thumb|The thief escaping from the tiger Tapta (/tap-taa/) is a character in Meitei folklore of Ancient Manipur. It is a creature described by a mother's imagination to her child, to stop their cry. E
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 0x0c86e188c605ab2cede70003af7b31b70bb69a3e253d664660da84e2c27bdfed. Chain 2 (Bitcoin): anchored in block 954069 (2026-06-17T08:30:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7a38fc9b-ba0b-4159-b660-769d6eb7295f.json and https://artists.proofprofile.net/proofs/artist/7a38fc9b-ba0b-4159-b660-769d6eb7295f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).