Gran Vals

Recording by Francisco Tárrega.

Recording identifiers

ISRC
USHM92019634
CopyrightID (CopyrightChains transaction hash)
0xb55541cc391e376584f7280b66e6df80db14438ff0fb365d37489db2cf0b4a4f
Copyright registration time
2026-07-07T15:18:37+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:20:19Z
Bitcoin block
957118
Canonical record hash
sha256:b261acceddf0e3b9e4b48de665389f9a63de6d9d9540b70647e3c1e27c39fae7

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.