Requiem, Op. 9: Introit

Recording identifiers

ISRC

USASX0616901

Release date of the album this recording appears on

1995-01-01

CopyrightID (CopyrightChains transaction hash)

0x81ac0f8fe0c7cba55f2d23e39a296bd3028ee21a7b7db218f57fc9ea2767cc14

Copyright registration time

2026-07-29T22:14:20+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-29T22:48:59Z

Bitcoin block

960160

Canonical record hash

sha256:61c4923f53328fb93553dd41cfe9d1d82dc7671d9137ef1df594db8fd6a07256

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC USASX0616901

What this proof establishes

This recording was released in 1995, 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.