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Recording by Het Westlands Mannenkoor.

Recording identifiers

ISRC
NLA521503914
CopyrightID (CopyrightChains transaction hash)
0xa72d48691986b05b3d8c9f49da1c1cb135478c990b9115e787502e58399fa248
Copyright registration time
2026-07-31T08:17:50+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-31T08:38:45Z
Bitcoin block
960370
Canonical record hash
sha256:33aba0cbb7aed47d59435d1f1025394d54ec961bbf77ec26986760bb8d69fabe

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.