Slide Rule

Recording by Mark Lettieri.

Recording identifiers

ISRC
USHM91136984
CopyrightID (CopyrightChains transaction hash)
0x2f521983222e03a6e5bea64843f483b038c5055f1e62d3c825b4611bedbde0d4
Copyright registration time
2026-07-06T20:35:39+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:22:41Z
Bitcoin block
957120
Canonical record hash
sha256:1286712d7609331d2bea5cdacbc4df04ce45bbdcc0f35fa08007a6a09027992c

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.