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 0x292079ad3e308646026744698901d4ba3c4dedb552322a6034bd25b1ca90fd5d. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/98760add-e9bb-4b1a-a26d-fc6c41a14fa8.json and https://artists.proofprofile.net/proofs/artist/98760add-e9bb-4b1a-a26d-fc6c41a14fa8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Ha Nka Dula Tempeleng (Recorded at Studio)
Ha Nka Dula Tempeleng - Recorded at Studio
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 0x65e77005bb438eaf60faacae14f343ef7f22da4970c29a91ccdcda0adbff57eb. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:32:02Z), 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/GX3HH2195298.
Ke Tla Kele Fela Fela - Recorded at Studio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28b5c8bd522ef6ffc64b29fe87caba9b3ec7149cc2cef9784cece22b70c17feb. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T20:03:29Z), 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/GX3HH2195332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x287dbbd0f1bb38c5f1b19c8136bd9969c2413fcbdf07305d49bff629955f8a08. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/GX3HH2195333.
Modimo O Tletseng Tshwaro - Recorded at Studio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bd00f877b0749e029c6bae0ef84f63e5b84c1a084e54a8aba1bcacf83a9186e. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T14:58:27Z), 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/GX3HH2195334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd29885500abc69a27720960b74f327a54fd6447b5171a76bbee98cd3327f860. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:08:25Z), 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/GX3HH2195335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48b3b7902c527c7bbe5840dded6c24fd7e171092ce826a9c061d6ea6ecf7b860. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/GX3HH2195336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2529483d836274e1ef400418dffc717a25e5d48ccbebbdda54b1ee789131d20. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/IEWNY2429825.