Del Toro may refer to: Del Toro (surname) Del Toro Lake, a lake situated in southern Chile Del Toro River San Giovanni del Toro, an eleventh-century church in Ravello, Italy Bocas del Toro Province,
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 0xeeadf80c5a8fe3f26a2afcf139525eeb40d21422f5fb5d4399b41ee04f3503d3. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5762aceb-3043-4d30-97d5-7498f73e6583.json and https://artists.proofprofile.net/proofs/artist/5762aceb-3043-4d30-97d5-7498f73e6583.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).