Shubha may refer to: Shubha (Arabic), doubt, obscurity, suspicion or mis-grounded conceit Shubha (name), a Hindu given name Shubha (film), a 2006 Bangladeshi film Shubha (actress), Indian film act
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 0xdcff50dec80c7fdf62e4e67d9ee351140b3f22393820e88a53a83fad92c30c5f. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8d2d2d99-0595-4052-9f11-2e2ee6964eb7.json and https://artists.proofprofile.net/proofs/artist/8d2d2d99-0595-4052-9f11-2e2ee6964eb7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).