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 0x7bc1eec0f84564f760fdce15c7d970bcf8294c202f564eec29e0beb1db622c76. 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/feefc101-0fc6-4512-a0ff-bd0a9bc2518d.json and https://artists.proofprofile.net/proofs/artist/feefc101-0fc6-4512-a0ff-bd0a9bc2518d.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 0xcf3c20dad1a9f1c33ae62e892c4b3d1c8ace60c65c4932cd1970131001ee0e5a. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/ES71G2054929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x525d7cfd9b99e5bbc33a9961ac2fabed54ab53e6b7e9cb1f0927f8725acf82f0. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/ES71G2054931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd4c9fb7f49db7856d34443a8512b7a56cd3a1ab179767b571b0b84caeb4dbef. Chain 2 (Bitcoin): anchored in block 958417 (2026-07-17T12:56:50Z), 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/ES71G2054935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aca866301e84a56db063933e5529a106ae69610047bd3dc32e77159f62d4fc7. 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/TCADR1853354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fbf553eb770e45e0a9ad06b9a979ff9aac2d97ff6afc398277f5f341c5465a0. 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/US7VG1854242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee6eaff7b3232650f6532b759e60dfa37da3dbf79f09b8a4a847ac943d32f577. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/ESA011842281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3a90d8e7c01266d75f62af795744fa65a91a2ab0d31aa8e41751bf176a9fff7. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/ES71G2130527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3a90d8e7c01266d75f62af795744fa65a91a2ab0d31aa8e41751bf176a9fff7. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/ES71G2130527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaee3ce20b7d56b3aa822dcd8631fc2af324f6f3308084f77a645ddabbdef7cf9. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TCAFP2170748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf7cee88a6670daa49149dc29fc72e8586e84d61a51b4ca11a0ba38956b83946. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TCAFP2170752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97f3852218ca32515f6fc6d80761d5b0fbaa08a3bf79c60da6f590b0cd077b74. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAFP2170755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a040f0200981c53fc10e5a7c94041d7422ef08535af502a94872ce51ef153de. 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/TCAFP2170763.
Nossa Pulunguza (DJ Flaton Fox Afro kizomba)
Nossa Pulunguza - DJ Flaton Fox Afro kizomba
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac28b6570bf4f0360fe2c45ea96b4ae6efe06721ac309f5651fb29ac4c0b15d8. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/DEH742406945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b3b3e5db27dde20e1a1d784c1fe64f6890e8563467769bdb0ea4130a4ec735b. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/ES71G2409219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bc0838d388a77640ab81162273906385c7d1f866aa8560e5cd0ad341ec61148. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/ES71G2426627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40feb9c28afea62753c7682440716e4ee5f6f4e348f2e34c015dab3cd4b5e31e. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T11:08:30Z), 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/ES71G2507238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8262c5347313952ae8d0d70cd7ff6e7dc38b953b8699b2afcd345771b29f692a. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/TCADQ1848134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4650252d791c1eccbdd83bfbd8e338efe096278c4d8289391ba794bd90c61d6. 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/QM6N21995934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96dd8137f0a601301284b7ce319b769f37ae4e014d03b9843b06c8e0eedd25d3. 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/USHM82432760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8262c5347313952ae8d0d70cd7ff6e7dc38b953b8699b2afcd345771b29f692a. 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/TCADQ1848134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc01fe426eb07594cabc939f215d01aab8e4c3963b95aca4964adfc2513f1a1ce. 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/TCADT1839570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x072d42d05721780da4977f1b00dc2cf7da2d13ab42d1f1717a3586a252f1b35a. 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/US92U1900982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4de1ed737095ff4a00e1d832a4299618a03fcfe19a85c2ec33957b081f4141a3. 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/USHM21975626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37eee3845527f35aae1c1e0fdaa99c9190a6c313cf449ba765adb6cba6e6780b. 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/QMFME1990798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x632bc1a4763bad56a5db77fbbfff6185d9d5d57d24848e145f3150f77ae194e2. 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/ES71G1816065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5affb34b8760eaa6d97b08930398196b70fa9c736c2571eb68b4a7a094a471ec. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/QM4TX1988943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f6720678fe3ae09bdd529897d58c35aa0a409cea4102d8d284801c488606b8a. 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/QZH5E2343758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48fbcb36912dfc70ac9795b397b1d6fda63b22193879698b2b169175315d6b16. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/QZW9L2453386.