Mthembeni Ndevu, professionally known by his stage name Emtee (stylized as eMTee) is a South African rapper. Regarded as one of the best and most influential figures in the South African music scene.
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 0xd4b2aadbe137e72b5cc56ce69d65ec2136e09bb945cabc0fd3c1bb18e8a2d3fe. 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/fb258e2d-ba84-4a92-b11c-73ff66c38ee2.json and https://artists.proofprofile.net/proofs/artist/fb258e2d-ba84-4a92-b11c-73ff66c38ee2.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 0x8804df41debafe216c87f1dc57770c2765020130dcade2f1d53a40c781286403. 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/ZAEI72000068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2bf579b68ac7fbb0fd0801467be7ab611b747180170dd16347d263880ca6e60. 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/ZAEI72000069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74875eb1a062a28b7da06f2733a32820cfebf55b5a0a1c9706f9bafdad605dc0. 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/ZAB7A1500013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffd289f61f918f7566856b4b3f98d2e12c86a0b48839981fcf0e76060ddcb3fc. 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/ZAB7A1800291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37e59b3743bc93934650fc4d6572bbd00eedbceab6eb2e857708d3b3120d1b2f. 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/ZAB7A1600125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a4e14daf095a24db23aafbd264df94d3bb569e1311a2d5a54b4669f4c0c5bc8. 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/ZAB7A1600091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91350a31886bb00c49ac403b6a544331e8ecb2cdae2ce5ea99bcc6a139ea5a6d. 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/ZAY362200770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8da73326eebcea951c5adf5f8fa8cc117f095b946cfbb5fe32c0826542693507. 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/ZAB7A1700244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x342499bfeb63f7339c5e86525dbdb59802e9f2c234bfd2697e42ff210e9e0059. 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/ZAB7A1500014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e8cf45479b3a69e8eb0b6892ea0eae002491316880d672e1537e2e5d6304847. 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/ZAA012000380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb0a54fe4984d643bcb1a84bc9a10a67dd4fe39bd3fc94bfc23ad5acfb6c247b. 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/ZA34K2100496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9e12aec56f8c40c05af3727128f1365b32612ea695cc14841fd379b63b4ee13. 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/ZAB7A1600044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a694400d85c8a02234c947c590ad0ddb665411d063b6667cb592d6b02d6f1b6. 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/ZAF991600192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x264938dbf5262e88ce4c6ae471ea4d64f2c85183f7d7da7d3f927c01ce847819. 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/QZMEQ2118231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb872afecfda6572d27bfda363881c1fe5f531a7040ee9e9baaa709eaeec899d8. 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/ZAZ6O1900017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5052ba407584bb81cb63e1523638e24c3b2eac353947748602be915efa524902. 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/ZA02L1200042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9330477ee809d98b15e5d19650f04c4102234964329ffcfd3c2c2b77d61d968b. 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/ZA02L1800030.