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 0xf21639fa1a54a8e2d8727023193d137b13293ab4db8a249f8a1aee6b1caf99eb. Chain 2 (Bitcoin): anchored in block 954728 (2026-06-21T18:08:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fb3cacd6-c65d-4917-b771-ce745a5bc508.json and https://artists.proofprofile.net/proofs/artist/fb3cacd6-c65d-4917-b771-ce745a5bc508.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 0x05e2827ee72521e46e637598d37ce8ba6c0005d55b13eba15fc7315bfe1ccaca. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TCACM1604746.
Grind Mode Cypher, Vol. 9 (feat. King Blob, Chester Green, Rizzy Reem, Sionide, K Lo & Flawless Real Talk)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19cb13ae2867363e4f82eaa2bc5148cd31ee31ccd3d201c89afd1bd3cca29924. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TCACM1631120.
Grind Mode Cypher, Vol. 18 (feat. Rudeboy, Tyler Castonguay, Skom Brady, Tro, Pr Drone & Protege)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb53540d9a77b8973fefa32ef1fc2a7cc976e32c211cd57cc77a32a2bcbfe369. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TCACM1631155.
Grind Mode Cypher, Vol. 30 (feat. Dillinger, Chris Styles, J Mac, Chubz The Rockstar, Mass Of Man & Big G's)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfab74b1e3b9bacf7e3d40a57aa040d5bc3f9a83792eb77df53aed0af9b2013d1. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/TCACM1631196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ae1cd882bbce0f5e0620ff0ba12ad10f00404b22506a5462aa7830f0cbff45e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TCADT1899957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x644282811fdb6c099f6438c231d45bab83c3d38df7dfce1ea4b328c1e39a9616. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TCADT1899982.