thumb|Statue of Jupiter Dolichenus from Carnuntum, erected by Atilius Primus, an evocatus of the Legio XIV Gemina. The dative form ēvocātō is visible at left. An evocatus (: evocati) was a soldier in
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 0xf0f8869535bd2c4a6daa0896ef4098150cd867764d710543ccc0e04af666038b. Chain 2 (Bitcoin): anchored in block 954014 (2026-06-16T22:46:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2acf79aa-888a-4d88-a932-26dfe2412970.json and https://artists.proofprofile.net/proofs/artist/2acf79aa-888a-4d88-a932-26dfe2412970.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 0xe72ad9dd12c2a55da33fe2a634b301599b3dd90484aa34a83e47cb06b43e991a. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/AUS3L2500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa73d4edb63dad0c78cfc5c66865d8c41d7badd37cf9ab94da7c10e0931dfd00a. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/AUS3L2500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b3c944845fcabf01de950aaa8ddbae8f56bf22534f06a0b027f5eaeb3a8b240. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:17:47Z), 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/AUS3L2500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfebdf66b5d3d3f6dca83dd2729c807e4f7817248aae2635d04aee0d4661ce57c. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/AUS3L2500004.