Playground

Recording by Steve Lacy.

Recording identifiers

ISRC
GBWWP1904864
CopyrightID (CopyrightChains transaction hash)
0xbd7ffc57353de72d24dc5defa99c106e75563651b343e8b6bf2492b7160c6f8f
Copyright registration time
2026-06-04T04:31:53+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-06-13T12:53:06Z
Bitcoin block
953515
Canonical record hash
sha256:017611cb17aede30a7a00eaf522bb24ef0bc5153fed4c44bd365f76981a641ae

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.