II. Non allegro

Recording by Sergei Rachmaninoff.

Recording identifiers

ISRC
HKI192434305
CopyrightID (CopyrightChains transaction hash)
0x8afda46ed2209ef83a174f907d202ffdd453e00919b16f57ce5aa2d4f308b62c
Copyright registration time
2026-07-22T13:52:47+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-22T14:03:35Z
Bitcoin block
959137
Canonical record hash
sha256:950ae116dbfa1f48f21c848117caf6bf957b97cd27e04db41caa8e2c201b56c3

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.