The Ballad of Sacco and Vanzetti

Recording identifiers

ISRC

FRR640600017

Release date of the album this recording appears on

2009-11-16

CopyrightID (CopyrightChains transaction hash)

0xc9c020289e5fc172ca0bd2813b53d5d35dd3feb87226c2778ac3daf43e32a8b7

Copyright registration time

2026-06-05T21:23:40+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-06-13T15:41:10Z

Bitcoin block

953528

Canonical record hash

sha256:b0fc9e77fac542b5fcd513cc5e71bc8c393a263483dbba9a35e6dfe1e7ae85cf

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC FRR640600017

What this proof establishes

This recording was released in 2009, before generative AI. ProofProfile's catalogue derives from the pre-2022 AcousticBrainz and MusicBrainz source corpus, and 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.