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 0xee1199af7915202b2ae3d3f1b411532a806370397f1cf09aa13fd1d3dc4d6687. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/652911e6-29c9-4277-bdd2-90d484480fc0.json and https://artists.proofprofile.net/proofs/artist/652911e6-29c9-4277-bdd2-90d484480fc0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Whiterock Belfast - A Taste of Tradition
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 0x4b33b98b2ad7595babcfc013efa8c353dcd3ad10e470d2ada80427e9947007a7. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/UKXN22014748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88f2df00d9a778c92a33424a97772f27ed9654a35f1d5c5b122b2fcbb0393c8d. 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/UKXN22000530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90bc590dc17112e3227528eb4c4f004cffd730e9c9a37877c45178e47c7c4ef9. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:29:56Z), 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/UKXN22000532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88055bd89eb9f25129e31561c7e0b2fad6c80ae262572ab3da18a6da72167120. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/UKXN22000550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x895f1d428df6cbab11d71859ec3484287dd74937071bac658dd4ac65e177486f. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/GBLFP2276834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe77e050130e45cc5a59afae457c7b980ed25703d40300c2e1b8872fecad45ff8. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:34:51Z), 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/GBLFP2276849.