Eržika
Recording by Hana Ulrychova.
Recording identifiers
- ISRC
- CZA167400427
- CopyrightID (CopyrightChains transaction hash)
- 0x3b2eb601cb24bc31a930ccb9865340f0f4e61518181933ad835f7eb528ce1bd3
OpenTimestamps proof evidence
- Bitcoin-attested timestamp
- 2026-07-31T18:48:12Z
- Bitcoin block
- 960448
- Canonical record hash
- sha256:d924ad1f3517b0be39d6a71b5e9f585b49cea5ef865c70e3109e77de7fb1bf9e
What this proof establishes
This recording belongs to ProofProfile's historical evidence base derived from the pre-2022 AcousticBrainz and MusicBrainz corpus. 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.