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 0xb564c225332773bdb772503115693a80aa3bac0235e8f656446795c52323cc57. 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/677a1fb5-6a2f-419f-b48b-53c6c6f1a898.json and https://artists.proofprofile.net/proofs/artist/677a1fb5-6a2f-419f-b48b-53c6c6f1a898.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Sueño sin Control (Hipopotamo & Leo Aba)
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 0x2fef5b6a46de837e73882276aa23e83895076e5416ab9b2348694690557e287f. 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/QZES92586168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee5ba71e18368ca0333c616dce42cf3b04b3c1dee06bfb5a126441a04cb49d69. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/QZHN52500472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c8ed62a319c05536b63a9f55cb25e1c72bbae905765cf203b328d44b6f24b7f. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:04:56Z), 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/QZK6M2574893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe267612b0ae5ec0a6df8982bba2444280e750d36225e90e7fec7ea8a57ced8ec. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZMEN2547564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c423377bed0c2fbe3581657658e9a1e9e0f2f873e6560332c15bdaf4c3b60bc. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZMEN2545435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe229356f48409a7b14ed5076f99b1576a293aa5773cb4b9a66423b2f8cfcc63a. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZNWY2554338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5efb14b2d25b67928b3a895ca30caf388b64605cc28b460860448724b0b4c45. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZTBE2549896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x983c41be8c61a67383087deff821c8485a31f5ad21b2f56ed660482a67d30d18. 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/QZZ7W2576483.