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 0xffff8fc04a359cd607b23f6a7cb292919389430cc4b9e9e11000d281862691fa. Chain 2 (Bitcoin): anchored in block 954638 (2026-06-21T03:45:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d31ddd64-1a74-4342-be9a-1400fe2ddcbe.json and https://artists.proofprofile.net/proofs/artist/d31ddd64-1a74-4342-be9a-1400fe2ddcbe.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Ikpe Chukwu / Iga Ekwe Ka Obata / Chukwu Huru Uwa N'anya
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 0xd67ba4c4a2cd99c555dae47e05498a8ddb38335651da2d1f6c6dded2449cbbc2. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QM6N22218794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c5db968d7e5a10129064822df9a9227ffa4c0ea7d1baf8c3534ab673de33938. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/QM6N22218795.
Ikpe Ga Eso Kwa N'Ike / Agaghi M Aju Gi / Nwanne M Lee
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8bca1abd64c174d517b1423b264c3d392e33a8d6a0deb7ffb09ac88509a8cba. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QM6N22218796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7717d9ea4dbef51e13bc8f7eaaa50675ba1a71124a929e28ebf9f6c6e2ee5440. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QM6N22218797.