Trio Da Kali is a griot music group from Mali constituted of three members: Hawa Kassé Mady Diabaté (vocals), Lassana Diabaté (balafon) and Mamadou Kouyaté (ngoni). Hawa is the daughter of a griot Kas
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 0x7c2009a81aea7ca53714d2b2cf3c701366b5994b4237e5b30561479f0e8f9362. 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/dc3d9344-e86f-4903-a072-54e104163b98.json and https://artists.proofprofile.net/proofs/artist/dc3d9344-e86f-4903-a072-54e104163b98.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 0xb29e1f2ea6d07daa762c89b9accb83404e711a800092027e442053d0f8ef721e. 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/GBBGU1793001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa516095ab176acac44c52467f1a2b4d860ca4d3721fa7a12be8aed13442fe85. 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/GBBGU1793007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe15fc5a48c0ae70263ee95d4754ae829fbd7547acf3a264f8e187d3bd5912e5. 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/GBBGU1793002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12734772dee925e9949a21e2741331f7d627a94ea6875cdaf787413a507c37ae. 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/GBBGU1793003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b942b23e942c99a913c77259e7da911dfc16244a9c4e4495647a63593dea970. 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/GBBGU1793004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabacd35b94fea3e1cdae4856b9b3c5f2c2bd7539d132d43789e2f92fcdf62db3. 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/GBBGU1793005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x862518ba00f66e4cbab0101889514bc3ab58912185bb06ceb8e97e0d738e3b67. 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/GBBGU1793006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5e0ec8348ce2733fd5c568b5a45a8f89e35f5a6bd8b6f26fbac392233d4794a. 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/GBBGU1793008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf56bc1193b1bd250ca358d8f59a5a13fcd762d5b12462591beffaa213d2fb6ed. 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/GBBGU1793009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50b871300a16671f6356d95dea2ecc9899da7139e7e81e1817c1633d073e71f3. 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/GBBGU1793010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6088bf4d3ec9afe1f80b7de599191489f686e5d2f84e5c58725208597d7c6ba. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/DKXH72500201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23904e9cb8b3f430a0a6acef43995e49d47bd7cc0de0325ad33595a1619031b9. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/DKXH72500202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10839789bf30891a2bd0e62a69328a91e32ae22d2c2448a7d97145059315ce86. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/DKXH72500203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1e8d6ecb7354e7398c865b473414d716d1a9fb47beb23908c0c05bc0394389e. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/DKXH72500204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ad7107c5d17f765b32303abe15c48b7de1e8c1791d400521d9808ea81c05f77. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T19:27:18Z), 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/DKXH72500205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24f05c32606c8e422f6d38ccd38d3bc0029787b5f6da6633da926bf478346e8d. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/DKXH72500206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d5394cef818a1905066dda2a290aecebc090154aff9e2768f0fa41e242cc798. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/DKXH72500207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5320f51e595a124440077a8e8d0d13fe21e1e2922014b900d7da561bc4b1312. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/DKXH72500208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d7190002e7aa84dc8adfe1ab4e83f907552840ddf86f22c6a34b25a25f4e697. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/DKXH72500209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92d08a2f46b193fc130d02d0d31d57e140d59a85fe4e12090fc341487feb163a. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/DKXH72500210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe880e10adb6952f0ce1c44cc305b119688868277057f4a2c0c137ae4e01474a5. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/DKXH72500211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7e6e7245bc04ab4bd6c186718e154e818ec6d4e25a52271c174985272dc53a5. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/GBCFB2000753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9b572e5d7717ced458b51351ad959ae176f044e5927cb1476baec8c6b83df59. Chain 2 (Bitcoin): anchored in block 960175 (2026-07-30T00:16:15Z), 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/GBCFB2000754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8b18a16bb9fca2c8378415a247d205d2d08f554b1bf2d7d5435252fe4078c8f. 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/GBCFB2000435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8b18a16bb9fca2c8378415a247d205d2d08f554b1bf2d7d5435252fe4078c8f. 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/GBCFB2000435.