24 Progressive Lessons, Op. 31: No. 6, Andante

Recording by Fernando Sor.

Recording identifiers

ISRC
NLY331405142
CopyrightID (CopyrightChains transaction hash)
0x523dc0d4d8f8a40d5aa237da1a9d33f3b7a187a1c07a9f0078f844227b5f9f67
Copyright registration time
2026-06-23T10:03:40+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-02T03:55:08Z
Bitcoin block
956304
Canonical record hash
sha256:59416206c9c9453277c3d05af94bc3614b67b8caec1ec89ba953b97ca0f9d871

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.