Mass No. 13 in C Major, K. 262 "Missa longa": I. Kyrie

Recording identifiers

ISRC

HKI192045701

Release date of the album this recording appears on

2021-09-24

CopyrightID (CopyrightChains transaction hash)

0xb1b3eb982c9fa8e7fe00718cf6b51b79cbf2b91d5891a7f10b2227a9859f401e

Copyright registration time

2026-07-08T00:10:44+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-08T03:22:41Z

Bitcoin block

957120

Canonical record hash

sha256:eda6a605eb247766ef9c5d8fed2fcda004366179da63b42d2a93b197efc5df10

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC HKI192045701

What this proof establishes

This recording was released in 2021, 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.