Malachi Green (born November 29, 2003), professionally known as Yung Kayo, is an American rapper from Washington, D.C. who is currently signed to American rapper Young Thug's record label YSL Records
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 0x168e8a014a7ecdc3a6f7674425331cb160edeaee4139b97b428693a9a2661824. 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/3fea434b-e8f9-4fe0-aaa7-7e4ab4bade86.json and https://artists.proofprofile.net/proofs/artist/3fea434b-e8f9-4fe0-aaa7-7e4ab4bade86.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 0x676c581aee1230b3a9f0d9fca5dba34149686adb5c509ff0599603f50ca95ad5. 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/QMCE32200037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc35f9623e0333cd50706cb476f05b02a7a74d9d6010c20cf01052c6d88ade6c. 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/QMCE32200109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9448659d650914d0e3e50356e283592466c501e8b8e1e057881ce72f5413aeb6. 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/QMCE32200110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x222d4de3e7930617381aeccbf036dd6f7a16868ebe6dc955533b16fff01c88a9. 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/USLD91738983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0751c97b4fed7fe866c733afd41fd4e705c328bd21c4b7d11228434f5a5b5889. 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/QMCE32000585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x984def5f494f01decb1bc71394ba7adb80dc7f3f8b71044e99e93fe8e1a61083. 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/QM4TX2497128.
Proud of You (feat. Lil Uzi Vert & Yung Kayo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7e4c199884baaf829679bb5734d65b51254f9360050d750cae69f89189c5835. 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/QMCE32100201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x549b8d55f3f83b722ad36f19313a66af686695ff47aa732211fcdb1b9f656020. 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/USUM72202112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x372edc34b5e4b590ae4d63359790762dedcd4dc15349c1b38e96454ce045980a. 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/QZK6J2354637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46b48be533aed1ab1c71c3a7ef643ccc759747273dfa9bcdde612338d7b15e57. 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/QMCE32100022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7e4c199884baaf829679bb5734d65b51254f9360050d750cae69f89189c5835. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QMCE32100201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x754bc12bb2677bd4b27803fa1f203590095319b2cae571216e070bb632346b76. 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/QM3DF2266757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb4256243ae409cf4d5571b20d79c80ff3efbbfd17f2f1b7429275ec494bc31e. 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/QM3DF2266748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46b48be533aed1ab1c71c3a7ef643ccc759747273dfa9bcdde612338d7b15e57. 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/QMCE32100022.