Circles

Recording by Jo Blankenburg.

Recording identifiers

ISRC
US43C1625487
CopyrightID (CopyrightChains transaction hash)
0xa72e495686ce425629c76c1de0702a974c1801615d8f9ca5dcdaa900382c5892
Copyright registration time
2026-07-06T08:05:48+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-07T18:39:05Z
Bitcoin block
957073
Canonical record hash
sha256:207453991523c649f5427dcbf685187f6878d4a916a9966f98581cde882e462e

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.