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 0x2da95e2d5544fbec8f42edbf834d6eee6df9621fff9eb6d6d6ab0c192f681c52. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a4f879fc-5ed5-400d-a145-3d0a81fdc950.json and https://artists.proofprofile.net/proofs/artist/a4f879fc-5ed5-400d-a145-3d0a81fdc950.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c66109f9a405abb7a25d2ca64b1f0183445a4c9bbbaa149073b23ac04235971. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/RUUM72200029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85e15eacdd8aa61cb94e648d37edf861aa7b9cd7b8ae7505bffd66ca2e0ea7eb. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/RUA1D2231056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5d24869ae154db58218dc6be290ebd876f2a15aa1b795c75600809a846f93eb. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/SMRUS0073626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2db50ba75d9dc4f2959f9d07dec03815ec681c6176d608ac6592cf29a747be36. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T05:47:39Z), 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/SMRUS0073627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x344b3a772e017210295e2aff02a50b90183d9631b1258ab28032d6cb0b8b8ad6. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T09:49:36Z), 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/SMRUS0073628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbe8c957f4abea16c7d545539bcd408f3216d9ac24641c76c660068ebac58144. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/SMRUS0074302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8be519583d46e4155124c26e0486aadd3a5244e54acae1fc4f1826f19a582d39. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/RUA1D2359610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03fb9e519a34c2d89c95e56ac07ba56ede83d1ba56c38dddca7c951121ebfae0. 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/RUA1D2359612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe853ad0d2c73b2ef04ba4140b1422166b2fd8a5cca3443921cabb72d2e3c4457. 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/RUA1D2359614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66f48895bb853972a60e615c97396624d291d54b31de4f6f80b1094d748195c6. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/RUA1D2359616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23859bbf3216bfd2305285fff75ae4029aa574a06a567fbd5de1d936b9e85ba7. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:19:50Z), 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/RUA1D2359618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5775d955a49a704df57a05fe3b905b1f9edf575dec19d33d7f29e514e1692c1. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:05:10Z), 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/RUA1D2359620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cb77371755a0d2c981c3cbdb06db7cee054435e5d9b0e8412dd452b7a0e8b02. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:49:34Z), 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/RUA1D2359622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdf25a8fad09c44d071c3ab10e0427eb607aed26bdf0a84753c17826f5015158. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/RUA1D2359624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8a2c5c0287a71c03a22ba92156a2de9a1f1112a98246d7d5d594622f8e79e2a. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:36:35Z), 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/RUA1D2359626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b9a51af6eb06dabb347dd26b6def93835fc53cf3a3977c2264c0c6546abd19c. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/RUA1D2359628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7878fdc06b6ce17736bba8859f49f31a5b5c22f8236939c42193cbe076764da8. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/SMRUS0076339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d4f0028b76b63b9c9c92dd635d43f4b7d2fea0fde75438ebb0f7ca97921efe5. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/RUAGT2332412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb28c02a6548c3d593afff6af34e3cdce9032d9d9798f1501c46bcb369d1adc73. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/SMRUS0076799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbaf454ed2e602ed09b14b3dc41fba77f7dc94482dbba54c69188577747644a0. 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/RUA1D2476758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3240eeef75fedbfe2aecd805d96f2ed97ac8da0c44e9bb31d21569187a1a1bd. 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/RUA1D2476759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26c1721426f05ae6f434bb1d3250677402fe1f4193869db4daa58e5b96c92561. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/RUA1D2476760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b639ed03ed1b40dec72115994547cf6f6c2c2d009c8572368d9317c23ff45b0. 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/RUA1D2476761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x932ce1351944793e60810621eec7b12171fb14bc752e10b5c08a8f71ae3905d2. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T00:10:47Z), 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/RUA1D2476762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9f5654bf9e8ab614aa6a5e6f5399ed3adc18b13e95eabd754ef96da1c328f97. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T11:20:44Z), 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/RUA1D2476763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x730a85b1cc1204387cc7f8540711709943dd790c87199e6378ba0c57f44a3b33. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/RUA1D2476764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb4f2e36785421cf91ef6abddebf9d6e4345f4c61895da1bc4421443c3ab1e24. 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/RUA1D2476766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x245bc60aabb35de7a68abc7c995dde76c34a9ff0759562d95312647010a32c05. 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/RUA1D2476767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6ada270d0ea5b2b93e82b8926c323e0f419606aa24377e53120f2dfab45469a. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:46:14Z), 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/RUA1D2476768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa61eaa9a9dfb1bdac743f459c7d05f2efe986e9b5adc90872a55fea9d81e1820. 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/RUA1D2476769.