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 0x6110440f48126aed9597cc3aca632f071d254f88956dc5cb13bc4fbdba71f784. Chain 2 (Bitcoin): anchored in block 953773 (2026-06-15T10:40:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cac740b9-3c89-4f44-889f-55f4c19621af.json and https://artists.proofprofile.net/proofs/artist/cac740b9-3c89-4f44-889f-55f4c19621af.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 0x0f583c1cf83c14172b6b3cf4daf6dfc75996b39a938b7310507550b6400cf9b3. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QM7282027193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eb291d48606a989441665556be61f6ea02d664b98b77f0d949c63606a51b591. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QMFME2050404.
Lean Wit It (Remix) [feat. Blitty, Kush, Bradz, Kash One7, Akz, YF, Double Lz & Bandokay]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbd8d1ccdf08f24aca66ad9c16db728bd3eab8464d22dac98b6d6c930433f06a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ZZOPM2119304.
War (feat. Lowkey, D1, Headie One, Kash & Bradz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6be028b4f268fdcccce9c6648c411036075426a3025a6c7736c6f66eba55cf7e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TCADK1702784.
Talk Is Cheap (feat. Lowkey, Kash, Kush & Bradz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99c471b7f79c74ac699627cd340206cf7784dc097bc1dc6f6aae31b6afab85a2. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TCADK1703699.
Dinger (feat. Tuggzy, Kash, D1, Bradz & Kush)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69d0cc1692843ea3ee7386be76e03bf64beff36c40ff0e41245112724026d230. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/TCADK1702681.
8 Bar Specialist (feat. Lowkey, Tuggzy, Bradz, Headie One, D1 & Kash)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b57e43d559ea43d71cd2838837384d862d94da15859f642e34b3f58cfe41438. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/TCADK1702735.