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 0x89daa0652d9db8730242e43ea785ba6d5a2bc2d95ced29fe4678eeeb2ee5343b. 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/5334bd80-80c3-44e6-b224-836564120a85.json and https://artists.proofprofile.net/proofs/artist/5334bd80-80c3-44e6-b224-836564120a85.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 0xa12238f76c8abdeecd9a772a5e315bda6d2a493ef39e2ee9a2517e39e545cb2c. 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/QMDA72315518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9499e5df8fc7833b8ab7d47dacf5097cba1ced7d286d73512303e3df96abd36. 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/QZNWT2283896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b7e75d0000e4bf48d7be96cc71f9819f955b86d2225725940fbf7a4dff3b620. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T19:47:37Z), 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/QZNWQ2214909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2212caa4a6ff50107bcc766a1b417a79e4be17f3a729d18bab306b50dd846c19. 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/QZK6N2243171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f865efe3cf8f833a9471b13e63352612591125fc51494aa407121a1b968cd1b. 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/QZHNB2238638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a65168d22f7d7a6266f435edc7e2dd9ef4421b95dc15093025d72c76a0c6caa. 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/QZK6N2243172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34a1bd60f172274fab97c269e19bb1eaa3b78417527f99bbddb94c98ccb89239. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QZK6N2243173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce3d0307b7c9eb66135043469caedd6e562bdff15c68aeaa492c06819b1b571c. 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/QZK6M2182220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d42efcb69e1c9ec41daf1c61d089be538e96aed28db038dfbcd0260c2088a7e. 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/USLZJ2141573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb614f4a2a4fee0fb94424c53fe3e88fb23a58bce6dac45a92252c28dac8fb812. 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/USLZJ2053012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe482542929a3b684c81775afdc59cc16127378e0eb2fd86ca5712019684196f4. 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/DEHK91995651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83231e539a026d1278ab362b6a93e5b7e59a7f0f04806a05126cbc93d2ae29b5. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/QZDA51988824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e1eabab8befa334f8f2285446043e8aefc661a6f5dcff746b018dfc0b3c81d2. 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/QMPKX1891950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4287c55f65316791bc5eae4f0a75b91d9af0f9596c8a1d091107e8bafb8db04a. 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/GBSMU5212241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18162d61ce8262ac596102c0677563d5b98e4a823e021b1dff992a8369391ceb. 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/QZNWU2278809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cdec83cef90b1f8ab900bb73598c435229471a97c9b3387d075fbaa1ca3aa85. 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/GBSMU4064529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x389af04d806e15681acfa298ed5dd0fb2210b8d193b803d893dee63680bb1156. 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/GBSMU2382401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e24736ee5191b3b25cae422ccef5192e53ef204f287b3ef3c16bff04a528012. 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/GBSMU3801056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b4a0b47f1bef7a72694ed2ce7cb916ce04b27591a42fe336639be23b929173a. 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/ES6642300078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00be49c4156c7b842a6d709770a0cab3ec0369de43cdd2b6b6f2e044018b172b. 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/ES6642300079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x088657fe59528257a1e8d192ba422c007d3d78ee7a038a85e37ccb1e6d276391. 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/ES6642300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb715c48dd8583c3aecf8a40376c6fad40eebdacf0de5db0607e4c144ba27169f. 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/ES6642300080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2decf0ab98b4ff228aed81068858296ffe32605c81245ccbf5b9cfccffbf29f8. 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/ES6642300053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa098df13dd194ba828b6abfb08ac3c2edfe87a90cb439888f4e6f8f6848cd040. 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/ES6642300081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae5c8ed9a0edf469fbfa2611c3bc130da3e83cf06659ba01f6adafca98f7ee78. 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/ES6642300082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1482d6b5ee013560d9db98b1a0168c66b79221a192da601ca80e52817f0f7155. 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/ES6642300083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cecda0c2364a375f8abc8c73a0c29e659641ab2fb2cfd94c29525ac46035d06. 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/ES6642300057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x499c849e2d9babed001a2e5e2fae504f78bef47f6a2b375f9e1861c1a04e7d05. 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/ES6642300077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ba2adb0e746761dada3f8c6c26a93502013b83163ffbe1dee9fdc56ec510753. 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/ES6642300084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a86f9ca929084be10b37c7e01cd422deace6c5ff78992363c39ef056f266b33. 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/ES6642300085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x647b4e1c360f71ff611aeea15cab0573f76007fba907754fc640915794971123. 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/ES6642300086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22f45089aca6bda7c72d776f3eb70d78baa18a3cf4b9afdb1a414994c4f608e7. 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/BK4DA2503733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aa0feb4b06f68ef13c7ff5281a72d13d4568cd6903b96d3c337af75d614a7bc. 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/BK4DA2502912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a96c1dd712ffdcb423568350f0afd3a58036c2a24fc465fede25c833a451b26. 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/BK4DA2503734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa40f637ae5b9c7b3365779b38c2035d96a3fe959fc46c7b044ef3707e570fcb8. 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/BK4DA2503735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9431694a7009355f2472892032212445f18105f704f33bfa8b601c5ffd327b6. 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/BK4DA2503736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46b32a8db90ed43d804c3e7082119e70704b775303aa731d4ed32201aa8c82b2. 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/BK4DA2503737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x042e82ac43335dc838bcd77aee8efdf2c4ee30559987ff40eb11870fb695be2c. 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/BK4DA2503739.
v4mos a la fiest4 (se puede prender…!!!)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29032e970f507c4c5bb34ba296e5fa324604c9cdaf5fa47e71f8c70296e08bd3. 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/BK4DA2308171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e21f74d93e2b48fa7c647f67490e37f40d30d454ab0ecba8d157bdf5baf5bce. 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/BK4DA2308172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dd903d780582c1ebe2ccc82e5503ceb7f5c780f7a0e8de83a4e0d7604fb28c7. 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/QM4TX2231709.