Layer Upon Layer

Recording by Bob Holroyd.

Recording identifiers

ISRC
ES8741511107
CopyrightID (CopyrightChains transaction hash)
0x2b970234b06b7e5751b02b97c534b2d632cf17bbe3f95393b11f2db392227a83
Copyright registration time
2026-07-07T15:52:22+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:53:27Z
Bitcoin block
957124
Canonical record hash
sha256:c717a8569a16da660ae2f9d3a63d597d2509e1e1fba7e254d0fe29e3a5d49103

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.