Etude in E Minor

Recording by Francisco Tárrega.

Recording identifiers

ISRC
US5541102386
CopyrightID (CopyrightChains transaction hash)
0x88946a672ad05c4284b9b9b4f1d4d2602dd7522b5fc99268fa43e9a4dc42a30b
Copyright registration time
2026-07-07T17:24:24+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:20:19Z
Bitcoin block
957118
Canonical record hash
sha256:9cbb65cae6b6bb1fe32513f0e42ece98ede58e8e104523069b0387df3d8fe88c

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.