A Letter to Jimmy Page / Alumni Blues

Recording identifiers

ISRC

QM9A91660684

CopyrightID (CopyrightChains transaction hash)

0x36ac9ec60366c1f1c35214a72f44ba4d916120d126a86d1ccdd12fe6069f38ed

Copyright registration time

2026-07-08T00:53:39+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-08T03:22:41Z

Bitcoin block

957120

Canonical record hash

sha256:791d9f888f9fae745cd8ee43cd09ecade5d0b409cba83dfbdef6c0752be460dc

• 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.