Rekviem

Recording identifiers

ISRC

CZA166700019

Release date of the album this recording appears on

2015-10-30

CopyrightID (CopyrightChains transaction hash)

0xecc9c76d77e5abb2b4fedc120a2fbdb26b8d31395f3a33e0b7fb2dd1961b4fb4

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-31T09:50:11Z

Bitcoin block

960381

Canonical record hash

sha256:9db1d80b6655a97d0e50f8f9bc6eb781a8eedbb72fb30a4c76b080931e957def

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC CZA166700019

What this proof establishes

This recording was released in 2015, 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.