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 0x6a12f4aab6ad77554148d53311c535a0c5a90787094348c05966c3e8a26a568d. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5e58bd7d-fcf8-4e34-8512-037f7cbdbdf3.json and https://artists.proofprofile.net/proofs/artist/5e58bd7d-fcf8-4e34-8512-037f7cbdbdf3.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 0x1c320f1043e7fe84ee8097d4961c303b953dc08f2e649097f7207f3e126a5758. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:36:04Z), 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/QZNWV2232123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43fe826ae60b6570363fc0a06b35235fd92726e604aef3772e795c3554a27c99. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZNWV2232124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdad7fc9e4945eb306f19804f7eba9e2dbde8b71e128c6ed1e1c51db196ad2d5. 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/QZNWV2232125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41e4269b8a7801b00296de0f57a87b938bbf5d656b759c1b40f3399b0b512039. 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/QZNWV2232126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf54bc5a149f7a4ed7c91ed657e81fd417d09e1f34ff89ffcc3b0353678da60c9. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:10:51Z), 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/QZNWV2232128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba9a9744b8f9393ee0506cdd61e8a86b5218d403ebc919c91fdede30bfae1f39. 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/QZNWV2232129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9dff332245f1bfacc591ac9e351cf05d9c1bf61e0ce90d6fe7582d7a6324dd0. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/QZNWV2232133.