Emma & Ella

Recording by Karel Zich.

Recording identifiers

ISRC
CZA129906003
CopyrightID (CopyrightChains transaction hash)
0xb4926937396875df79f50ff8e3b70b722a4f4a68eafdabab5bcbeda0ba813fd5
Copyright registration time
2026-07-06T10:18:09+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-07T18:39:05Z
Bitcoin block
957073
Canonical record hash
sha256:58a30205d00b48483be9b11424e4a70b191b438cf7fc22683125bacd656f6831

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.