The Gundecha Brothers are Indian classical singers of the dhrupad genre of the Dagar vani. From 1985 to 2019 the duo consisted of brothers Umakant Gundecha and Ramakant Gundecha and were awarded the 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa852c7b8918663f78c77cb046efc74d2154fa8638cb512d7db30d007ec206f91. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6baf1850-8665-4b1e-9d9c-03d4be892b7d.json and https://artists.proofprofile.net/proofs/artist/6baf1850-8665-4b1e-9d9c-03d4be892b7d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Ancestral Voices: A Dhrupad Recital (Ragas Yaman & Charukeshi)
THE WORLD ROOTS MUSIC LIBRARY: 北インド古典声楽ドゥルパド～グランデーチャー・ブラザーズ
Morning Dew - Raga Komal Rishabh Asawari
Night Prayer (Dhrupad Singing from North India)