Requiem en ré mineur, K. 626, Introitus: Requiem

Recording identifiers

ISRC

CAJ721572201

Release date of the album this recording appears on

2002-01-01

CopyrightID (CopyrightChains transaction hash)

0x343ee3e677013d84b1fde8ec2c4e133c5701d08bd1264d5d892cc70eae95a3f9

Copyright registration time

2026-07-07T00:54:57+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-08T03:20:19Z

Bitcoin block

957118

Canonical record hash

sha256:68ada3fdfbb9958d248828ad78d7866574d1c171eae47c35781ff1151ca1000d

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC CAJ721572201

What this proof establishes

This recording was released in 2002, 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.