Arnold Martinez (born March 29, 1985), known professionally as Lil Duke, is an American rapper and singer from Atlanta, Georgia. Duke is a member of Young Thug's "Young Stoner Life Records". He starte
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 0xe10d42a80d4b3f155620b8741daa0716416b993496a7c314cd5b9ba89996a75c. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/74f67466-4ea6-4184-b76e-af041a375b51.json and https://artists.proofprofile.net/proofs/artist/74f67466-4ea6-4184-b76e-af041a375b51.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 0x504453d231d10b3387600de194efb02f2faab6e753247a550aba93dc08cd007a. 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/QMCE32100482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63dacbd06f65d9f53623cb5d3210d97c052274b6d0f6b90a7abc8edb5394020e. 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/QMCE32100485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefd394f73627cb5ffc1abcfc2e54b12b2447d81b44a3df432d03a1ac46c65fcc. 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/USUYG1169125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40c215dc5e0caf4979cfc04b59f14dc114990d993c2740d9347bad8cec13013c. 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/QMEU31908359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x574fc73230c6e72b4aea525c61afcba114a1b8ae384fa812769634caf461deb4. 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/QMCE32100197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5532a78ad5223f5835c41bf750d66bbabf0a5e0685b59956cb4e5f4572de2b9. 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/QMCE32100205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd22fa68ca7d81df8b6621de47b971015cfb1134bcbd9bf036cd8a26e722951ac. 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/QMCE31902275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf12cd3a05c7564ca46789d1adff4734f00de659fd59ecce76aa01e79e4ae8505. 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/USAT21904716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d8fb13c9500b53a0c97e5dca98dbd39a3050eef43946f7e065f8c18ca448b76. 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/USRC12001472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b6a275ed6650092993c6d1e9995be74ba3307e2508b21b64b42dba881aa3042. 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/USAT21904719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x574fc73230c6e72b4aea525c61afcba114a1b8ae384fa812769634caf461deb4. 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/QMCE32100197.
Good Intentions (Brown Boy 2 Deluxe Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf624b82ca7547ccdd8a9b9cfc2cddf20209dfaab632458926580353dc52b22f1. 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/USUM72010316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf12cd3a05c7564ca46789d1adff4734f00de659fd59ecce76aa01e79e4ae8505. 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/USAT21904716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b6a275ed6650092993c6d1e9995be74ba3307e2508b21b64b42dba881aa3042. 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/USAT21904719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5532a78ad5223f5835c41bf750d66bbabf0a5e0685b59956cb4e5f4572de2b9. 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/QMCE32100205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d2fbdff6364b2954a4475b232e1c838d547d43191195e9744ee1244c3e1d1aa. 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/GBUM71705419.