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 0x061659e1ef60f44ce20992525719c5b5a835c030c823d061c18a33ac89268672. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0d8d3ea3-55f3-42bd-a8dc-30f72bbb73e4.json and https://artists.proofprofile.net/proofs/artist/0d8d3ea3-55f3-42bd-a8dc-30f72bbb73e4.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 0x488c5544a1b465c7212f3774539f58b73dd3c6bcb28b252b8e008bf25ecb5d82. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:58:49Z), 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/LBA132000336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dfa8563758def1c28d4b0ba55591b30338c99af75f9e72c0d42d21663f748e1. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/LBA132000337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20bf6d9b92e60be80550e698066b54cc32cc3cdb7ccb3a96ef69574471f9dfa5. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/LBA132000338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33b83fc5a0781bf099f40f76b2d2861e9777014e3a2501171b3ad203dd84cf31. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T02:10:11Z), 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/LBA132000341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x884c6a3f4da8a1862626a8c5f9e99e57df34e3efc87726de3aa042a5f0374250. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/LBA132000342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe912bfc66d1416a3c013d87342d40acffaf48a6eff440bb53f87616120739ff6. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:38:22Z), 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/LBA132000377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b855b1b9c83415df90f244886b4af21124fb3bb121bfd65742d0f9932d7532d. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/LBA081104420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22a125994efc8fbbce17c67243144a779aadd126b3d9f484d5759b066d613f19. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/LBA132000592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9956e65b9ee56b8fe5213f21167448b1253354f580facc499dec4ea929400171. Chain 2 (Bitcoin): anchored in block 957730 (2026-07-12T16:41:26Z), 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/LBA0H1900895.