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 0xed7a23df04fa323e3d0eb3c80feb2cef45ef3dc20e8759db24efdbd8e55c6025. 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/2c45b42f-2cab-44d4-be59-e05b557f723b.json and https://artists.proofprofile.net/proofs/artist/2c45b42f-2cab-44d4-be59-e05b557f723b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Nur Zikrullah, Vol. 9: Alunan Zikir Al-Ma'Thurat Kubro & Sughro
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 0x37cc136554878992c795af211c9ab4c505ca2c82c9be4445b12b7402bff10ca9. 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/MYHO11400091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c025a932480ba4b93a75d3466b4e2000be134b051c4f3d49f0a2051641a52e7. 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/MYHO11400092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9e3fe856eb78caac125c6d66d72c02c7fd016aff1e1852b56c33471a1369a35. 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/MYHO11400093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ccc384374fce67ea8def9b7e4e5adcd3cd8971b02cd5b72c762f501b6a6a99a. 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/MYHO11400094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04949bec6004bac130ee264c7bb45c62fb12f466fb0392d815546f1700739c11. 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/MYHO11400095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0de2680b1d5463207c5bfd67a6c9d1edd1c2b0b750e4333373353532a6a31d69. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/MYHO11400096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8229e93b680e0225f512f234d4257c5a02ab9ef0cb45975dc046f827c22125c1. 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/MYHO11400099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55999010d447ab29921341b7fbe0f3ad4c354409c9f3bde0ccb2154ee23c74f9. 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/MYHO11400100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e88810e3336966affbdae9d177ad6fc3b75ae7269b414ddd748e52bde173725. 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/MYHO11400101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x169ea7108fcf2f0b3ab9c3e3ed1976134a1efeb6f836015354745c7ae155def8. 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/MYHO11400102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ba433452f16a044970520ff17a32f462c735367752033787125010237c1121a. 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/MYHO11400103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58009307eadbb44b62ad92e5b71672eabd8fda6a3569f9a19a9aef01949220a6. 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/MYHO11400104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1a64f3a732e31fc12536449d66b281803c9b6988ebf676d4159799512b084d8. 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/MYHO11400105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15b30e5ff6babfa10663c205ee8e5a3328a9f2ad5b66b9a907b2171ce3c2c58b. 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/MYHO11400106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47042d00bef872c7644d3fba0a08052b4a12396b60dd1e441295b1dff34f06e7. 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/MYHO11400107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11f41f337ee9c1470567a94fce443dd4dc16a52f71ce60cc5b34447267fac12e. 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/MYHO11400108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c336db90c3b30245629424426d8a3a1fa29504e1bdea4ec5e05a48250587fd1. 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/MYHO11400109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec8ea81b4beaffa2da74c26ab3261846714738d03344a3328130db5f64749ddd. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T18:47:29Z), 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/MYHO11400130.