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 0x4adda220e34db5c74b80e6e57c46298fa8d92e8b60c23b217a9add88ee513500. Chain 2 (Bitcoin): anchored in block 953746 (2026-06-15T05:25:34Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a5c96f93-e65a-4b61-ab6c-b563249d7bfc.json and https://artists.proofprofile.net/proofs/artist/a5c96f93-e65a-4b61-ab6c-b563249d7bfc.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 0x98d231e0c0e92d923f3bece45cba690e960897e5ee2a8b542e99ae93e3520e0d. 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/USCGJ1717191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e4fd22a525816434005d04c2d04e4a8cfcf05005888a72ebd7a5a9e21ffb35b. Chain 2 (Bitcoin): anchored in block 958647 (2026-07-19T02:36:14Z), 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/USCGJ1717194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e90c2a927cb3daf90c9d653385c0741d202dcade2fc4be992f38d989acd8839. Chain 2 (Bitcoin): anchored in block 958963 (2026-07-21T04:02:02Z), 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/USCGJ1717197.
Mi Ultima Oportunidad (Versión Acústica)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9246c95ba654717dfaa9eb02a161abaa3b73dfc71c0dfcb7c07f9b2e8d52108. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/USCGJ2028472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a7bc4becb88591a1611afbef850ef5da09c86267cdb2b488d5a95e0fd35f07e. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T12:33:53Z), 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/USCGJ2028475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc61b856b3d854b71a248cfcdbb7e169a7303e787785ec33ecd2950b94bceecc0. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/USCGJ2028476.
Un Gran Soñador: En Vivo en Hard Rock Cafe Panamá (En Vivo)
Estrellas y Ron (En Vivo en Hard Rock Cafe Panamá).[En Vivo]
Tu Decisión (Versión Acústica Reinventada) [Acústico]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x532927b4ab598dd10062498909b9e2110cf63e0eed1355f923faec41d35251f8. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/QZW9M2331881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa41561d9e38fe0c9c3090200f83ed0201621d4fd8f6f1ce94936050467b8ce76. 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/QZW9M2331882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c85f1e518198b2a37fe53b3d187546e01c652ea802bc4315f2856304ed77e82. 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/QZW9M2331885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f08fe6648c18a2f710ede52d85d5ba4f701dfd18558c43e3697f4ef31920a13. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/QZW9M2331886.