Martins Okey Justice E. (born September 29, 1979), popularly known by his stage name J. Martins, is a Nigerian musician, singer, songwriter and producer. He is best known for his songs "Oyoyo", "Jup
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 0xef830b78d8f28c6f3b17f689563a0dc016b79df2d6b99ddbbac6b88c29ffdc26. 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/4b7e42e4-7d6f-43cf-ba97-0db2e543f6de.json and https://artists.proofprofile.net/proofs/artist/4b7e42e4-7d6f-43cf-ba97-0db2e543f6de.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 0xd0bdd2b7f32efb6ebba806edb19986dd0ec4356a7f25480f6e8dbdde231207b1. 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/FR10S1669808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd634f8da070652d11e56fa29a5b30c63c2760480c384b696c32a5a4e02860021. 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/FR10S1669809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb90d3efbb52f4f8e2277b6a1722e765ce53a85bb06a9f3224d83b6889ed4d443. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/FR10S1669810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb7fd28260f6b8a1338972c7f8f1116ce71c2c004e334f576c3e60c9fec72e63. 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/FR10S1669813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01d27753fa56486d834549d4b6a0c6db3e5aecc53280397413d7101a484f9548. 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/FR10S1669818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd25d3f752a13ddd7630ca8e330cb3216316c52d087b3720973aa10a98f21c2bf. 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/FR10S1669820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b880d506d03ebe8cf279ed6178f75efb4bca7724766262a7cf4a2e6ecd840ec. 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/ZAV491200295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x833a12f2c1bf83ee01a5ae9c520ed770f97174e40bbe8425246bbc38dec4448c. 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/ZAV491200296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ba1a04d32cc980e46834bd2de5658fac219abde10e40a11e88d81989d5decb3. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/ZAV491200297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07c0555f781224521c053786484fc1002ca1d8e48742b80d274748100c2be624. 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/ZAV491200298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28c2b820b75dac4c0c148ed696740c8074ccb7c5774af2469ef87da50585a8ca. 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/USA560873663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98340182d2215668d02b2e763ebbf70422e576f8a41830baefdaed3f12e5fc69. 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/USA560873665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23e14443adaf3124a681f020b4678edf0c39123efe4987819d939cfac9301aac. 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/QZTRX2265812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a4ab9e18a7db566b112857f8ca4a28205e0832872cbd3d96bad6804242a5324. 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/GBRKQ2228092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ddad9038a4a30e36f2ee81ce98a8fa405771ce8ba9f9db604e907c89d6f1119. 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/QZ5FN2244859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76d41c0004a098a054dbd7e1982bc087dd9a8bb101d994c8a60d0bbd221a64d1. 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/FR59R2196384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22e61b37d19bef3cd0fcca1d6b9e9ab49b6402072c3f253ab797c616868fbc5b. 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/TZA1X2100319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cd5def1882a07f58ff65cb04c1f1ce8947c0ecc0f0492e2743ef1cc33e0fd63. 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/FRX761598333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb544bd8bf9b965cfa26845e67d43d62fff97ec36a0b49624fbef9e92d6a498cd. 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/FRX761597994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a812608f7c2932fb6aaf0fbd478074146d7d8e40bd58985ea1644e1379cbb74. 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/FRX761598016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x322e01bab492fa4a7f7021e26076cdf7b237df685927e61aab3e8b8f1f4eb4e8. 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/FRX761598015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f5c79f5b812f0a965168eb65cf71b9946c413f863603b3b02f01f119d5d71a8. 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/FRX761598059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9f1da560e8b7005013fffbfea7738e4ee86f69698ad790a831ec1a1fe5633eb. 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/TCADM1822977.