San Francisco el Grande

Recording by Niña Polaca.

Recording identifiers

ISRC
ES6062178205
CopyrightID (CopyrightChains transaction hash)
0x5ec003077c1cf53e77471f29fe8a64da336df91e1dcd42d9d5b068a8b35ed722
Copyright registration time
2026-06-04T11:52:38+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-06-13T12:47:07Z
Bitcoin block
953513
Canonical record hash
sha256:b56567a06e5f544b54f9b77097401ab5430e49ed2cb4e376fe783b24d70f96e4

What this proof establishes

This recording belongs to ProofProfile's historical evidence base derived from the pre-2022 AcousticBrainz and MusicBrainz corpus. ISRC is the stable recording-level bridge from that source corpus to the authoritative cc-db-prod track record.

CopyrightChains and Bitcoin OpenTimestamps make the exact committed record independently verifiable today. The cryptographic proof does not by itself establish authorship or ownership of the underlying recording.

Read the complete pre-generative-AI provenance and verification method.