The Lords of the Underground (L.O.T.U.G.) is an American hip-hop trio based in Newark, New Jersey. The group is composed of Dupré Kelly (professionally known as DoItAll) (born January 14, 1971), Al'Te
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 0x28a9fbbb8b2a44c91857205523450a1f4893aafdafbf830bda3019b89c1daf08. 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/68c73e6b-080a-451e-94ba-66a9ad8987af.json and https://artists.proofprofile.net/proofs/artist/68c73e6b-080a-451e-94ba-66a9ad8987af.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 0x11d2adceb375c66fb90b878a840d142e6912c55de4358b072471ae8aafe6668b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USCA29401347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6ea76100a1cd3f78d40057a946be6e70eb6aca20775d751752bf5e0850cff71. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR0Z50023304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bb46c8212b20fb4bf38c70c767b7a3d615408b0584d6b52639c95f700465a3c. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/DEZC62361537.
Good Lord (feat. Lords of the Underground & DJ C-Reality)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x001ee16c8cea6aaaf9f44821595b5c92383966ff15da481c251526523589be52. 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/QM6N22151735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x001ee16c8cea6aaaf9f44821595b5c92383966ff15da481c251526523589be52. 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/QM6N22151735.
The Ultimate Old School Hip-Hop Album Vol.1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11d2adceb375c66fb90b878a840d142e6912c55de4358b072471ae8aafe6668b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USCA29401347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11d2adceb375c66fb90b878a840d142e6912c55de4358b072471ae8aafe6668b. 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/USCA29401347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d4b4d053fbf4960a03de42cdcf4bc44345df783488a1e3bf19f278b86962652. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FR8GV1831270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00e17e0deb83405b47b19f76eb3aac0cc6b42da9601e5db8f4731c00c500e178. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FR8GV1842770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x072f56434f148b4a62f2921b04956611e286fad3b52de98caaf4b6f1cba5a9e5. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/FR8GV1842930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45c088d5940a83732f8ab4e1a9fd98db2f456004a575bc21af434d1b5ce2ce29. 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/FR8GV1847450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d7c392b04890475ea95a5f068d3c8a8671e4e473b18e90416c1d3321489d81f. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/USCA29301607.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ddce92d82deb0e359edef82f7e58347c55cfce31eb804dd741cab619ad803f5. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/USCA29301651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03eb24e590f6043a5b1e71af484e582baa1c8bc7d059ab558754f6855c78dfb7. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/USCA29301650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x682f3b1482ed24ef8688804090e6f01868309ef1b1e5797791c84ea70441df74. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/FR6V82556285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5f9b9a7fa567d4f6e4f62cc0dd4a56abb3636f41df87990530c0aac09ac960c. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/ES8620800610.