Concentric Circles

Recording by John Surman.

Recording identifiers

ISRC
DEB331758810
CopyrightID (CopyrightChains transaction hash)
0x813a7ab424503e28d5d921d2763c33593ab822589e544e3d85942fd31bcc0dff
Copyright registration time
2026-06-27T10:27:13+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-02T03:55:08Z
Bitcoin block
956304
Canonical record hash
sha256:9120dfc8cef229ff6cc66cff71d297de93cd10fde2374bfb2ef2734ef29ad4ff

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.