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 0xba4e8e60725e5b7d58bd73634064089566f809a5a793e2147222471d92b81848. 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/b7b8ca8d-e883-4b0b-9530-af71b3934606.json and https://artists.proofprofile.net/proofs/artist/b7b8ca8d-e883-4b0b-9530-af71b3934606.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
El Menor vs Cevlade (Round 1 y 2) Edición #1
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 0xd678ffd4c7d0d1bac8692cc55d5935aaaae40c69f16f4ddb686c5c2c9ada93aa. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/QZWFS2470744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06ecfa3f64a099fdf58728f787765d344f389f7c79a26d2262081e6da97267cb. 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/QZWFS2470745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdedc8dcbeda3774bd3a6c3e02fe7cc83695917de93b1fd6c9377b014e963f5d5. 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/QZWFS2470746.
Joqerr vs Jokker (Round 1 y 2) Edición #1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd0c2d5f6613f1730f7393859701d8f6854e3267eee9cd85515936233e508c98. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/QZWFS2470747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3ee6d615ac4f81f667d8717332ac0fca611aaf7f560ad083f3166d19d0e0473. 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/QZWFS2470748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ebc7711ff3825a30cc91dee3c993016033e87702144fa68c3919e886fc47178. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/QZWFS2470749.
Mcmadetuhermana (Round con beat) Edición #1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb29f2248535f8de4d27a92a8eb2f414b1b95c8c43ad41be87dcfc356137e851. 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/QZWFS2470752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45afc700faf264a4554e72a717acd12f642249fdc512d1eb915e1151941cd87d. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/QZWFS2470754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a616566e82e8b57bde302baf864e0f26e303adba4c4d889732b5f16808c68ca. 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/QZWFS2470755.
El Menor vs Stigma (Round 1 y 2) Edición #2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc369867713513a6fe55d447cf009532b0f9c8a284a4e644005e9ec10bce728af. Chain 2 (Bitcoin): anchored in block 960191 (2026-07-30T01:51:26Z), 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/QZWFS2470757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4018e6925d4f40d9363dc11b0a04d447e464818ae187b902e4362cce9f34f1ac. 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/QZWFS2470758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91b887d65d76637e0c656e02ad9bc6b9defe432870cf69c61d08c77a12b8d922. 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/QZWFS2470759.
Astropoeta vs Joqerr (Round 1 y 2) Edición #2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2ba519a6e6f2f9262115e5e2ec36acdef5b05c41bc4cf9d1efee52b6a64deb0. 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/QZWFS2470760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe771cbc4787fcd15bcea641fab5eab63971b9bbeb2679a55bc6282dd7ee0e9a0. Chain 2 (Bitcoin): anchored in block 960191 (2026-07-30T01:51:26Z), 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/QZWFS2470761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b9399835dae4b42d476a3cab6e777bf880604ad6356bec2da63419c57145b76. 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/QZWFS2470762.
Ricto vs Mcmadetuhermana (Round 1 y 2) Edición #2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe676380d39f5b7d3dc908bd13f9e9968fcb0d425180ee5dd22def238741258e. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/QZWFS2470763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa45b1a676123f96092e76bd6e231a7d56ac1d926cb12348f85d86950f07dbafc. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/QZWFS2470764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aa3132799ee2473edd2c7979d1060b384f651b4f1b01980671c2575656d40a7. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/QZWFS2470768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ebff39756eacbbeb084184d3e2971d2dc2b432b2b69bb2a4727c564fb53cc4b. 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/QZWFS2470770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89c231869cfd9907e002085e989f0dbca3e633ca363ac952bc1559a7fb27ad4f. 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/QZES52540828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbfdc1dc6910b03e38e59f11b5e7e6395017283d3f41f92dff67d2c7f0a1476c. 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/QZES52540834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x387a6ee03a0896bc482dc2a8b040d49b02bbbfd1569b5809a9b40b60b5315791. 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/QZES52540839.