Surabaya-Johnny

Recording by Lotte Lenya.

Recording identifiers

ISRC
GBURF1100181
CopyrightID (CopyrightChains transaction hash)
0x200dafdf61ed6a685dd37d5b5abb5c0fb17ac51316ddda757660ac380dfe2bde
Copyright registration time
2026-07-06T09:44:02+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-07T14:41:13Z
Bitcoin block
957050
Canonical record hash
sha256:ba11302b60fa5b26ab404bd95b7e1f56204f10922887e0ae59641c8ba2208ceb

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.