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 0xb8709937bab931a998bda8a417065dda6b0111102841b195b8a00e65c2d1a5fd. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a198a054-81dd-4e51-a75f-184e6eb2036c.json and https://artists.proofprofile.net/proofs/artist/a198a054-81dd-4e51-a75f-184e6eb2036c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Hey Lover (Mike Sherm & Macy Gray) [Chopped & Screwed Version]
Here To Stay (Mike Sherm, Christina Milian & Jetsin) [Chopped & Screwed Version]
Worst Way To Go (Chopped & Screwed Version)
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 0xc283601dc5027316ff86f7a372507aee0a82b1916a5b649ef0dfc3a042973b83. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:46:40Z), 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/GX5MX2417178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71bb9a867d09acd0d5d8f80e910a655685185ec7b44f780ab8d5a62d057a28e7. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:05:27Z), 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/IEWGI2517145.