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 0x284c3dde83a9c401198eb3766c8a498cc3a1796624c2129151ca3229c8fc124a. 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/6125dcfc-724c-4e21-b671-5a66f1b938cd.json and https://artists.proofprofile.net/proofs/artist/6125dcfc-724c-4e21-b671-5a66f1b938cd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Weh Weh (feat. Scotts Maphuma, Kamo Mphela, TOSS & Kamo_ww)
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 0x15d8cd377b837c984bb1ec272dfcf99583dc88f65e2833d5c02116ba5173e495. 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/ZA56E2417030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2da26d4e98256f5d56db270576a9bcc5047a8cba036ca99fc09ced9ff65b1e97. 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/DEQ322400419.
Sexual Love (feat. James Fauntleroy) - Herc Cut The Lights Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad6ea5cb9bce044887735172b5f0e12591d703a202c8d62d7e05969c27407a39. 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/QMJMT2305087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae6aab45bc5a2b9128351355fd84d94fe6d3b6c2d4d58479843d4856ab13d136. 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/QZWFR2362410.
Schwarzenegger (feat. Sims Noreng & Herc Cut the Lights)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9874e4fc0b9a88093355ce5bf2efa7e0fd688aaa01b36e7559c266bcd2f5000b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ZA56E2416122.
Unodoli (feat. Herc Cut The Lights & DJ Maphorisa)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9920cd26b38fce512f059c69457179c0b0086af51e1876b2ded1aa4f7847eaa. 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/ZB1OS2300210.
Abangani Bakho (feat. Shasha, Tyler ICU, Xolani Guitar & Herc Cut The Lights)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc175ec06748ee2e3e00747211f94174ce7a3592be53c30d263304d48d71faca. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ZB1OS2300211.
HARDA (feat. Tshego, Venom, Shishiliza, Herc Cut The Lights & Jay Sax)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x003072eb0ee708847b30670beff983bff1bce93dc8b8710c5ee340224a857888. 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/ZA56E2201333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79b86e2c9ea4fa329929f7285323babd1197004b41c8e85ff674aeba80a17b80. 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/ZA56E2201337.
uThando (feat. Blxckie, Jay Sax, 031 Choppa, S.O.N., Sizwe Alakine & Herc Cut The Lights)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf737cbc1d8bf839d69bbcdabbf6ac72395d5610c5a1637341d1430c5008495d. 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/ZAA012200290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2da26d4e98256f5d56db270576a9bcc5047a8cba036ca99fc09ced9ff65b1e97. 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/DEQ322400419.
Khethile (feat. Laud, Just Bheki & Herc Cut The Lights)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa66311323bf440278c0efd84f8d39c412628d2c50ff82d2536c886aee34196a9. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ZAA012200153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f80dcd9ff303747a79f24f5d3fb6a03a7c2cf0f600d12bc8f73f38073b72352. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QMDA62292731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47fc7a832ab2526afc63e7eda6a19b504b7e5764b6273e25b7b31dddead33566. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/ZAC012300354.
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