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 0xd126e20125e8545762650f7a1f622aaf5b2bbbceaca0e26845e2699f71ed1ea3. Chain 2 (Bitcoin): anchored in block 953696 (2026-06-14T21:45:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/72ce2520-c7d2-4b21-991c-1ab2d8823412.json and https://artists.proofprofile.net/proofs/artist/72ce2520-c7d2-4b21-991c-1ab2d8823412.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Nana Ranger Nazrulgeeti-Satinath Mukherjee
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 0xa4bad62f22ada68754b4f1c0b5ed194026e2c23fb9ec06d56f36ed73dc2512c7. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/INI112200733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd25ded8393b39eafe97ff0e0f57165612a95c7c9cdc600d9f2e70f5b5b315862. Chain 2 (Bitcoin): anchored in block 960173 (2026-07-30T00:11:40Z), 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/INI112200735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bd7d41cc7a009667fc1dbef86a4de8543253e170e104ecdcbff4f1716d96476. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/INI112200699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe65b0c5840fe785e5564a82c0d4560f5aed24fdc98b38b539a925a89c7252f01. Chain 2 (Bitcoin): anchored in block 960355 (2026-07-31T05:49:18Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/INI112200701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c1d4f527c89982830a860223188850d279db70e26b303535665e0183725eea6. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/INI112200702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00d16a41fcf8fb594a8d7739c3d851057e1ef560c8d663b647695bf953be9184. 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/INI112200704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e5757e02844a4c184e46b839484053f9956036d172dc7ec5fffc43d36ea642e. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/INI112200709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71f869844064547472771e0f0919a44dcbbe3f4c8806f94a173aea3ef47e95a1. 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/INI112200710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc067c1d696dd90000501c05fe78c3143e90b113bfa166253bb0a905ab6df63e5. 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/INI112200711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d906290446f1932ab31a77ebd508b16a9ec02c1ea2f38cd12c3abfc517e8b21. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/INI112200712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92a780580059e5787a3c3fb39c04b32cf8a75b2af39c7336782fbee8cd753e75. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/INI112200713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4404db2986b0acc3c75d5e23373515911e498f8bd39f83af2b5228c7047bbdca. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/INI112200714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b19cda8650f47a13b903c23ee2e62f019e92f75e9796ac3407e1353057416ef. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/INI112200715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ce74451ac516674dfe1fa4d25a7dbf40aeb6bd48569a1b2894bd80afa86d1c7. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/INI112200716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7064469290dffbd8c161dc8a6e1c81771456bae07679f5d55f112791a7ba77b9. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/INI112200717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a0840f4457b149b2102f2bc02d726edefef8ed49e3c241e338f78a300c1a2de. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/INI112200718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a6926dd3dedb56262be91fdf66c6446b1d1ae066483e48c2a61de569cfd89d3. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/INI112200719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf08ce94257b9f97934e79e8f744f0c239cc05e46c4082bd90d21eda5de6b8d80. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/INI112200720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc84ead579add7124e323f033b7e725d36aef93983bb858e542a56e882b1b907f. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/INI112200721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce8c4f6f5aa6ecd21fb732d894bff5da7cb8858076f878f485cda3e856d07913. 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/INI111167412.
Aamay Nahe Go Bhalobaso Mor Gaan (with Narration)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09f6c84292c61b8385fc85a2043624a746d9e26b71efb6bbc46ca9307728f587. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/INH101202720.
Aadhunik Bangla Gaan - Satinath Mukhyopadhyay
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaedf255aea33d7f2d5c3db39d899b417db3cc51035334f6dc58f8e75e3a9337. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/INV118700064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b5e895d683c378d71fbcd79a877a0f68ea8dbae6f18eda8d7df374205723803. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/INH100367040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x529e597ab36304ebaedfe721c0c167f5bb8e1de826602fbe764c8848b269da6f. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/INH109920760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eedb3efcbc60c79a333d1c1ebdbf0c408091054b7d49cbdae79f624fd690500. 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/INH109920800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1214ed65234e2d2736592729b85c12a99c1f1f84a4cc727bff38464fdecf46b6. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/INH109519430.
Belun Pahar (Murder Mystery) [Bengali Novel]
Abhabito - By Dr. Arun Kumar Dutta (Sruti Natak) [Bengali Novel]
Badla - By Himangshu Sarkar (Sruti Natak) [Bengali Novel]
Rupoli Rakta - By Anish Deb (Shruti Natak) [Bengali Story]
Raktamukhi Nila - By Saradindu Bandopadhyay (Shruti Natak) [Bengali Story]
Philomel Cottage: Rakhe Hari Mare Ke - By Agatha Christie (Shruti Natak) [Bengali Story]
Nila - By Kaberi Roy Choudhury (Shruti Natak) [Bengali Story]
Maadhu - By Sirshendu Mukhopadhyay (Shruti Natak) [Bengali Story]
Khooni Toirir Akhra - By Robert Block (Shruti Natak) [Bengali Story]
Khoon Khoon Khela - By Asit Moitra (Shruti Natak) [Bengali Story]
Kalo Haat - By Nihar Ranjan Gupta (Shruti Natak) [Bengali Story]
Kalo Bagh - By Manoranjan Dey (Shruti Natak) [Bengali Story]
Jangale Ekti Ratri - By Hari Narayan Biswas (Shruti Natak) [Bengali Story]