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 0x0c4fb718916e76650926092e541a93b0d1d6f1b710605faf89876c212c767f95. 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/554585ff-b642-43a9-8546-56847e13b143.json and https://artists.proofprofile.net/proofs/artist/554585ff-b642-43a9-8546-56847e13b143.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 0x5029cd8fb9311fc083235dcb4c689457e3bf27b189048a8465d5821dd7ecaec2. 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/ZA41S1422328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3e0905515da83e90ed24353eee95071bda4fe3a265d35d4ed6f4864fd92ecb7. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T16:15:11Z), 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/ZAZ941204778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x699fe6fd870c60216d0cb1c5cc78e9f18b2bc502057f0922302c054033fa4cff. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/ZA41S1447699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf78dc9d0ed4e9a8b8bbba5e7699393b9e3987b04b6e53b6d4d1c64375424be3a. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/ZA41S1447701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18af5fa6af9af2f25557bffcac77ef288be5b9d28cd72ca61ee59d426ee4a121. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ZA41S1827990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21622e2d4280c6d003ecf789d1ca157f9e1c5c269a3d2698bcf79fb7d61c6039. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/QZHNA2044072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x363c88fb0416eeac2a9045f3c7439ad78c714050f9e42de4e037ff4a9b42c528. 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/QZK6Q2075712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf60f576fc0abdd4ac7308ce7d859c7c9374c51b1b35f4b08b2105af51b25fe9. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/QZPLS2025739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39d8069a361320c70bb0aad074fb39a7bce2592739b9aa7f2ff2969002ca62bc. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/QZNJW2217291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc244abf462cdf674181bc1d2a4361eefa4ba10d89fab3d995274b5d4ff1c923. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZNJW2217292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52af9b228a23d4b1324867534271e2e61b6fdcee64ae59b8a974c5f6a95d070f. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/QZNJW2217295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5234ce5da18f1ec68ce4106284a4bc25baafb72c2734eb8500ff27cc0c1c4517. 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/QZNJW2217296.
Chisola (Cox The Rap Daddy) [feat. Neo Slayer]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7db29d53d0a206a05df761622979af06fc56b223f519f4556e8297c4339ba6f5. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/QZHN72391534.
Lost Generation (Brokenhill Emmy) [feat. Wezi & Bornvicious]
Nimwebo (Thank You) [feat. Ephraim, Reuben, JK & Mr. Phil]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5e21129d51464b0317fa61119dd1744f66aa8f8bea5c090665c6b7a04bf421e. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/QZWFS2301245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8803d37bfb5cb0d5097b4821f1e43ae29bbd794e928318713cd980fe46e38b1f. 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/QZHN42403959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c77cedb6a0ecaab2d5743b442ea07272a9e3bf224c1c3ccc47e6b0ce1158dfd. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZK6N2454750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc24772339c2485f41087aa9bba67dbf476e3fef36983c68791bd221bda0471ef. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/ZA40S2402021.
DEAR BESTFRIEND (Waibala) [feat. Umusepela Crown & Frank Ro]
DEAR BESTFRIEND (Waibala) [feat. Frank Ro & Umusepela Crown]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89b71dcf30f8bf302e9cfb8382f4da0402ce9d79d7934efbd474a0c7dc55bc6e. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/US38Y2426875.
Never Forget (Southern Province United) [feat. FlavaBoy]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6345e7cb9014c0039e660f81ce8b0b1335061b1dd4b7cd3b9b67ac5f774cf46f. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/US38Y2432115.
Nimbuuka (Central Province United) [feat. FlavaBoy]
Broke Man (North Western United) [feat. FlavaBoy]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3a0207c9d799ffea606b52908dad55143fdb8ad99ac4e96a3855935d8fd1434. 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/ZA40S2500031.
I WISH (Lusaka Province United - Cypher)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6157c7298ec42bc9f75e4508921c33940b80de3f1112f1781f60035bf1148140. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/ZA40S2500065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc204447ecd119b525219b0671868b892b80179b3122bb9f2faa0b67f5b969a1f. 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/US38Y2506114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24bf9eed2795fcd402d6de210f8fc84dfc09f65b5cd2206e9381ba17cf74039d. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/ZA40S2500252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eb980f6858b041a68ff4eb9cf046dd7fd287484e4e16be9933171553bae05f9. 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/ZA40S2500682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73e19f2c809560984526b76ec6573796424d104a69731d19710521e800058aa3. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/ZA40S2500677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb39b92a19e37250576f808db0d0fec09da50d24d2c2bbf9209d7058f196f8075. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/TCAFT2116544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ef697f4f743a3b50d993951e04f2d95a51c65207d081faf9b31c3fe540ed88d. 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/TCAEL1903797.