Jenufa, ACT ONE: To bude pekná svagrina (Laca/Miller/Jenufa/Grandmother)

Recording identifiers

ISRC

GBAYC9502037

Release date of the album this recording appears on

1970

CopyrightID (CopyrightChains transaction hash)

0x69aad4a2c1406e95367306dc653d61e67a0ec5eca245683dda9286f5cdae5262

Copyright registration time

2026-07-07T19:08:09+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-08T03:22:41Z

Bitcoin block

957120

Canonical record hash

sha256:2de7ccfd815aa14798cfd00fa7b9e4a6b8544bb3f7121b7c5b924a904e5a6ac0

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC GBAYC9502037

What this proof establishes

This recording was released in 1970, 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.