Speil
Recording by Halvdan Sivertsen.
Recording identifiers
- ISRC
- NOPLB0402110
- CopyrightID (CopyrightChains transaction hash)
- 0x94940d0c5b3e5dc7a9b3f0b8d1336f410f5c15b02db54988d3fcdb801990fbd9
OpenTimestamps proof evidence
- Bitcoin-attested timestamp
- 2026-07-30T12:06:10Z
- Bitcoin block
- 960254
- Canonical record hash
- sha256:36a7814b5320bdbdd1c22400a1642e0e3a13fe7e81c6f7f8564cbef689f758bc
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.