Leak Bros was an American hip-hop duo consisting of New York rapper Cage and New Jersey rapper Tame One. History Tame One and Cage met through Robert "Kell's Bells" Kelly on the now-defunct Eastern C
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 0xca85b74668219cf73fd993b90f825259c863dcf4c2378a34ff7b654dd81edb7c. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7b58536d-a132-4e80-8248-05d5c0d5f1b3.json and https://artists.proofprofile.net/proofs/artist/7b58536d-a132-4e80-8248-05d5c0d5f1b3.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 0x7a211adfe3dbe45058340f67c4ee2bdd20a36e47c88af88f3893669fc96314d5. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/US3V80410236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2213ce1e125df8b5c7a12d452c82df53e2708e497714c1fc642db709700bda2. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/US3V80410237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7129b2dbf7aa9631f7ea0911ad174158c61f4932bff5bdad3cedb2636f9d6647. Chain 2 (Bitcoin): anchored in block 958681 (2026-07-19T06:14:54Z), 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/US3V80410238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fd35fc108e901ca8eccc0054e086b5e99984c8746f838545236d1ec6fa6c498. Chain 2 (Bitcoin): anchored in block 958963 (2026-07-21T04:02:02Z), 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/US3V80410239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc68a9c3eba1836cbe8eb52ddb051fcb489b1aa1355bae76664fe1888ff1c7b61. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/US3V80410240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb303feb3448520c2766694a4fffb7ec339d9be05f97af5fccba9cd19301857a0. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/US3V80410241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdddd307103f7957ea851b4b9dca39e45234e124a26cb9a6f7591912dacb1479d. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/US3V80410242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe33ade74a1bd842c541048d67df3da231acbf93a94cc0e5cb6771dc671101e67. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/US3V80410243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24f7ccc5a7cd85d8203aa9f7e54c401822cfcc19f8868a625af3529b960d69f2. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/US3V80410244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e70a1ccfd5e99e38fef6c15414f30abae0d9e0f89a53509727e0ec8e203e718. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/US3V80410246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58415deab813cba61b69fda302819e6f985098b5d6016849de2ca256352c0e0e. 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/US3V80410305.