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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21e73b5004ad967b74546ebfe6db65dee171c43b9af9a100960a5cd65251ef6b. 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/36f93135-3e15-4c69-a6b1-482fecef57b4.json and https://artists.proofprofile.net/proofs/artist/36f93135-3e15-4c69-a6b1-482fecef57b4.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x494ac4ec865e9a0e68221e60dc1310f2802ec6608be6bcf522d66a62a5d9ad51. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/QZK6M2440155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbe291b299ff587a9f3958ae96e94c737cdbcb0e5277717f9d09a98592ecb3fc. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/QZK6M2441324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d8807de0825bd6f47dbe833bbb1d6c8ef1adb59485423ee6136f3f984223e31. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/QZMEP2427495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66f610f34c433085afb40e26990ebe877540241f78ab37eeb33c0989165e9b94. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZMEP2429298.
CHEICK HAIDAR SERVICE COMMERCIAL VOL (2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc89b08d34937d98c11755e227ab08d0e1c8bfbd1c252a0a51fd28e85e10076ab. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZTAS2467065.
HOMMAGE À LALABI GAOUSSOU KALILOU BERTHÉ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f9afecc9f72cccec3a561535f79dadb1e7d1b4b1dcc715c870c467cd26ada31. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZWFH2437005.
YELLEN ÉLECTRONIQUE MAMOUTOU TRAORÉ & FRÈRES
Cheick le chinois (KENIEBA & BAMAKO) vol 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7729bffa4b9a0c9d872bd2c5bee8f41fecdcb7d624a18e118c568ff239523080. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZZ7T2483912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf20c88fd64924638622e7ee2d5954ba0da939e4fb4c8d58c2492fd348bda0dde. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZZ7T2464486.
BAYLALE DJIGUÉ PDG DE STATION CORRIDOR VOL-2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed610d92b9a6e871a76edf1868ea0ca6e2f2e8a2f7205caf4adaeba874922c4f. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZZ7W2459027.
N’NAH KANA KA SI (HOMMAGE À MANGALA CAMARA)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13a289c960d5ee3fd0e254c8adc1395b46696faf84dc5ba98cb9ea2fcfe10b0d. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/QZFYX2518252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdef00b4c1edea520bd61f8ec78b6469300fc34ae574d81bd307a499ac8c02eb4. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZFZ32549482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x132a1fa1af70a08061a97903717cf579664eafd6c195d673cb9d83099c3b3be5. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/QZFYY2579074.
ADJI KA DJIDIAN WEZZY ÉLECTRONIQUE VOL 4
REMERCIEMENT À INOUSSE KONE LE BOURGEOIS VOL-2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d78d916898f6398a6366f72c8a181920ef42f4e7c5a1d6d9e4b22cfa974f2e9. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/QZHNA2558583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a88d1c877ed427f1dd371c8064f044fe3afaea0378a42c2e85c7b60d6a96e5e. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZK6G2515806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7caf3d7dadf5ae4a82aed399cf56f9e16b2aaa6c0fcc678686ca797453e4a7a4. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/QZNWS2522325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4189df5cd27446353a3c64c36a2d80ccb94a4eeffb7aeafbcd589cb84f84985. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZNWY2511191.
BOURAMA KOUYATÉ DIT BATA SERVICE & BATA SÉCURITÉ
DÉDICACE À HOMONYME MAKAN DEMBÉLÉ DIT ADJI ONE CENTHIAGO
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55eba13d98fdedf9a784a76acb12086d5cc848bfe271333cccca99438a911b2a. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QT6E72599005.