Back & Forth

Recording by Tom Kristiaan.

Recording identifiers

ISRC
NL4WT2400193
CopyrightID (CopyrightChains transaction hash)
0x93ba540205099a3eb0844fae951eeebe7929c539253daec022e58b8c74b85712
Copyright registration time
2026-06-10T02:44:14+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-06-13T13:32:09Z
Bitcoin block
953520
Canonical record hash
sha256:06420b0613db1596db002de18126a7870f25b786d576b72bdc30fea57a26ee36

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.