CASISDEAD is a UK rap and grime MC, record producer and music video director from the United Kingdom. Born in London, possibly in 1986 — as suggested by the track “Leon Best” on his 2012 mixtape The N
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 0xc4a8082dcdbd6c6faf41e81dcf6008bbc79ecea99d551adbb7e2df8e506e0e90. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/49d4327f-178b-4da2-9387-6b863c3d37e0.json and https://artists.proofprofile.net/proofs/artist/49d4327f-178b-4da2-9387-6b863c3d37e0.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 0x5b0010cdff34b004571eae67539f4de9821c45b5d2651474e8db670703292453. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:49:22Z), 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/TCACP1685264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d1d621ed05e864dfff3da4c6ee8ee97d8de5aac5ed6dec6d6c908ac4b541a81. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T09:49:42Z), 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/GBBKS2100164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c529d8ec2c57204cf21861d4bb2f1a09a21755d39c90b0a350cd4cc03e81bfc. 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/GBBKS2200330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x949d2dea75b290e53cd6a067b42981a24c663d4639ee3e91c7adb542b73263d5. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/GBBKS2200335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2eaeb1a85cce97b982895acdb0615ad096dbc38a11b81dab88301955678b1fc. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR10S2038897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f079d8cfbc0d41f944b9a37be98ea3eab1de96734fd44ef29c1889a080e545c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEG931600927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2eaeb1a85cce97b982895acdb0615ad096dbc38a11b81dab88301955678b1fc. 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/FR10S2038897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a3d90ba92f23fe61ceeb5704eca1e33c4ce2909812b62b7cefa9660336a2097. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GB7QY1600099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd94a473c143631e722196bfcd20f4c0e3f1b345ca7fabd084a76e7f72cd3339b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GB7QY1600102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbee7c133381f47ec7993c449540827ecde3c1b95d24648872b720b938c0ce49a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GB45A1700529.