Richard Sears may refer to: Richard Warren Sears (1863–1914), founder of Sears, Roebuck and Co. Richard Sears (pilgrim) (1595–1676), early settler of Yarmouth, Cape Cod, Massachusetts Richard Sears (
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 0x7c93b5d5833f5e0afdf4006518151ce9f61d74a13a4b1e8fd15591a33b300111. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5edb029a-a7e0-4c3f-b9a9-bd4f8583839a.json and https://artists.proofprofile.net/proofs/artist/5edb029a-a7e0-4c3f-b9a9-bd4f8583839a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).