Sanders may refer to: People Sanders (surname) Sanders Anne Laubenthal (1943–2002), American writer Sanders Shiver (born 1955), former US National Football League player Sanders, a variation of S
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 0xa7709d6be55ec995145d9947d213b7da57bdb017e506016fce967a9b54444e43. Chain 2 (Bitcoin): anchored in block 954647 (2026-06-21T04:36:58Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d6b92508-e90d-47e3-ab89-2aca6555b107.json and https://artists.proofprofile.net/proofs/artist/d6b92508-e90d-47e3-ab89-2aca6555b107.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).