Having a Blast - Cassette demo

Recording by Green Day.

Recording identifiers

ISRC
USRE12300367
CopyrightID (CopyrightChains transaction hash)
0x5f81c04cc343b2e01a8e0d84c35fb1e98c344267e8075c2edca717e5d46901a0
Copyright registration time
2026-06-10T01:23:03+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-06-13T13:32:09Z
Bitcoin block
953520
Canonical record hash
sha256:a727977aab55f87554abe647b3ccaa1fde5c73866266be4cfb90878e9f6b693e

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.