Our Last Summer - 1999 / Musical "Mamma Mia"

Recording identifiers

ISRC

GBAKW9900324

Release date of the album this recording appears on

2001-01-01

CopyrightID (CopyrightChains transaction hash)

0xf5f7552295cb064f9291d7870e16279a279f650db8ddfb92f97adab65c0f41b0

Copyright registration time

2026-07-30T16:59:45+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-30T17:23:26Z

Bitcoin block

960284

Canonical record hash

sha256:5d5815a2707fb25b3d54b633f41cb4b79f9f1d95a57004ae3565a1c27f9ab5b1

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC GBAKW9900324

What this proof establishes

This recording was released in 2001, 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.