Metropolis Zone (From "Sonic The Hedgehog 2")

Recording identifiers

ISRC

QZGWX2075056

Release date of the album this recording appears on

2020-12-30

CopyrightID (CopyrightChains transaction hash)

0x5f759ea5f48fc85169ae6812f46ee08b7dd0ca29d68271e475c5b771a176ef95

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-31T18:48:12Z

Bitcoin block

960448

Canonical record hash

sha256:c28a36291cf302236d47021dceb9897bf4780e8b7dfe06397c076318b22f0565

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC QZGWX2075056

What this proof establishes

This recording was released in 2020, 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.