thumb|upright=0.9|right|Image of a fiery purgatory by Ludovico Carracci. Top: Christ directing, with Mary and interceding saints. Middle: Angel showing a soul the intercessors. Bottom: souls being pur
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 0x52333d8e6a3643a4c3343e283e5dbc687ec17f9498f48b0be615365ae34dd61c. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4e92603f-b07d-41ba-b4c7-367c874be33c.json and https://artists.proofprofile.net/proofs/artist/4e92603f-b07d-41ba-b4c7-367c874be33c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
GATES OF HELL ARE MORE GOLD THAN HEAVENS
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 0xb369658e24904b3fd098697f143f5553c7bf6ddbeaaff88ef8d6f97d7f681749. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZHNB2585848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5774c2b6b0cb7dc40ebdce864d580f51fe0cadb0a89a991e4d2dee625e0ead33. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:28:14Z), 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/QZNWT2527777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb45a7dd2f5d45a4bdae3df4e788adbb43f8e2e3aa73019e9373d55619ab08b4a. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZZ7U2522948.