Joshua Evans Turner (born May 31, 1992), better known by his stage name Dem Atlas (often stylized as deM atlaS), is an American rapper from Saint Paul, Minnesota. He was formerly a member of the group
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 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 0xd8852badb9c6a50c370619163af05eb6569aa12fec77394228f9f3b0a159299e. 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/335f6a27-ff02-4154-86e3-04e7bb717213.json and https://artists.proofprofile.net/proofs/artist/335f6a27-ff02-4154-86e3-04e7bb717213.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 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 0x3716d6d052314a37d6918006b4a9e04702659eaf1f16fcd8cbe354332ffe56da. 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/USBWK1400237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78366a592c3c82839cd4e89a7998d05d39f36f88caa9ecb610df219edfb8402c. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USBWK1400238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x783d7844ce19866cfd7088f170d373437d254e6e5c5aebd9fca1a458779a3bb4. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/USBWK1400239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa12ba6ba7905aea946838195a6c19c1b61f893f85580a7b7d7bb326a9b801cc. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/USBWK1400259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13ff958a4d73cf346796f645e311ea70a0b46e942ba7573360f735e650bd4963. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USBWK1700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacf154ee6b60d7efa286e47c50d100d0a0afd075b6bf8af4e265a1ca7653871e. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/USBWK1800124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x744b133788fb11758c0aefe5a28b196eed834683e28ae50e340eaeec80e762f7. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/USBWK1800125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cbdd02c2cf15b2ce47013707347234e287e56dcc5c44cc55fdd8596cfedc32b. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T08:01:29Z), 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/USBWK1800126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3feba2eade83071e6325a4b61323054cbf15829ec16cfea7a922408a30238595. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USBWK1800129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a2f362380b23b22f655527517734faea0b2d21369aa64c9a4818e7759138d61. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USBWK1800132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e284f3c24fb0b58c56b1640cad2ed36e8ba13eb55f02ea80b344f2ecb685ce6. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:22:43Z), 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/USBWK1800133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8fc6865ccb0655eeb498e14b0b4bf4ecf6b87ea7e421a906751aba3b970d44c. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USBWK1800135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c1961427cbd0888dd40ed0c50a7bf27601452828b467ed002bb59a493575054. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USBWK1800137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x245c3ca241a4d0d60e3a726b0ee7cff4dd7c112852ccdd0ba3600979ac559b66. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/USBWK1800138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfd4f2492f10af8b8347275e602534e8215b608fbc96675ea8964becd6af4f63. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZNWX2100088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1ceacfceb596bf0a465784781884ecb7a9d59763043841ac664452ca761bec4. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZK6N2177000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1b62acf8771169faaf7edce889d1993af4b09176299f3a300fe93ae823a05e2. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/QZNWT2479573.