Letter To An Old Poet

Recording identifiers

ISRC

USUG12209248

CopyrightID (CopyrightChains transaction hash)

0x2985de3dd5c3548442f2460aa9bb0f76d7e44cb72cb6c4204c5c4a617d804893

Copyright registration time

2026-06-01T21:47:00+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-06-13T12:47:07Z

Bitcoin block

953513

Canonical record hash

sha256:3d5cb7757175f516cf421e2f79affcb53589462cedc4dede46b93ff12ea345a5

• 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.