Vals en Do Sostenido Menor,Op. 64, No. 2

Recording identifiers

ISRC

ARF107900123

CopyrightID (CopyrightChains transaction hash)

0xda1dad7e8a144f1ece04e18b8cf4127bd9ce93808344d1fa1782f7ff955fa7d2

Copyright registration time

2026-07-06T08:38:24+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-13T07:53:33Z

Bitcoin block

957819

Canonical record hash

sha256:15f6a21f1977e854aaf07d42ced9de11b9f42b45d5d323e0e2ca8f452ce0f8fd

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result

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.