Debabrata Biswas (also known as George Biswas or George-da; 22 August 1911 – 18 August 1980) was an Indian vocalist known for his interpretation of Rabindra Sangeet, a genre of music composed by Rabin
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 0xa75580cb16237368e781b8daa2fcdbf70395e3e3585614bfdbaa55de59273437. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/05a47ded-52ed-4477-b8b1-363fa5c84800.json and https://artists.proofprofile.net/proofs/artist/05a47ded-52ed-4477-b8b1-363fa5c84800.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Tomar Pujar Chhaley - Spiritual Songs Of Rabindranath Tagore
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp 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 0x11e70a4b96564f6bcd831a4ef512ccca1eedc003a82fb2d9bce210ea211dcdec. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/INH119411420 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9957dfa4964c693f6840cedfeb8c95c4a46ba16ddddee466b217dbe51f1e4f3e. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/INH119410140 — a six-check JSON result.
Purano Sei Diner Katha - Kabi Gurur Gaane Rabindra Sangeet
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x676a3bd8279fef1ef78d3cfee13dee10f9637eb550a15e52efa04089953c302f. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/INH119410010 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x411287f8ac7b0f36a1826b8446ac3a0cbc03139a9f01cdeb351745cd33f5e2fa. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/INH119411370 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8250f8747bb923fb64b4f9319560a0140910d6d9244fb134647ad65dbe130284. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/INH119411450 — a six-check JSON result.
Tomar Ashime Pran Mon Loye - Kabi Gurur Gaane Debabrata Biswas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98bb825cad146c2436d42d0d113c3efcb90d37828dfd2ec87e97f10d2c269983. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/INH119410040 — a six-check JSON result.
Amar Hiyaar Majhe - Hits of Debabrata Biswas
Pran Bhoriye Trisha Horiye - Debabrata Biswas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0c84180f0fbb3033d21d49bdf1c38fa444a39ed20f6727505b6a8e1ce244dd5. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/INH119411550 — a six-check JSON result.
Antaranga Georgeda (Tagore Songs) Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa30161702f079208df6e380207b4f776b71a7a6dccaddb3b4c6af80d432aabac. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMFME2000786 — a six-check JSON result.
Ekla Pathe Debabrata Biswas Tagore Songs
Sanchayan Akashbhara Surja Tara Debabrata
The Classic Series - Debabrata Biswas Special
Aapan Praner Dhan - Debabrata Biswas, Vol. 1 and Vol.2
Ere Bhikhari Sajaye Ki Rango Tumi Korile
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65883537a774a5b56925c2a66caf0d6705dd0d8aa82d7e9ec4683b5886b9c0ed. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/INP832100380 — a six-check JSON result.