Tantra (; ) is an esoteric yogic tradition that developed in the Indian subcontinent, beginning in the middle of the 1st millennium CE, initially within Shaivism and Shaktism, and subsequently in Maha
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 0xe1f9f8f59b84ce05ba855d1b4dd04d5e9b3109ab7784d04b6be74eea96cdd331. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dd6cfbdf-a070-40f4-b565-80f7b4f3b33e.json and https://artists.proofprofile.net/proofs/artist/dd6cfbdf-a070-40f4-b565-80f7b4f3b33e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).