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 0xf1e72378592bbe8164ea4b28c9fa16176aadec77c7c740420dab58f141d121a6. 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/a2b2067a-da62-466d-9341-a2a1ad215e73.json and https://artists.proofprofile.net/proofs/artist/a2b2067a-da62-466d-9341-a2a1ad215e73.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Fala pra Mim Se Foi Caô Quando Me Chamou de Amor
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 0xb6501d285b3095ae458771005b2fc6c75dddf270d76a57634053c734c8a55f96. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZEQU2105949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4da9df7df71bd09c904a2862ffb043e42feb9521ef6f4e4ae86a7ee3cb9df46c. 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/BCGNJ2000014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd7ef3e2c57ea92aee3ec9bdbb72681f7f573d7037c40a7a578795ffd8619345. 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/BCGNJ2000016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa582b3ad2b080d87ac8f2ce1d3779a43c26f04d9d138dc280ac47fa1871d092a. 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/QZEQU2105945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07d1324cc60bc34e1c2c7ae9e878a05fd57a6f20820aa9c769420c0d8d473801. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZEQU2129705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7e83dcf29d26c019d6cd6a6c8fe5ffb5e3a283c2725a3a770e7d1e449c58e12. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/QZEQU2137358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe53e4b6a8469afffb1802407718e4da52ce04d3fba01b45d0e4b804734181bf1. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZEQU2137359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b9d8051ee93abeed1ac573b761afef3550330bc93fd492c4f5b4a549b910c89. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T16:58:47Z), 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/QZEQU2152145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2165cfece201afc6ad3d0642ca83edb202c42dd7c372279f88c7a74f3d9d39fa. 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/QZEQU2152146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87e401a8aa2863f9c0b94b6268ac172b76e0662d38514f993a6cb5086d2af98c. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/QZEQU2152147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8f0cf41cf2f8456603694a501aa52b6183e0692cdb23349c9564f7b51aa13aa. Chain 2 (Bitcoin): anchored in block 958495 (2026-07-18T04:39:02Z), 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/QZEQU2152150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5123a20b320d388e2aa33fcb847cbbe71c80f9be6b088a7504e88341c090d6a8. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZHZ52288546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc5f6e8b88b55b75c2ae90fdc49aa0a8e064dd24b308005163b56bf9ffad95b9. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/BCSIU2200345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54a15dfd036afe228c418bdea3a568803e9bfb7e3299c272df3567d42ba6b529. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/QMDA72241988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d3d29a3779d7e63146116e192822ff01989f9216a3ff691e824a3c9d2cff742. 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/QZTPX2360883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3817af2bcad2319f78f3cb3e9daa6f164089bc98494db6aa5cc87bcbfc90fc48. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/QZTPX2360885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12db7d98d230f1ed9944dbeb6dcb62495f08e3906ff04f022376c41abe011a7d. Chain 2 (Bitcoin): anchored in block 958493 (2026-07-18T04:34:53Z), 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/QZTPX2360886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8556bca43f7b14bbe822a4f0cf567110d69992105b974a707269d68a6bac5c96. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/QZTPX2360887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65003fd685cf8e6acb3747a0b5015f6222bf49663e60beb6f85713f5860630b9. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/QZMZ92414049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe97a0a8973713c18a64529aba97b37b5f1980de40bb70ece20957e11343c58a3. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZMZ92414051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfad570a0cd74bbf942d24cf94ac308518d18442473d910ed4dc70187eb9181a8. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/QZTPX2411386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcac81e20b569ca88acc0fd0aaafbd60d4f29f8317682bf37bc100b6019e146c6. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/QZW9K2490291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ea9a89a4daf79b572e845cc1c31131756c69c2a3488966141e17493fc16c65a. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QZW9L2453898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb164463b806f36186537ebad72a602960d6b7979e6d3e3bec8d16ef9b233f80c. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/US7VG2597126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dc00f9f3d98dbe67ce28ec018f72a226b8d97881a268b30c1ebc70fd1c1605d. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/QZGLM2540227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcff8debc7e69cd6a285d9e12e2633779538a162538beea78266eb037dd49be1d. 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/QZGLM2550395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fc8e059df35581f0d632739eb90127146d7fa91ec6f1aa7abde9a1e533f28cd. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZMZ92576981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb783c8d5f4853a31f6f6b005930a00830e479136105f156ad721e8e83ca322d4. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZMZ92576982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc23bdf2c3047d1de33d5b62f980a7f889f13c426031a3eba344f90aa218de4e7. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZMZ92576983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0318a1ca69906120760cf0113767321fae7e5ae22cc16fecc470376332563a6. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QZMZ92576984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x912516607525505868930eb354cc10d3786fd5812f39fcde65c42e73bef03a58. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/QZMZ92576985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16a690fb2dbaf6ea3efde0b2ab07dadcfe2f41f716658ca52d546b1c7209d61e. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/QZNJV2562487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bfa30b08926dba9cf4be0e471ad2c793b8deddb6c936d2d8615af22291ae0e3. 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/QZNJW2552979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a605e2bfbc1e25fa1bb47ff6ab0c37fe1bf864d7a5ca0440e33f611886f6d3a. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/QZNJX2596649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffedf61ea45efb16702bb425e5ab04b84075731a7224fa116ad37ed2439eef5d. 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/QZW9M2263479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cf8de3a0a9d2b9dc137e78da89dae13a8ba2f901620f0845072a3a2d336f112. 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/US7VG2486235.