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 0xbf7b0162250878fdda3fc9e56481856d44c2c5a7d22d33a0b7b68714ea4aaf54. 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/8824badd-da43-4cf9-9a4f-4bc38fc418a1.json and https://artists.proofprofile.net/proofs/artist/8824badd-da43-4cf9-9a4f-4bc38fc418a1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Club Corridos Presenta: Coqueta y Bonita
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 0x9f5d04e86f9517f2c16a7e77b8f49cc3b84f89668d92d106a0477824e1441f87. 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/US9CY1001213.
Los Corridos de Hoy de la Tierra Caliente
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34465c99028badaca38a9d1e1652b59f0777d6a95316692ecf5093190710b0be. 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/USHM81455356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x042491364888654a8e2f56bbcd0caa8b5197779519763c15513c30e83dd2ce07. 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/USHM21273582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2acb63f5ced447d64117a7bd2efea2e88cf4753f5071d04a4763f87576f8c77. 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/USHM21273583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aa29cd484e11c768f989e338afff930568eb80c3393191be626479b8c5092f7. 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/USHM21273584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf4b422abb60183f6a2467fbc8407fdad5a2299ce39864353409d7c1c31e5128. 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/USHM21273585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e97013fc062e20e30a7e1dbf955f4cd5bf6823789898d43315c4734b34703eb. 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/USHM21273586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d2e2b26c52c562b12c3c60949c7459eb024e497bfaa1cf7b4d9a257edc1f02a. 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/USHM21273587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbca69737a1d0f8c6958cd928b53cd6ef39399292c2ad328fc26a21e244ade118. 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/USHM21273588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32c6948ed7028ae12c026933b2377e840aff53e46a51d347b3ab30069bd99da5. 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/USHM21273589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x304e342728b48b57ad045b91f1c35deb275a10b2545eec7d7daf57bdda14b6df. 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/USHM21273590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf35aa5c7e64116877a3a28d6629e10ba1a6cc4fb40cc1281471d921678cc819f. 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/USHM21273591.