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 0xf368812ea37db0e74aa3f3c411a2e3b88082270814629ab86cd8bdb9e5f69a88. Chain 2 (Bitcoin): anchored in block 953791 (2026-06-15T13:40:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/de067cdc-8a73-41df-a76e-6e432b597f09.json and https://artists.proofprofile.net/proofs/artist/de067cdc-8a73-41df-a76e-6e432b597f09.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Ashi Kashi Devachi Karni Sai Palkhichi Bhajan - Sai Baba Bhajan Sai Bhajan Marathi
Gavlani Farach Sunder Khoop Gajleli Manala Aavadnari
Khanderayachya Lagnala Banu Navri Natali
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 0x058a2b1250e284087776c42849a9554075354a04865b0c3d5116d67f890dd3ba. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DGA052244804 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5eb4219d55b0c31197e387c9479a653f18ef76c7d621c5862345e136fd53b0f. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/INW162301923 — a six-check JSON result.
Saibabachi Aika Kahani ( Saibabachi Gaani )
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x007a60f32d97bfffe7f556cb4b236943d6b04936452b84d6f04ba4ba2b76c5db. 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/INW162302253 — a six-check JSON result.
Tu Dattaguru Mahasant ( Shri Dattaguru Bhakti Geete )
Shree Mahalakshmi Vrat Katha - Marathi Katha
Katha Sati Anusayachee Datt Charitra, Pt. 2
Dimdi Tuntunn Vaghyach Mandin Jagaran Khandobach
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7c1599d52048c2d5ff1f7a5a5ee668d7e35893cfe8752868b6fad999eb22351. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/INW162300570 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18e279c2e58b82aefc8bd98354d851888d3a502f14dd72c344c48c191efbf38d. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T00:07:05Z), 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/INW162300571 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2fb7f925fd2009b38404f17c5beb5846363fe06064bdc7feb5df17893a9db74. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/INW162300572 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbabce7f7e9f32d747386552fbb284cb3278d494cbd236b86b045124640883e24. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/INW162300573 — a six-check JSON result.
Ambacha Chabina Tuljabhavani Bhaktigeete
Kalubai Lakshmi Mazya Gharchi ( Kalubaidevi Gani )
Dongar Garjala Kalubaicha ( Kalubaidevi Gani )
Vanicha Gad Lay Avghad ( Saptshringidevi Gane )
Dongar Hirvagaar Kalu Tujha (KalubaiDevi Gaani )
VaghaSarkhi Saptashrungi Yete Dhaoun ( Saptashrungi Devi Songs )
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5eb4219d55b0c31197e387c9479a653f18ef76c7d621c5862345e136fd53b0f. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/INW162301923 — a six-check JSON result.
Sukh Lagu De Gharala Yein Tuljapurala ( Ambabai Gani)
Kay Bai Sangu Ambach Natan ( Ambabai Gani)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd62622f09b8bff6411b2b25ad2b8ff91c0ca09fd6d0d18bc6e2b28ce6b963f42. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/INW162301925 — a six-check JSON result.