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 0xc163134fe39371f4496ffd846c9d284ea57ae9d6151a55cb9837bb8a68999a4d. 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/2ebe789c-16f6-4491-870f-6869197eb717.json and https://artists.proofprofile.net/proofs/artist/2ebe789c-16f6-4491-870f-6869197eb717.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Baleka (feat. Nokwazi, DJ Biza & Tsiki XII)
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 0xf92d1f655bcd1f855017da6deb4ba741e8e2f3bd4ad04de06c5a6855b21d034c. 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/ZAA012200261.
Type Yam (feat. Mpura, Skroef 28, Nkulee501 & Tsiki XII)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeef6f8440cd5bf0f2989370d8fbc0c84ab0ed59400446f298509cf00251c5ca3. 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/ZAA012200260.
Anginamali (feat. Tsiki XII, Fiesta Black & M.J)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c05c8a9fe91e2bb56f7275d20962635fac3459df716ffa2398990126c51f7da. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ZAA012200245.
Sabir (feat. Skroef 28, Nkulee501 & Tsiki XII)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd722592c4e59e085f78616673afc6904e241f73e15d768dec0106932bb889523. 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/ZAA012200250.
D.O.P 2.0 (feat. Tsiki XII, Marcus MC & Jazzidisciples)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cf5072c74f7977253611c10c77660edf412d7f38d4b4af1a19d04ddc05f7c22. 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/ZAA012200255.
Gomora (feat. Lady Du, Tsiki XII, M.J., Nokwazi & F3 Dipapa)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59ee5a3b93c303f3cad112dcc8915ab34764a735b86d21a53c647ec8669f12c6. 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/ZAA012200247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59ee5a3b93c303f3cad112dcc8915ab34764a735b86d21a53c647ec8669f12c6. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/ZAA012200247.
Intsimbi Edlezinye (feat. M.J, F3 Dipapa & Toss)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c37567e0a658ed6803503b69228acd494e5937388a6df6bb84cbb9ca27de5d3. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ZAA012100234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f9e09481ae34cbb4ec9c54136e09b72e85c0580efcbefa1c0bdb9b16bcdf2e5. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ZA56E2101768.
Ndiyakhala (feat. Marcus MC and Tsiki XII)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb000e31e1bce25f98f7f9040f3929cc488dfa2713ebe881be20e2123071b0bb6. 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/ZA56E2102098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f9e09481ae34cbb4ec9c54136e09b72e85c0580efcbefa1c0bdb9b16bcdf2e5. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ZA56E2101768.
Let's operate (feat. Siya Sindane, Leo Deep, Mlwazino & Mshengu no Tata)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48fd54786beeb31160ed16c66d536b43e96d586a7df560ee7ea217f133989ca7. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ZAA012200465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac9931c963ac47206bdb4476ff871373ba9aaed3b9ef0aba4ebc1c36d5dc2318. 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/ZAA012100211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b8fcd6ead3ed0f828115b338a1844c7885ec8b13dcd6de254c9ab0ae5118c6b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ZAA012100222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x517be944e6d3da562ef886e513d1cfe6ddf33ccc118148c34777d131b0bfb1c3. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ZAA012100223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x695f7c7ae2793bd0f8704223c75079ab5ce4fbb197e2da9026ce21cb4e66115c. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/ZA56E2102100.
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 0xfd243387f6a1580529211b12e5b3c6c8dad5328a52196e641d9c3932bbdc9172. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/ZAA012100217.