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 0x58e8f70e90976fad28166dc8b4d729839ece39779c61008b1cbfda6d239a537e. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fea3e863-0bc2-4817-b1ad-142479278907.json and https://artists.proofprofile.net/proofs/artist/fea3e863-0bc2-4817-b1ad-142479278907.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 0xbdb7b8c7c4dd27db88c2d20daebd2b3037f98cde2b1933654d9d440e8ec87b3d. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/QZHNA1956413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82e597a4bef9f2f7b77156f1013173af206a053d45bf41b09027b4a75815256c. 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/USHM81457136.
Same Crew (Remix) [feat. Young Dolph, Def Loaf & Machine Gun Kelly]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ed18033da45e95c5603dde0d2ef08bf547ab652b294f0ec808e8a7895d3f9e6. 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/USCGH1681560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dfcab5c6492c429b7234e9d52c4b8881d69931e99b72953e6233b1b4c8e588a. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/USCGH1681561.
NozeBleedz (Remix) [feat. Fabolous & Ripp Flamez]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66410db608e46b87d512edba7aa4a3c8bdfbd250ee96ada3a39e2a4c246d415c. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/TCADD1710522.
Cleveland Is The City (feat. Caine, Preme & Tae)
Krayzie Bone and Big Hef present Cleveland Is The City, Ohio Is The State
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cfa01da1262e6a5597a4932d4ff99f31fa7021b3f243435ffca3aa23ed4fa6d. 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/USLZJ1706380.