Toen ik je zag (Muziekfeest op Zondag)

Recording identifiers

ISRC

NLA6A2100064

Release date of the album this recording appears on

2021-06-04

CopyrightID (CopyrightChains transaction hash)

0x27edcff675abf9e51e230835e738a3a6ba7fd621da81122149d7d69f5e9d0527

Copyright registration time

2026-08-01T01:59:32+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-08-01T02:22:04Z

Bitcoin block

960497

Canonical record hash

sha256:13f056250b4c60621f350b2c0734c446ab50208de48b98276227baa2b9ca3ae7

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC NLA6A2100064

What this proof establishes

This recording was released in 2021, before generative AI. ProofProfile's catalogue derives from the pre-2022 AcousticBrainz and MusicBrainz source corpus, and 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.