Heart and Soul

Recording by Mark Kroos.

Recording identifiers

ISRC
QZFYX2065344
CopyrightID (CopyrightChains transaction hash)
0x02391711f848c06a67043255b23f9b94c7075122a192ea90dc73597636c0f795
Copyright registration time
2026-08-01T04:00:25+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-08-01T04:30:37Z
Bitcoin block
960509
Canonical record hash
sha256:7e5e89c8b2bf7a2ed85e848095527e0fb6ff61976bf7fb8634aa6bed9078ecb8

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.