Private Domain is an American pop/rock band. The band originated in San Diego, USA in 1985 (see 1985 in music). The band's members are songwriter Paul Shaffer (vocals; not to be confused with Paul Sha
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x286b872dfaf9268fcc102a3f1874aa58fc36bdbfac29a57dc9eb92ce534ec1f1. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/df9f7f2b-d5e9-44f0-b2b8-8e9e7233529f.json and https://artists.proofprofile.net/proofs/artist/df9f7f2b-d5e9-44f0-b2b8-8e9e7233529f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).