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 0x0f4bf0910c02963b5700c2c92e5faa1aae639227946d57866542f4e3de4bd7e0. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f2d189d0-f9c8-4fe8-a467-be1045d26fec.json and https://artists.proofprofile.net/proofs/artist/f2d189d0-f9c8-4fe8-a467-be1045d26fec.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 0x37bfb42b705e636c9e6baed67d470c8c124c4633c8d0653db76be4daa1ac7d9a. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:04:16Z), 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/USJE61709770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8fd86214ceb70ce2d4c7c814f124b7d9504f29ca200e9fe2a2ce4e8f198e449. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/ES59B1100123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe92c1d15f99167a766fe4e834d13d643e207863c86fe416dcadf2e3d1e047adc. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/ES59B1200235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7863e064092bb96dd7b47844ba54183a8b87390de60e3c1f5ce53b8a547b21e. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:15:25Z), 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/ES59B1400265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69f03dd6bf5d249d8bd1a28a2b20f97d53765463e8c16e8ab8bb3ef81b0f7648. Chain 2 (Bitcoin): anchored in block 959054 (2026-07-21T22:51:48Z), 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/ES59B1400281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cb9318c129011afd9983f37d04232825d385071f62dd8e4cc8b9a8990ce75ac. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/ES59B1400284.
Rompan filas (feat. Allexs) - Radio Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aa1ea36e56eed26d245f2f55c9a74d17ebd46f6a4793024b0f3e8a2f192d161. 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/ES5151500783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a6733b9c45e60a4190433957071e13b3b357b31747c7c3d21acfca90d83c016. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/ES59B1600307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf2612cf1c82f96c3eb15c1e8be986922fdcf5cbe9adde9a6eb033aaba127ae5. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T11:23:56Z), 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/ES5151602279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19d4dc54524aca09650154ad5ef707aede4efd78265a562a669f42759e74a680. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:00:24Z), 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/ES59B1900346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb7847ffd759cdc4ac18623f8b19fa3dd71c587bf3cbe07e8a04a0ecbb8f5c9b. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T15:10:51Z), 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/ES59B2200379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c33b690edbf57f399d0e2cfbd4ca3183a23f387b5fff63ee593f5cff7fe13e1. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/ES59B2400398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aff08c7bbe8c6d8063d0f785cfbd3295a263f51cea76c8ef3ee8be85405978c. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/ES09K2500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92c9838f663a7cd10401e558efa0a9d0e81df6ae794cec638b7406105da6608a. 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/ES7511332214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ba3c12b6bd468a72c68fc22fbf23630424780df0f433c826ab39f8ae3763f3c. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/ES7511332107.
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