Nicole may refer to: People Nicole (name) Nicole (American singer) (born 1958), a contestant in season 3 of the American The X Factor Nicole (Chilean singer) (born 1977) Nicole (German singer)
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 0x5ae1ab5aa1496dd10753e2392f5d604bfdce97a187dbab7705c45542a54271de. Chain 2 (Bitcoin): anchored in block 953714 (2026-06-15T00:43:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/830c5a79-b03e-442c-a717-80900722528a.json and https://artists.proofprofile.net/proofs/artist/830c5a79-b03e-442c-a717-80900722528a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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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 0x7394858ca1a8f88abd138d4e0a068e9c6bb04c42226fba511d783864079bede5. 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/KRA382321958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3569628f74e17d3a8be4e452b73e31bf0de1096a9726e5957344e4de3a4ae882. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/KRA382403570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96e52c1768dfbe04e047864b045fa801e9adfe9b7e06f53fb2e77012409ccf99. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/KRA382403571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74396a99b56ad23536cd36d0a74019fb9f22b691947a90328264c1d302f0c5b4. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/JPN902302940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eb9913981c023c2d594110e9c84ec3d77c5cf5d17e281dcab84f62e7c0daed6. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/JPN902302950.
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 0x5a8765ebacf93e464dfc5c9f48a9c57762ad43c4821145dba0d9440da23b54b9. 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/JPN902301220.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x220569baefbfef2384973dd2ce9a1cc73c37827a440b8edad568b37956dc6a40. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPN751910066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a005fba3fc1028cd7abf71f8016d6079a02336d27f37fc4c82a04d28786f7a5. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/KRA491402350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe38918a64fb9a29efab72d8a60492fd7e403580886e2189b902e5de859b0eca9. 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/KRA491402351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0feb29f77f6f0b0894cb28ba61d5f3b420ad41e07c28c101b07e0246664e253. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/KRA491402352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ed954945e2363c4a66e7ac6c7142f8c72e38449db570ccf270dd7836ec1bbee. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/KRA491402353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb01c82b657291ff290d56737c65941c9438593791ca7cd0cf853ecf77ae40085. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRA491402354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5349b85be737c1b3509654ba25573e2a1af416bb98f70615d28a8773043cc428. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/KRA491402355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca851f2e9776823038eeec523a8523fa7e4398d9408f6867ba5938901832dc19. 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/KRB101200026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d3a63aa930969a0d9c689b93207d4a27974dc2902f0c8beb51f1efd7de2e128. 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/KRB101200027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7274a64f15f08e3c44c90eaf9ded2ec5992db975ba786bec39b90522967f525. 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/KRB101200028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x577ab1ff094fa195d0ca01e543e111f8779bcc03af6f98c24aff4510fbcd07b0. 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/KRB101200029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb40af202fa5c40dee97e364843a98a2d8bc3245318abc0c11efa1d715c3d209. 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/KRB101200030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3df9ba45a19a581fe186d93d8148559cc71f2610f9c6ca12da8fe501b957c52. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRB101200031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd82f844e22fd849d3277ce62815755f40f94f0e4e40273bc60d16da6bb4f7265. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/KRB101200033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19563dbbc800486077969e182e75048be41b4da6fe9bb98852ddebf0a421e612. 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/CNZ632400847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81fab11f158fb892ab1ac48f52afcd012ce86bda67014c1b7e8536e22e43331e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CNZ632400852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26db6860288d4aff247e26c4e43a90942abe0879f72be373e3280a66e97476fa. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CNZ632400868.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0324c194401746e6b514fbc7bd77aa77f825aa461643447e3c8688ee7e0f9bd7. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CNZ632400861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4346a949d6a147e003a8cef15586ec90ab2d5de9ad76fae66bf678ac8e13aeaa. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/CNZ632400870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x820e114657eebf1e18dc3724550e7fdf05ce43e521fd17e9b36cb84a2cdfe1dc. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CNZ632400874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00f04d0f44fe5b0f7830e2f69450cebeb815f3ae2031a8030b22370ae23567c0. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CNZ632400880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb492aae6a6e672807236dc1bf56f87b9b7e9b955a7a0a0f528c5010ca87458e9. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPVI01518440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25f61d24e7e18208448e88c95d552a9800619b0301431c1bbcf9d78c6acc11b8. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPVI01518450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c1d7286f689ba2130e04b0d45ba24ac535c5e5ec72df9fd4cb442881122651a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QNSM12400798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5745f1ddc1546ef26005ed41731b79046ae05a8beb0daeecb9f9de082264023b. Chain 2 (Bitcoin): anchored in block 960187 (2026-07-30T01:34:28Z), 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/QNSM12400801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fb43f9432545018c560a50e9536f6afeafdbfaf028d757c75881e959ca4e281. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QNSM12400870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa241e270bfa33f3350b741c8837d974fd3f138203c90f2d8c54e8f4b6afaceb9. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QNSM12400871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61292bd9c245c29bf1920c5904ecf186404f2d841c600e363031563087c9680f. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QNSM12400874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaff676c0c48edf40eff5b2b0437f1d9a4c73c277c216790bd63f44cb3d41c056. 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/QNSM12400875.