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 0xc7c3b9aa6fb26e4342bcacff6e627d748a4ad2e5b5c4797547bcfc35645b1435. 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/e7cdede5-ac8a-4335-b9b3-c152ed965ae5.json and https://artists.proofprofile.net/proofs/artist/e7cdede5-ac8a-4335-b9b3-c152ed965ae5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x23747649d3a6f668aa58857c4cb48f9206ba8adb6f76157cd80fa5239899d93a. 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/QZHN41980425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d3bb2531d89db80bb479c90b7878727056d14e376d0763f4d09ef5c6f45b2a8. 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/QZHN41980427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3fe4e2ce0f7101ca1f4fc7e66bf09d5a86eb010bb04100a932109597f55141c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZHN41980428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0e741562ce1e1596be10888f57b9e37afabe82ccde3bf6cd938216c7942f017. 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/QZHN41980429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bd8af64562f7e55bb26e51275794926ca933df763149835c6401b6c4138c4b9. 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/QZHN41980430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad273c43575be78255b87183073f297d1833c632d3b09a35a87bb18380757509. 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/QZHN41980433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07fc76ca9e4152bf6da3558182eb8dde328d847f7ab0f37bdf3df8153ef693d7. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZ5FN2072649.
RAP BHOOSHANAM COCHIN BROTHERS PVT. LTD.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaadd227dde9cd1d9fa9e86c01b98b293227049ec8f9e591d12623226902cf660. 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/QZ5FN2273472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab0522060a5b23cfdd6acebe6b418e6cf3b6629ef5e0aec328ed3d6bc8ae3677. 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/QZ5FN2273476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9c660dfda4ea0d492ce4c7d8808237ea07b51d519d471df36a62675c3543b24. 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/QZ5FN2273482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fe54b67181be921785531d87e0ba436002ee51f0f9d711ed887caaa72d3fa79. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-21T23:25:37Z), 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/QM6P42312589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ff78fd6a8366fed2bd29874fddbac205f71cea6c31f7206181fbf91b72a9043. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/INUM72302083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33f6513b17114aa13f9d1c42f3528c24dd19c1ff36cf977edf448692db2d5a48. 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/QZHN32470447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6702dc45190ddd2c1640eb55add02d12fc7b86a3f7e6f5db59c6eadd2808ecb. 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/QM6P42312703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0ac304ad0c8999dddbd60bac5c8ee4c2a47c921df33bb57c29586afa00708b2. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM6P42312717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c86cc73e61ca3ebaa3490a79d3c204d8cb9304b559e764d1f86d8ef24c8ee97. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/INUM72401566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b75fae58b796e3be43c5122967e73c07bea5c2f5aced3ec36cf51b7b2764f2d. 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/CA5KR2118253.