Una Carta

Recording identifiers

ISRC

ART340900650

CopyrightID (CopyrightChains transaction hash)

0xb0fa894d41bfe013e662a4f555c02962ecf84a012dc5c5d037aff85b4d3ed3e3

Copyright registration time

2026-07-30T03:00:14+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-30T03:35:13Z

Bitcoin block

960203

Canonical record hash

sha256:3cb42746d4ede298a9cfae2af2261e451e6d1f5bef6bb9c18531ec1635dcce6c

• 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.