Gran Vals

Recording by Francisco Tárrega.

Recording identifiers

ISRC
USX9P1014174
CopyrightID (CopyrightChains transaction hash)
0x9d08571ece4dc159724c53627c16f39354925f101c2447cd7d629bb6c3b01540
Copyright registration time
2026-07-31T11:31:54+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-31T12:24:41Z
Bitcoin block
960397
Canonical record hash
sha256:7b8e40c76b65f35053a55ae75ad650bb4045f99e138679fa111fd51c7a2ccdfe

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.