Baul Shah Abdul Karim (; 15 February 1916 – 12 September 2009) was a Bangladeshi Baul musician and philosopher. Widely regarded as one of the greatest Baul musicians, he was called Baul Samrat (The Ba
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 0x6d9856b5a61e0edbf9039b4448c1554d569e9ce3d36ad23d101f9e9f28956585. 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/d752e597-4e98-4edf-b3e4-5af5ecbc1a6e.json and https://artists.proofprofile.net/proofs/artist/d752e597-4e98-4edf-b3e4-5af5ecbc1a6e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).