Blues de la Nacional II

Recording by La Guardia.

Recording identifiers

ISRC
ES5108800025
CopyrightID (CopyrightChains transaction hash)
0x97e15e1e3a064708f2cd3f3b766472ce4fc1abdc52d109d102e2040fb39811b6
Copyright registration time
2026-06-08T06:44:04+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:20:19Z
Bitcoin block
957118
Canonical record hash
sha256:447be0606dbe3ec88a1d0a74498041cf37a7e5194b8013a8f99cd50bda5576d9

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.