Gran Vals

Recording by Francisco Tárrega.

Recording identifiers

ISRC
DEVU51807473
CopyrightID (CopyrightChains transaction hash)
0xef85cc0d6b69368d1c0d0ce506fc1a6525fa9831b72a026ba4713c27e0c08c4f
Copyright registration time
2026-06-23T09:39:22+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-02T03:55:08Z
Bitcoin block
956304
Canonical record hash
sha256:7f3d1670ab3d9bb02c75686e6999608e430d8cebd6595e147f0f2761a4b3bd32

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.