Sestra Margit

Recording identifiers

ISRC

CZA167900138

Release date of the album this recording appears on

1979

CopyrightID (CopyrightChains transaction hash)

0x57516672767176a52043a4c77c123f400d2e446cc07f117a0610473ee3f37820

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-08-01T02:22:04Z

Bitcoin block

960497

Canonical record hash

sha256:ef613a5151043f630b13f8dd7b2cc1b6687806ac61d584397644444ba0403db1

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC CZA167900138

What this proof establishes

This recording was released in 1979, 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.