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 0x1e05a08c5dad6f310f5369f7c985c49bd5e4579ca890ec5f335c47551e5b9dc3. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e88ec89f-752f-432a-a9cf-c6e6e7d739a4.json and https://artists.proofprofile.net/proofs/artist/e88ec89f-752f-432a-a9cf-c6e6e7d739a4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Hamba Nam (feat. Mellow & Sleazy, Xduppy, Mr Pilato & Egoslimflow)
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 0xeae624057596102b4598552d309c31e06701b4a0c39ea6447d346ada61cd6b6d. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ZB1OS2300223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9b72460b77f0842d9c7c9ac92afc28ca95766848615a5d76c7312e055ed896a. 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/ZB1OS2400257.
Tsoekere (feat. Mr Pilato, Ego Slimflow, CowBoii & EL Mai Muziq)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18952635176f6e164f85035db6c20bb26b0595179c86baab5f0751b9fcfed5b2. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ZB1OS2400367.
Chomiyaka Jo (feat. Tsitso, Mr Pilato, Ego Slimflow, CowBoii & EL Mai Muziq)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71dec109b8c32772c8994886c79897ce766428f852b1366a89ad4e9134008d0d. 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/ZB1OS2400370.
Bophelo Bo Botse (feat. Mr Pilato, Kabelo Sings & Ego Slimflow)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ab9f9ee89fbdab05446d4b350f9881f42392b9af504934a22d17178acc8adcd. 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/ZB1OS2400372.