Doufej

Recording identifiers

ISRC

CZA259800113

Release date of the album this recording appears on

2018-05-11

CopyrightID (CopyrightChains transaction hash)

0xe138012c0e4468c2dd2cfaf608c8b30bbc8efab08f2dee05c428a9ff482b694c

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-31T05:23:41Z

Bitcoin block

960349

Canonical record hash

sha256:760a4805cada13d75e4888eb9ebb662a7b0bf5c4bb18b61fe54c31c007c95321

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC CZA259800113

What this proof establishes

This recording was released in 2018, 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.