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 0x9eace03e33e7983fc740f63ca74855a93c92baa1a4e034c7d7fb5a1e54972c51. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6a9e271c-2c94-4f51-9383-3f2022ff4f76.json and https://artists.proofprofile.net/proofs/artist/6a9e271c-2c94-4f51-9383-3f2022ff4f76.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 0x92378796abe3733aa603778073591fd34bfe7c6bbba959dc5ad525ae55f2c593. 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/QZS672246147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x309d72e7656c7742e301606705ce536654ce46af53031ea09ba66e1b4c933c27. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZGLS2341172.
Isla de la Soledad en Krai de Krasnoyarsk
El Día en Que Richard D. James Fue a Mi Casa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaece80211518b188c2bd324a92174259895ebd51605b74c2d0a4f5be2ba14942. 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/QZMHN2266896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x213f97844a8fcd3fee5fd717f370507a65fc40f5f19e32d9f6fb8ce4c48a3e36. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZS672233465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ddb046bbf40ef292f96af0d44d9cd20ea4afcaa022ad74383bd317460962138. 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/QZMHK2211218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99585717a32d2d834ba110aea6987345c29e4b71e2980923bc6b7337d326ded1. 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/QZW9K2438419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2393041c5fc1cd475efce25c695ed937cc1571f05ee161e8211c594dcb4cd53d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZMHL2527130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4077d549429f54f05b722be89ec724b6fc785720006e5131377ba4849a7eb3c0. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZS632505586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49172dc2d9503ab340fc7d0ef15651013dd77333f18df7d22016accc38773b12. 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/QZMHK2568507.