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 0x7e776e52c234c48e43b5ab4a53717ef32b2ac01b1af6716b43f98223ccc61a9a. Chain 2 (Bitcoin): anchored in block 953791 (2026-06-15T13:40:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/df070770-d011-4637-8f65-e624f4c25811.json and https://artists.proofprofile.net/proofs/artist/df070770-d011-4637-8f65-e624f4c25811.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Sudani Bambara (NOMÅGIK & Samir Langus Remix)
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 0xe4d80642514bd58041e85420bce69580c40a0c6a1a1b7ee0eb846df3e1d3df53. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T20:53:41Z), 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/QM4TX2215728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05b8088a0d62aa2ba295c361c6e3be010c84d7fb9731c5edd5175e562f10ca4c. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QM4TX2212493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cfae570aabea72582d8340cff2d12be39c99e7dd95836bd16573ea94d19d61c. 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/US83Z2402863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd225a70fd6bd27dd6b73eae912802c83eb98a640b7255f55ecf6f84d99c2f7d0. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/US83Z2402862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a1a95936b779978c9f965b828ed087afc8b1c6f7f52c3c27a7396d6e0d36223. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:48:38Z), 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/US83Z2429858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a1a95936b779978c9f965b828ed087afc8b1c6f7f52c3c27a7396d6e0d36223. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/US83Z2429858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0cbaeaafdc60ac358f3b04e76ba763fde103d549d0dbc540b71d64b22b261e3. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FR85U2300027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d8060877c2ea876fe37f729536231129b5dc0b604e3a18c00341470e2422903. 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/FR85U2300025.
Sudani Bambara - Zuma Dionys Remix - Mixed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3058b8c5ec87820faa8da65c84b01913875e30627eee06c3b7fc20a7995fa874. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US83Z1915997.