Missa solemnis in C, K.337: 1. Kyrie

Recording identifiers

ISRC

GBF078300241

Release date of the album this recording appears on

1997-01-01

CopyrightID (CopyrightChains transaction hash)

0x63297a4d5cae2e432123ca0c54d4871132b322407ff86e61d71a9d08f0b04650

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-31T15:59:18Z

Bitcoin block

960427

Canonical record hash

sha256:da0cb49d06093565a1309fd752dddf93a328140266157384db5920bdf167d9a0

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC GBF078300241

What this proof establishes

This recording was released in 1997, before generative AI. ProofProfile's catalogue derives from the pre-2022 AcousticBrainz and MusicBrainz source corpus, and 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.