Denmark Martin Vessey (born August 28, 1984) is an American rapper and record producer from Detroit, Michigan. He is also a member of hip hop duo Crown Nation with Quelle Chris. He was named after Den
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 0x09ebbc1e9a9f530e93d2776badc55098a65360dcbc413eba1140ff2ac59f042c. 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/b6a8b528-2174-413e-813e-d72446744106.json and https://artists.proofprofile.net/proofs/artist/b6a8b528-2174-413e-813e-d72446744106.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 0x44150c4fe600c0f4816cad4869c0dcdb47e522298c9f946bf769e3152bafe1a8. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USUYG1081546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa72dd0a0e173971482f9ab3748ec8767df19b3008730cd1599461e2ee8f144b. 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/USUYG1081547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0be9db5ecea7514a151ef410d96a26f28880b9df0ea7a28431159f81673528a0. 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/USUYG1081561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcabd6e6e04da521f2863fbec1609debe9aa4353b8078b4e53cd4edf8de0b3a7. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/USUYG1081544.
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 0xbedb00ef5508c442f9dbb098c733b372f07218fd6aec4f58435eded2ed33e75e. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/USUYG1081545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcffee91e028503de5c5b716950fe74c7d3dcdef6bca0c86adf37ad21235eaf12. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/USUYG1081548.
Think Happy Thoughts and Keep Your Hoes in Check
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0182d1585e899869e9c988c40e57d9ea1a825ab630d759df86f0dfdfc7f0b8b6. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/USUYG1081558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b71231f2051003d93d73e462a37df4b156b219bc87aaa0fd2995df996419710. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/USUYG1081559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ec0698babf085e39dccdc0457d8aa3f2b2125be0fcdb075abfcd17c5a6edbf4. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QMDA61849555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7530f1b22092866f617da01c0d23658a96619161787d5062e8c0a3edc76f675e. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QMDA61849556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7928541c5109a73b7b4ca2888d1e0a21c2b0d887437277b471ab4c8b6f63d853. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QMDA61849557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x896306ef53efd0a0fd97039da1c85b3d0e5ca07ad331078fb48f6e0c480e7c49. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QMDA61849558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c869fb42f8b9cefd0c3160d571c7d5df03a3f8a6d1c5adc686743fb5121c119. 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/GBMYF2200168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ddd288b3c1f0033cb5076e20cd053d3c10611a4725306d3bc69abb4250118d6. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/FR4EO1400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8b181d5ac82c604ebd6d0e64386c1cc0c14e710c8dc5a82a84a9947d08e3935. 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/QM7282367580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ddd288b3c1f0033cb5076e20cd053d3c10611a4725306d3bc69abb4250118d6. 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/FR4EO1400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c93b52a8399fec4787f93e91780b6d68438dc74cf7eeb61e66fbb4fdec7c68e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FR10S2296169.