13th Floor

Recording by Matthew Stevens.

Recording identifiers

ISRC
GB4DA1800119
CopyrightID (CopyrightChains transaction hash)
0x10e2a0e32d739f5afd02afe03875ea212d724eb995b0b59048dd08bf6f5acbb1
Copyright registration time
2026-07-30T06:16:51+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-30T06:39:12Z
Bitcoin block
960216
Canonical record hash
sha256:8e5f3a187d4d8df3c25dc790bcd223ec8fb3eff32fdaa1c1efcf7120f8f68ed6

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.