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 0x53a97a597899ee751beb847acb4d9b0a2034511b2c3eb89b213d5d16de49679e. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cf3b6ae4-efb3-4cd9-adac-5f144978ea03.json and https://artists.proofprofile.net/proofs/artist/cf3b6ae4-efb3-4cd9-adac-5f144978ea03.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Endless Corpse Bash (Krovavoe Pravitelstvo)
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 0x09bbf7f30d89976aabaa099184852b207d9a8852a1fa65bdc5f751177da1827e. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:40:46Z), 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/TCAIB2404151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26d7f0bc2fca495bbcd9261bda2bd9aee32ed938090d8d7163302e5c136c4703. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/TCAIB2404314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09bbf7f30d89976aabaa099184852b207d9a8852a1fa65bdc5f751177da1827e. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:27:12Z), 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/TCAIB2404151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf82703d44b9780126cc0251151662c0f069b3f78380be20fe5b3a1b8220fbfdd. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/TCAIB2404286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26d7f0bc2fca495bbcd9261bda2bd9aee32ed938090d8d7163302e5c136c4703. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/TCAIB2404314.