The Calculator

Recording by Alberto Parmegiani.

Recording identifiers

ISRC
ITK2X1800118
CopyrightID (CopyrightChains transaction hash)
0xc643ab13a16ff18daf5c349f0cc9bbeb9aa99668e8baf3d9877cb046a64b3a4a
Copyright registration time
2026-07-30T16:57:26+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-30T17:23:26Z
Bitcoin block
960284
Canonical record hash
sha256:a567880f9cb1548a04d0b868178a20584586c398f5cd95524119f6da5f7c7006

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.