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 0x2ff86c98e4b32aacd7f12ac3c1036f60a391ee3cfd6be70c256bf309c10c6f6e. Chain 2 (Bitcoin): anchored in block 953765 (2026-06-15T08:55:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bc6a3e6a-a273-4469-99da-d0d0d967d458.json and https://artists.proofprofile.net/proofs/artist/bc6a3e6a-a273-4469-99da-d0d0d967d458.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 0x80b2ed487bc152a7aa1de9d3eadd4e3f84260f9fb204f1ae90675ea51319a1d8. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/KRMIM2351351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecec528167706fed9c9113f0b853dbba9db552558508c93311a587da657b19d5. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:36:14Z), 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/KRMIM2351352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eeb098d7f1e81a07265fbb73e3979cfa46b8228d7a33884d464201420b4e710. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/KRMIM2351353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebec37854b455239db3366cda57e219e437a86c5ade9c06dc886a41809e5a157. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/KRMIM2351354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8342ce10674463e8d7737e86645b2c8e7d9474ce063231e569695a03497b2a8. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/KRMIM2351355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x835bc0a922ef3af1cb390548cf57e56cfd2e7a654c31396d5d47c4ddd83aa2c2. Chain 2 (Bitcoin): anchored in block 958691 (2026-07-19T07:19:31Z), 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/KRMIM2418761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd57d5ded90a67b0fb36bb0d986dc184d0749f764a5a281fc2467bef97672d25c. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/KRMIM2418762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a242fd39816ca5a904988e6c73b55bc7260f5853ec3cd0155a6f7a8022b9d27. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/KRMIM2418763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3172e0e19eb8651a6c01f2de767d483dda37ed840ce40b6df4d857e4cb9f6f56. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T21:48:31Z), 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/KRMIM2456667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd04f075cd252ac98782a67bf808d71d8b493757d75864d6d4e827495b2318534. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T02:41:15Z), 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/KRMIM2456669.