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 0x751cd6880f64ce2381e31684a8d7eef02fbe1318091407fd1913e793a6aa0bd7. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5b25c141-271a-4e7f-b754-779823ef2cb9.json and https://artists.proofprofile.net/proofs/artist/5b25c141-271a-4e7f-b754-779823ef2cb9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Mbizen Uyabaleka (feat. DJ Ligwa & BlaqVision)
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 0x0b7585c67d55ad4b15b8998f12ed5d3c81c0d3c6ed4e7e4e7be9ba545e0dc09a. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/ZAE5I1900015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81ce0c7ebc91ecca4cb2854c1f972ebd2c91ce648a4d78e9302acfa8be4d61d7. 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/ZB3G22300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca74f8c28e8c78ff198fbfe4957a276e1b9b7d5037d65bf37404e3c446c1f1c7. 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/ZB3G22300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80232db7615e9b1a68f075c1dcc1053469121075e9daa7520217ef3d60112fae. 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/ZB3G22300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3f96933d2e240aa84333451a8a1eb91e8075883888a69885fefeb622a90d094. 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/ZB3G22300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03282965fb11bc92d0cefef9cd4b28ac674bc8738f26a70d74a7f59058d22941. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ZB3G22300005.
Tsela (feat. Dalom Kids, Zintle Kwaaiman, Seemah & Cici)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x026e0f51098cb22e032338d3e085d19e5315634046f4c93dd12bcaf50575a972. 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/USUYG1567724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf2a8ada2b374a9edd6cc7b2b7bed83372cbae3db2f0f5fbc9f0ef2e1408bde8. 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/ZB7A42400063.