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 0xa8ec1d2dc2c872619f0e8d268819009be1c041a5fb1ad56740bab3d65608c95a. Chain 2 (Bitcoin): anchored in block 953592 (2026-06-14T05:36:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/04f70a57-9f91-47e0-af1c-7b01733da326.json and https://artists.proofprofile.net/proofs/artist/04f70a57-9f91-47e0-af1c-7b01733da326.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 0x8f1edbad30088352261d726bf380163ba7ca25f9afb7ed40d55b62e982595164. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZANL1794993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x173321776491c71d44c6202823b70f0a65a7a00076bab6fd12d004b4ad4d337d. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:50:21Z), 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/QZAPG1741023.
Chemical Threats : Phase X (Bonus Explosions)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x174d6ca4d709258d386cea0efb314962dee634ef78311aed5e473bde4ecff818. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZAPG1804541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff2149c8ac5d1d2606f7ce325b873abfe4c59c4536a5d7115dfb8b4f0fd68927. 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/QZHN32491098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b1c816251ed2493e2718845c4335a87f78ab8432b346223e4a28b0305918820. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/QZHN32491100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23e50791f5af4e97844e2fbd45d2f933e3ae0fa08517834b04a7ae2c0cf309a0. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T09:46:54Z), 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/QZZ792573873.