Once

Recording by Thomas Kuehn.

Recording identifiers

ISRC
QZK6M2364148
CopyrightID (CopyrightChains transaction hash)
0x1b1a522660cd33cb173a9b2a6db89c3ab9d56f44b0f9da11178777ed2980acb3
Copyright registration time
2026-07-29T17:14:39+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-29T19:35:34Z
Bitcoin block
960138
Canonical record hash
sha256:d3460d54da376e34b0a1d17676701bf6825c624a039471f8461ede22272cf502

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.