Heart of the City

Recording by Fritz Kalkbrenner.

Recording identifiers

ISRC
DEAF71490710
CopyrightID (CopyrightChains transaction hash)
0xe93abfc899220cb63898928e0d3e45a50b0cb2eb6c90b739139f6cfcfcd03c37
Copyright registration time
2026-06-19T22:36:42+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-02T03:30:09Z
Bitcoin block
956302
Canonical record hash
sha256:a75cf175cacfba414ae670a112e44c444decd65755b1f05394a4970abf55e122

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.