U-Bahn

Recording by Blümchen.

Recording identifiers

ISRC
DEBL60605293
CopyrightID (CopyrightChains transaction hash)
0xdf90ed993593aad4b294b2a02db3b94f288fd69dd3a8ac6c29c2dc08d2f47645
Copyright registration time
2026-07-22T12:56:29+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-22T13:20:46Z
Bitcoin block
959132
Canonical record hash
sha256:dcd3c9cc37fa77c87aef06310604511f546da954d181ab6a083f63afe44e7038

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.