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 0xea90b1e57269d46a772b454e3dcfef051b0246209a9bb13307de3d969a38087e. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2abc0136-5900-44ef-8953-748a2dc3b0a9.json and https://artists.proofprofile.net/proofs/artist/2abc0136-5900-44ef-8953-748a2dc3b0a9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Loke Bole , Bolere Ghar Bari Bhala Naye Amar
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bfd60b8997b25058d7ad77827c4c076ea147d24c0917c5dfe50fadc674b03c0. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USCGH1896137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2386cb1deb1abef5da4ebc5976d9506e06b0f171b5874f30be5d12d6bcdb9607. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USCGH1896138.
Nisha Lagilo Re, Banka Dui Noyone Nisha Lagilo Re
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe07625e48274d5a0becdbf99a6a52f64615334dc904acc324b5e7a1ac801cca6. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USCGH1896139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48390afc8708cab31eeeef604a8069f2a65029d3ce65974df6ecf3ab94067e57. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USCGH1896140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe70cf22b6a901e7a1d0035ae131f4fb7502131dc64db8e6a0d3160e414485ec. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:45:45Z), 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/USCGH1896141.
Ahare Sonali Bondhu Shuniye Ja Mor Kotha
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x759668633a6b04ecd3e565265ed028f123dcafbc287119a8f97d844c751579f3. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USCGH1896142.
Agoon Lagiya Dilo Kuney, Hason Rajar Mone
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ae2feb2ad48840d8c64f2dde5f5bfd72eff2847e09e80b60dd4828db5888298. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USCGH1896143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x959a75f8dce286f726752d62cb18f01cce81d2773e2e9bbdfa6f9affb6962349. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:07:38Z), 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/USCGH1896144.
Hason Rajay Koy, Ami Kichu Noy Re Ami Kichu Noy
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9778c4f9f0f299991d20e4e133554dbb94d38792704733dbdbec1713cda7fcd3. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USCGH1896145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x546b742eec38b71f531c7f1df47772ab3bd960780b3ae2c3120c7a6cc4f1193f. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USCGH1896146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a675f06b659a7a32d97c2ff986820766b95156318c7006e2aa1e1ed48c335be. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USCGH1896147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbac3516101fa22d7fed99548d135b182d44fd0d1cb27495d8d1255fee251e5e2. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USCGH1896148.
Ami Kori Re Mana, O Premikey Gaan Amar Shunbena
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4008e8a72a8826b8c8e71b1007c1973d5d19aa6e0c2827e1a3bce90f11b312e5. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USCGH1896149.