1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xf8724a09ea0a6fa66a7d3fe47e540f1b8eb31e386a2e6b4b58e8c481803b26b8. Chain 2 (Bitcoin): anchored in block 953985 (2026-06-16T18:03:53Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2e227cdb-9133-401e-b211-172f3c80a289.json and https://artists.proofprofile.net/proofs/artist/2e227cdb-9133-401e-b211-172f3c80a289.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 → block OTSBitcoinBlock must exist at that height 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 0x08bb6815ed9d3bf0d7a75fe88a5c7fed6a722aec2a9a4a373dc76bb2b81529e9. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DKHH11600103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f54167e5a57da128cf768f673f35ea343a9035c8ac5b36419cb0af8c50e9884. 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/DKHH11600104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f80a94f1515bd10502811b7945954654a7a2426e676f7b92ef7650d4d4095e2. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DKHH11600105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda5de65ebbeaffcf08f6e90f61c2d54d43c28230bbc2398a51caec42b7f7a9fc. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DKHH11600106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4efef71d6b78c9921d8e3853fd5a13c184b325b93d2a06e76fd4e718abb0256. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DKHH11600107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bcd2239e66113543a3a00c0bf62fbc5aa8a0ee99c60319efd83e61a9a5ed87e. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DKHH11000108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06dbb2754d1966878ebdbe29974b016f04272feebc9b86d95f51310431092e24. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DKRUA0200701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c4b60fec58462feb0573b15f9a80df6aec871a7eafeb8913e08b658eba0fde5. 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/DKRUA0200712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cd039117acc0bf6b8cd91099a9682eb5073652c16bd4f732f37f7bfa1c4dd22. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DKRUA0100307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34195c56af951ceaedfe87225aa84dd0921e8cee691d9b1c271ad2ada1fe51ea. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DKRUA9900504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x858d2240a099801ffad55707649bb447763f945c5a43193a5592e05cab87455d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DKRUA9900511.