Reciprocity

Recording by Mr. Carmack.

Recording identifiers

ISRC
USUYG1281491
CopyrightID (CopyrightChains transaction hash)
0x4d4af32b72b4f5960b4d0b895aea4a88fc1695ace5280d9136c8fb058f2547a9
Copyright registration time
2026-07-06T19:43:01+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:20:19Z
Bitcoin block
957118
Canonical record hash
sha256:6b9edadd0479c412b8eecef14a0d37dfc1d71cdf21dd1deed3c451e45ba79bee

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.