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 0x385575bc033b76913af1d7b52ad0fe3d929a6a472110f93ae0f70d1622a3eaaf. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/471a4dca-0594-4f9a-8a27-d2e8bce6ae9a.json and https://artists.proofprofile.net/proofs/artist/471a4dca-0594-4f9a-8a27-d2e8bce6ae9a.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 0xa8405683dd6bcbb3d53edbada28e431d21630f7ff78f3a1ac4833c55b0827fbd. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/ATUM72000141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd856e0cfa58da0ae037ab8fa21b349a6b73fd46913861b944f2a96ed8a4891f. Chain 2 (Bitcoin): anchored in block 958496 (2026-07-18T04:43:53Z), 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/ATUM72000132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf5b6c345e3838df89ded951f91c9941cdec60549c1a0b4cf67ca8d565d64f42. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:20:57Z), 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/ATUM72100016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa73d35edf74f3192cfe9a0b95e256bd076a435c9742ad1c51a19c38760a4be9c. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ATUM72200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8df8894c9403bb3384b5b277ae5e31c9f45c2646c200625764bb919d1ada5af1. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:28:01Z), 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/ATUM72200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cc92ecbc6c59a1f513a853e512044943b4394f3fa73ce2b6cf887bd5d88f126. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:27:18Z), 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/ATUM72200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7eb60a508ff34ff3dfe421feaf598ec2c254bc6fdd389f79074f6ecf5b6677a. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/ATUM72200445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2fc4bf313597e60f008fdfe089d8408ba5e67e23a32af66980bf1226c25bb26. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/ATJE92400101.
Ich verlieb mich immer wieder neu in Dich
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56338af05e813dc8468c77f382a3f69e080e3a308b8e6a20371c26dcefa89263. 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/ATJE92500105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb62e57950588cf2f6f5e3cfa8b4a2e591e729edcaca8baab578a693446523b3. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEW242400106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27208629760f8c9804ba3cd2444edbb57e91e7ea8c51d017857785604f069684. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ATB982000101.