Amsterdam

Recording by Janusz Walczuk.

Recording identifiers

ISRC
PLS282100040
CopyrightID (CopyrightChains transaction hash)
0x145b0991ddfa8295831bd207310544c8a1402f373dbb477728ad57996cde2276
Copyright registration time
2026-06-07T02:09:48+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-06T06:56:49Z
Bitcoin block
956889
Canonical record hash
sha256:3f92e53a671eb6143ea065111ec69fff3125cb60b1585b02feaa3db9dc27a1dc

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.