Amsterdam

Recording by Hildegard Knef.

Recording identifiers

ISRC
DEF077804660
CopyrightID (CopyrightChains transaction hash)
0x333e4fbccbb9dab7b3a19debea66053c71707d8286f23e27f9a7f98921e1e270
Copyright registration time
2026-07-06T10:42:31+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-07T16:07:00Z
Bitcoin block
957061
Canonical record hash
sha256:021c5c109da7794ed15a58f3be3aee54d5512ee5c20af20edf09cb7b48bac4a0

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.