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 0xf3e26a96d79d51f9e8c9a1ed76ff5a974caf152bcc39735fa10fc3a5f17bd81e. Chain 2 (Bitcoin): anchored in block 953614 (2026-06-14T08:40:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1770290f-7f97-4b5b-ab21-d8e48b870934.json and https://artists.proofprofile.net/proofs/artist/1770290f-7f97-4b5b-ab21-d8e48b870934.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Naranja Dulce. Canciones Tiritibrejas para Más de Dos Orejas
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 0x260f546a17090d1609612417a92b6239fa04119a4edbd00cf1f6998b30cad72e. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USCGH1988377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf38b56244edb1e43a437a9beae114e523f96b0de4e9e1402089888417a5b35c. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/USCGH1988384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde185e39d6fef633ba39f85d8925801a1abdea72b394e97970cd682f2ea37bd5. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/USCGH1988385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02f8f59f2d9c8f17b09267d8adb4a7e747becb7d1a64e2e12636bcd331ea8602. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:22:48Z), 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/USCGH1988395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x029bced0c7dd50acabf04a8f956dd11d237c35c79130e41b2e4629565d92698c. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/USCGH1988398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79dc51b5133565ced4fb5e56d1a3812f937c4f6a59622086ca1dd0f078a09d08. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/USCGH1984241.