Kora Jazz Trio is a three piece African musical group, founded in 2002 by Djeli Moussa Diawara, Guinean Korafola, with Abdoulaye Diabate and Moussa Sissokho, best known for producing a music that is a
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 0x73973dded3478da1cd501761a00667dc3515450a755d64134cc90db31f8645b7. 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/da40edfc-8342-4674-9887-c652c9c2efbc.json and https://artists.proofprofile.net/proofs/artist/da40edfc-8342-4674-9887-c652c9c2efbc.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 0x1ff2107241659b38cb926aec751ffc29ce61d1335256f25b64ab466f6b1768df. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FRZ550500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ff2107241659b38cb926aec751ffc29ce61d1335256f25b64ab466f6b1768df. 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/FRZ550500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb80424072ce085bfa5c8b0bb68e651de49cd2e44d354afa9c629d7f378a4662d. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/FRZ550800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4ab9882b9f1eedf9a881439134764bacfd39560c7c121dc3bba99b7ad3d5e19. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/FRZ550800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd8ce0a3c941ec120d2e4297686566382fc5d44a78d9c6838eeafad5ad850916. Chain 2 (Bitcoin): anchored in block 958656 (2026-07-19T04:04:08Z), 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/FRZ550800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfec896252c855ed9e8e8ffa3108e53472b1aae2b36d0b0bb117e0704a60e34e9. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/FRZ550800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa30e1ff83133e8aeb06517688ec368e43fbec7c8c0e2178260fa360552fffd8f. 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/FRZ550800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb80424072ce085bfa5c8b0bb68e651de49cd2e44d354afa9c629d7f378a4662d. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/FRZ550800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4ab9882b9f1eedf9a881439134764bacfd39560c7c121dc3bba99b7ad3d5e19. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/FRZ550800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd8ce0a3c941ec120d2e4297686566382fc5d44a78d9c6838eeafad5ad850916. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/FRZ550800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfec896252c855ed9e8e8ffa3108e53472b1aae2b36d0b0bb117e0704a60e34e9. 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/FRZ550800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa30e1ff83133e8aeb06517688ec368e43fbec7c8c0e2178260fa360552fffd8f. 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/FRZ550800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cdefcf8bd99b15ea9638a7948d13bb828f143531bc3757e96082649827cd44b. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FR5KQ1700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb01e8755a5ce54e104bc901d1cfc106e3d3655fcf9270d3637bf26e04e77efc9. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/FR5KQ1700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x249d1d043114590d8842c9ea7681097d7499c0e582e971fd21eeb611cadd014d. 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/FR5KQ1700005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c758617635ad317da8eecca1540f1ebafb6b4f9c0953327c2877e5b3af061f5. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/FR5KQ1700006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe66e21e35c13410ed8249131a1987bd019e30cf3b69d10a71ae98487255be1c9. 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/FR5KQ1700007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3104779d7a1bbc39fa9e993ac695c711f2b62db8bc41bed55c6f9958fd4fe1b3. 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/FR5KQ1700008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae459cc732c8d33d97dd8928995b6251f7f8e5b4414172dda801c97954a0e952. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/FR5KQ1700010.