Ik Heb Zo Vaak Aan Amsterdam Gedacht

Recording identifiers

ISRC

NLA305800128

Release date of the album this recording appears on

1956-01-01

CopyrightID (CopyrightChains transaction hash)

0xac7443c2b26cd187894a250c97259fe845b28319dc8d0a7a8736796c02ce82a8

Copyright registration time

2026-07-08T05:24:51+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-09T02:31:37Z

Bitcoin block

957249

Canonical record hash

sha256:53d25b07022a100cabebc185072879a8fed0d7140c2c84448d34a8804ab62316

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC NLA305800128

What this proof establishes

This recording was released in 1956, 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.