Rāmtanu Panday ( – 26 April 1589), popularly referred to as Mian Tānsen (), or Sangeet Samrāt (), was a Hindustani classical musician. Born into a Hindu Gaur Brahmin family in Gwalior, he learnt and p
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 0xbd6dcfddd9c7a272b2e916a288af33b2c76bfa4565f9a75495396e877c1ee0f1. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fd322b13-939b-438f-b55b-75be3c3230c5.json and https://artists.proofprofile.net/proofs/artist/fd322b13-939b-438f-b55b-75be3c3230c5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).