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 0x3b34210e6a4cbc875fca29244a14a611d346e5f6f1a44a88d6f421ebac69fdb8. 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/0503a13e-1c3c-42ce-b0b3-557ea3399f44.json and https://artists.proofprofile.net/proofs/artist/0503a13e-1c3c-42ce-b0b3-557ea3399f44.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 0x826c4278c87debb6c9cc5c4fede1be979e67800a626de25d1cb20690c457d63b. 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/BXN9M2014919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafccfe51fa0abc31b1c43a329dff3fee69b10bd0f64f9e9c6406d9f585f3540b. 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/BXN9M2014924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf50f990eea7190142412d5de43b8ab29d6d536d39986e328e2abd1261d40f372. 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/BXN9M2014925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cdb6720b8c04c0ca797de2129ec0c93eae376d5ff22d70266582b9e712ffbdd. 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/BXN9M2014929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x349a9f5db121c932bc7d45b7d171aab14ec29a00846bb236886775634e0b5b3c. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/BXN9M2014927.
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 0x792a1089d75b35a5e61e009ee83540c23d488dc339d13415214699c2040999d6. 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/NLRD52410849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2de2431d92b919cd240eba6c57198980c1565e7ce9616152508c8609ef978a9. 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/NLRD52410854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e1d9f61dc52b47b0ecb3aa3228456ea071918a58c7b478ac75b20ad887f6ba4. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/NLRD52410847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe09cb033b23104fb61aebc329b98c27d987e4920599ba5a4969d5b504c708c00. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/NLRD52410850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x417a71faa32625f65a546433c4f736cbaa10fe3302c0e5d25925eaf372e85a18. 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/NLRD52410852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54b9b30279f8ea0d28e38df33bb7f38e03ff4d5f5296475f833f44e98051383b. 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/BRCDV1800330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa4854bf0a644d5af02a935eba780b2864705be5fad32fc4cd20b8c098c1a67c. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/BRCDV1800331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89ce439460c3b876d6b98195264c731c3f67b0d78d312fca1108ff7d5dc6515a. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/BRCDV1800335.
Pot-Pourri- Dio Come Ti Amo - Champagne - Io Che Non Vivo Senza Te
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb51768c94cad5fce1e454efef9af1c10074bcebb1bc56d101be232b11d077f4. 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/BRI9C1400731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2349f3085734e75ef80b1571a5084b5f8ad085acfe8d60e66f5013288a29bb4. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/BRI9C1400734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ca30f5a014faf5ddca41e1302f823bbe9de341ee445f4d64a269b52d977a6db. 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/BRAPI1200259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x648a4699645beb7e711fc88b44f2fb5b9a1fb9b9f64ef266c60e68857a978885. 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/BRAPI1200260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae2594c881191f3d068a7694479fca2a9744817fe1b7e3deb750aaca97128b1a. 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/BRAPI1200261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf94c62d31c74cdc561e709da76298e74511b0402a33d809e7af085b78383a0f2. 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/BRAPI1200262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c5d891e85a4c35ad80573b323db86505236b9269139bb5fd7e2c34af5194efc. 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/BRAPI1200263.
Menina Linda (I Should Have Known Better)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c7bbe88eec5da22a52e94b78b06defd5cd8930289f86e523cfc33ea86fc939c. 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/BRAPI1200264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51926c90d506f68a5935b71bc8f820cbae9c59d50aa36182febbd228b96931c9. 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/BRAPI1200267.
Pot-Pourri: Dio Come Ti Amo / Champagne / Io Che Non Vivo Senza Te
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fc2fd04e374ac7b87abbece32ecab4ee41f0daf41adada75ad1b7033888983d. 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/BRAPI1200268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01e95231581687e595b921d5b83f24fb30cbcefa4912fad9d1e58e7a104bc74c. 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/BRAPI1200271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4b951830e2204d84cc03375c70a0eab527fe4c53d1c9c822df27099a4f89b15. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/BRAPI1200266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x079fdf8cf9f54603b8d2a0bf74d23852229dd6d0fd20e6c3e21f093714493ee4. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/BRAPI1200269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e2c21eed40bf98b5e4e0a5225d9452ca7562eea8d9d7b8a29bd1231e9844806. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/BRAPI1200270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67fb3be052ee19947167a2cfcc99c4974e2ecea449a02791e25df800355a2df2. 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/NLRD52417904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36c3b0ad1bcfb0d21feeb53c7ee9ee8c67260b5b70663ba11ac8f5d28249cdff. 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/NLRD52417905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aa45ea68aafd43e265820166df250cf39c12cb9a64ed77ec3302de10fa7bce1. 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/NLRD52417909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8abb89a40e9efae483d1d074d4af8680f7d9994f2926229ef2ea5e139c72683. 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/NLRD52417910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x134b2143eaf6c009a0ccacbb13a7eecff0aa6a1d045d6baa0b09410a88ca94e9. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/NLRD52417899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40b85b2d01b25fb047e49146b5bc0d28c81eab39f4bbdef007c42479baaa2292. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/NLRD52417900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18350baded4ec3eea0313f2a4991067f613e458d3f5c920b7b475238c667b526. 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/NLRD52417901.
Nunca Mais Eu Vou Partir (Is This The Way To)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81a900836bc7b1997335c0a39bc74ac6742d924c29abd28f41949d3346411df2. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/NLRD52417907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x305c233cdaaa3f66afe88e6edcca812f8ea5b89c36a903a8bec5583edd7f844c. 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/NLRD52417908.