Retrograde

Recording by Leo Kottke.

Recording identifiers

ISRC
USPM19902058
CopyrightID (CopyrightChains transaction hash)
0x7d7f4230d1e03b4050a04ade19366fe1e28cd2424ed02eed9685cabab35757e2
Copyright registration time
2026-07-06T22:54:12+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:53:27Z
Bitcoin block
957124
Canonical record hash
sha256:ad611aef32af2f71cbe7bad9d0b516a51a6f05a7df456ab100001db0a28dfb52

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.