Simbo is an island in Western Province, Solomon Islands. It was known to early Europeans as Eddystone Island. The islanders have their unique language spoken nowhere else. Geography Simbo is actually
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb390c67ec72247edc63984d4895360308cc53d1c0740018f58762197fb90cff9. Chain 2 (Bitcoin): anchored in block 954603 (2026-06-20T21:47:54Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c09397cc-266a-456e-b1a1-367f55620d0c.json and https://artists.proofprofile.net/proofs/artist/c09397cc-266a-456e-b1a1-367f55620d0c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).