24 Progressive Lessons, Op. 31: No. 10, Cantabile

Recording by Fernando Sor.

Recording identifiers

ISRC
NLY331405146
CopyrightID (CopyrightChains transaction hash)
0x267fceb341e45d3e601ffd51627be5c6810e772905951d8cecd49781a1c7f094
Copyright registration time
2026-07-06T07:42:35+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-07T18:39:05Z
Bitcoin block
957073
Canonical record hash
sha256:ccdccece27c0d11a8b02c11bb2910bf8d6f2f73d7c823546761ddb40ace299da

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.