Last Laugh (Acoustic Version)

Recording identifiers

ISRC

ZAC011301606

CopyrightID (CopyrightChains transaction hash)

0x8c78ca5ecefcc08d3fee0fe8e78be7f42b49b58f9f7b8adead67fdc00f426d13

Copyright registration time

2026-07-30T18:02:34+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-30T20:09:33Z

Bitcoin block

960302

Canonical record hash

sha256:de44e9b80ee85085de8d88859ba7a3cc82a5a45d44d11e5307988a92718e2123

• 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.