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 0x5c674d7acf1603e11cb4133824e8c3f18330c09a4aa90a6382e0a2347fb1048b. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2163022a-2301-449a-8b49-f79a4f0f20e2.json and https://artists.proofprofile.net/proofs/artist/2163022a-2301-449a-8b49-f79a4f0f20e2.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 0xa1cd1b15e905b55a86d470f052eb202f2ec1d170959f27ab0c293694409ea34f. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T04:57:36Z), 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/USE831574244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05c3ca4f3c6146d8758c1b4c1bcb618eec16553ff06d59a3146d136c5749a619. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/USE831574247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bb71f6118b5a4886f9b04753f358019ede24cac6fc2467631e678325053e26b. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:24:50Z), 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/QZ6K41901226.
Dearly Beloved / Simple and Clean (From "Kingdom Hearts")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6cb0259a8763b462a29a19ee09f4650e35229cdd86a646cd2ffc096e118bb5d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZPJ32326923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4ef02939b326dfbdfc31af6cd3855ea05c54a1969fd650e4708de7302006d37. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USE831537392.
Brassino Isles Tropical Cruise: A Video Game Getaway with Friends
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa220be90ecdcd2ba09205557c05b608440a8e35e3b5efb3649bc7daca9590b3. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/CAQT42007011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dc0fb5f3542b77c18e91b1f74060ab060ae15abb8d65ce8702bd89a252dfa2d. 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/QZ6K41900112.