Jan Uuspõld (born 14 December 1973)Uuspõld.ee Retrieved 7 May 2016. is an Estonian stage, television, radio and film actor and musician. Early life and music career Jan Uuspõld was born in Tallinn, t
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 0x7c2357553579b0fb5d20ccba422f558944449350d7dc49f2e76516cd73ef3fd2. 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/c1530e53-2ec4-4dce-8b90-6010ef69dbde.json and https://artists.proofprofile.net/proofs/artist/c1530e53-2ec4-4dce-8b90-6010ef69dbde.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).