Bappi Aparesh Lahiri (born Alokesh Aparesh Lahiri; 27 November 1952 – 15 February 2022), also known as Bappi Da, was an Indian singer, composer and record producer. He popularised the use of synthesis
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 0x1aaac4708659d1f719df1b787f693ec1f99bc1b34113a497022fc256066a503c. 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/4096cc02-8c34-4eb0-b151-f657ad16d8d3.json and https://artists.proofprofile.net/proofs/artist/4096cc02-8c34-4eb0-b151-f657ad16d8d3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Swami Keno Asami (Original Motion Picture Soundtrack)
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 0x320c06e6b2c406dcea16cea563edae8769b7e508bcbf7b7115fd3f687ddedc76. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM4TW2419488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96197e1e49e65cbb9013419ae3a772a2661570e55c23f4dafef7d9d0eca3465d. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM4TW2419490.
Humein Tumse Pyar Ho Gaya Chupke Chupke (Original Motion Picture Soundtrack)
Agnichakra (Original Motion Picture Soundtrack)
Guru Mahaguru (Original Motion Picture Soundtrack)
Saptasur (Original Motion Picture Soundtrack)
Dil Ka Doctor (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4db9b766bb0cdc185df59fe6e963bc9f06c3f5f87d7123ef50a6f7038c553a6d. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US6XT1700404.
Mumbai Can Dance Saalaa (Original Motion Picture Soundtrack)
Yoddha ( Original Motion Picture Soundtrack) (Bhojpuri)
Afssana Pyar Ka - Bengali (Original Motion Picture Soundtrack)
Samadhi (Original Motion Picture Soundtrack)
Swabhoomi (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8907ac79d22d323fc25541d92bbdbbe42098d0dba6bc33c13a45397a32df184a. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/INS181300051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f1b356862054d177136956aefdabc203f7baf25b490af4dc711bfb3bc036461. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/INS181300052.
It's Rocking Dard-e-Disco (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f9473158d39e72c2650ce44d6ea53a22e3341fc81f2d5c333ef31a0f3db6919. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/INS931002001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26d04d291810e739906c32321ffc9e10acd5a879eb0068d8c68e37a6ea8ea53f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/INS181006181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac129b7d49ca3cd045e3f5dddaaf63a1673d6e766024c06b98dbb200618c7d56. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/INS181006182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ef8b688f812293572966007cc817172e5d011160ab8dd3987f924b963d331e4. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/INS181006183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7532d0c8cbacf66354599fcce8390373966827cd772563d8e70740b573a71d52. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/INS181006184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa863d9a08d0234dfb36218df74c8478da1ba40e07327cc1a46f0aab0dde4804. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/INS181006185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d1ea15e27c7f984974e63ed09bc36819255b482bec7e2dd1101e8d38b691d7d. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/INS181006186.
Chirosakha He (Original Motion Picture Soundtrack)
Aman Ke Farishtey (Original Motion Picture Soundtrack)
Qaidi (Original Motion Picture Soundtrack)
Phool Aur Pathor (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a50f1df4969b10e4cd8d1ea78787f55fe423cce2aa7b489faea0560f6032873. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/INV110200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc2a6d22d3fbddcd050e04564c2aefb6cd8ab47821b43597f18c2f9891f253ed. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/INV110200006.
Ami Je Prem (Original Motion Picture Soundtrack)
Tomay Pabo Bole (Original Motion Picture Soundtrack)
Sei To Abar Kachhe Ele (Original Motion Picture Soundtrack)
Kohraam (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c0bcd855125c8a97044b4fcd93b3b6a92a479ae7de189b656f2178e8e64d61d. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/INS180241137.