Tough at the Top - Origin Unknown Remix

Recording identifiers

ISRC

GBAGN9800050

CopyrightID (CopyrightChains transaction hash)

0x4ac23f328e8d0f5d3db3a5ec819088f726821f2b654711e4194e1debfe192b95

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-31T18:48:12Z

Bitcoin block

960448

Canonical record hash

sha256:5b57fbe504646ebdaa281697064cce6f7231093a904b06f41864d4320a57cfc5

• 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.