Andre Deer (born 16 December 2002), known professionally as Double Lz (formerly stylized as DoubleLz), is a British rapper and songwriter. He is a former member of the UK drill group OFB. Debuting in
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 0x17b4bd7823303b96975e26520621d21c546dd6fa579ab4d86a98385bfbc934c6. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/50566371-963b-48b9-8ad3-a0a9a9ece438.json and https://artists.proofprofile.net/proofs/artist/50566371-963b-48b9-8ad3-a0a9a9ece438.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Lean Wit It (Remix) [feat. Blitty, Kush, Bradz, Kash One7, Akz, YF, Double Lz & Bandokay]
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 0xbbd8d1ccdf08f24aca66ad9c16db728bd3eab8464d22dac98b6d6c930433f06a. 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/ZZOPM2119304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49eab5d438e1a14664f85cd316426fd64a7d387a3e6de177daed93e89ebbbd29. 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/ZZOPM2119211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe485f9016d55496ded5703e69f985debd209fa7ce5ea1a992af445d9a4ed7a4a. 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/ZZOPM2104545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e7e01e344fda2fcc5719f86d10259ede9b04aa81d924f1613399a5524bf0e5e. 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/ZZOPM2104756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54fb8b8929fdd21a668dcf8e669701acee73467ef74ccd339a4c817e8ae3d769. 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/ZZOPM2104757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b05686b4cdbfb1d750686a114a99643f23ba4b8e8fb8f2560fd9ea70aaea8ac. 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/ZZOPM2104760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfad571788f0afd9dc624453f532f93ec0ff6c7a848a3cc3584f8db7881a1d22c. 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/ZZOPM2104759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x918cf4f0d3c984b91f29b92c456c90c2a728b5899402aafc70deefab2021962d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ZZOPM2104770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb156499d2796d082e3ec0a89ddbb33c7da3555c3df7d384047f425186cf42bd. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ZZOPM2104776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb009f5bb133f4bc876b538f5af74ed8cd34ab540f5227f8365beac0991939724. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/ZZOPM2104772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d48fd9192f76a6e3b668920fd01b855b0cba33bd434fe5f0aca32067d51acf1. 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/ZZOPM2104774.
Farm All Stars (feat. Akz, Dezzie, Izzpot & Dsavv)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15e4d17e819de5b2b24534fa71399ca520dc4bc5741db50262d83fb47a4e9fcf. 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/ZZOPM2104765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebf6bf466ca9995f8389cb75f09eebe726214dc768035e9883d7a9622c517ea8. 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/ZZOPM2104773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86a7e3ddb703e94de1281abccf54e7979da2fc5d69f19cd88b891b5854a63885. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ZZOPM2104775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x090eaffe03a2fb0c509ba913af815014fc96981def25a933d675d3c1e6ce25a9. 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/ZZOPM2104768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad0d54733bf54629dfca386470116f62f0650fc807f925f0fc2ef9214f2d0f36. 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/ZZOPM2104769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55b48a43d0db9a3eb590ed17e6cf981dcf9826c4319d8473b8b22ae01eb2a55d. 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/GX3Q92339953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd03109c6e17b629174f95237f9f35ca1a14cde4fddcf38d53b3f6ee021015fdb. 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/GX3Q92327002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb43b19a21c9ea753900d40d35b7a48d20d03bacc8438222c50598a7052a04bde. 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/GBCUW2100075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66b90ef585c795e5498965016b5bc6802c0191513b58686b385b567999ac207d. 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/GBARL2200205.
Circles (feat. OFB, Bandokay & Double Lz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eeda092724a51ecbaa8508ab7a1e1499adf87de33dcc5b735acc4e11bda3b5c. 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/GBARL2000737.
Basil Brush (feat. OFB, Bandokay & Double Lz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6387078e1f8778f6c08b76576bb901e3b691f454f69f4c909a6a0a5204fb15b0. 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/GBARL2001336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c9ea90a58ecf6e05c6b36be9cb0628f863a6650f050cc0062202b88e7e7162b. 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/QM4TW2127469.