Gran Vals

Recording by Francisco Tárrega.

Recording identifiers

ISRC
ES71G2008415
CopyrightID (CopyrightChains transaction hash)
0xf58679af9686597b228f6819b02a20f9c2bf92b0e6928b159cfb6c5ff97950ee
Copyright registration time
2026-06-07T08:02:10+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-06-13T12:53:06Z
Bitcoin block
953515
Canonical record hash
sha256:135bed393595abc279fbe51d755c9e5636e266419943c0511aa5d57c893c7191

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.