most languages (common) - Classification: identifier ## Detection Regular expression (Python `re`): ``` ^[KL][1-9A-HJ-NP-Za-km-z]{51}$ ``` Check digit algorithm: `base58check` ## Examples - `L1aW4aubDFB7yfras2S1mN3bqg9nwySY8nkoLmJebSLD5BWv3ENZ` — Example from https://allprivatekeys.com/bitcoin-address-format - `KwdMAjGmerYanjeui5SHS7JkmpZvVipYvB2LJGU1ZxJwYvP98617` — Sample key of the Bitcoin Wiki article on WIF with the compression flag; never import or fund it - `L1aW4aubDFB7yfras2S1mN3bqg9nwySY8nkoLmJebSLD5BWv3ENa` (invalid example) — last character changed, the checksum fails - `5HueCGU8rMjxEXxiPuD5BDku4MkFqeZyd4dZ1jvhTVqvbTLvyTJ` (invalid example) — key for an uncompressed public key (wifaddruncomp) ## Metacrafter rules 2 rules: 1 match the field name, 1 match values. - `wifaddrcomp` (data, `common/cryptocurrency.yaml`) - `wifaddrcomp_by_field` (field, `common/cryptocurrency.yaml`) ## Supported by tools - `metacrafter` ## Translations - ru: Закрытый ключ Bitcoin в формате WIF (сжатый открытый ключ) ## Sources - other: - other: ## Quality Score 83/100. Missing: authoritative source link, mapping (Wikidata, Schema.org, ...). JSON: · Edit: