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Developer utility

Multi-Hash Sandbox

Client-side WebAssembly calculator for Grøstl, Skein, BLAKE, BMW, JH, and SHA-3 (Keccak-512) — the six legacy multi-hash algorithms documented for SecureCoin (SRC).

Computed locally in your browser via WebAssembly (SPHlib). Nothing is sent to a server.

Client-side WASM only16 characters · 16 UTF-8 bytes

SHA-256 of UTF-8 input (OTS helper)

Standard SHA-256 over the same UTF-8 bytes — useful for OpenTimestamps or audit manifests. Distinct from the six 512-bit SPHlib outputs below.

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512-bit digest outputs

Single-pass SPHlib hashes matching the six-algorithm family documented for SecureCoin (SRC). The SHA-3 row uses Keccak-512 (not FIPS SHA3-512 padding) — see TR-SCL-2026-02.

  • 1Grøstl-512

    groestl512

    —

  • 2Skein-512

    skein512

    —

  • 3BLAKE-512

    blake512

    —

  • 4Blue Midnight Wish-512

    bmw512

    —

  • 5JH-512

    jh512

    —

  • 6SHA-3 (Keccak-512)

    keccak512

    —

See also Keypair Generator, Research and TR-SCL-2026-01. SecureCoin (SRC) archive: securecoin.org/introduction.