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 0x15ff3d5110da660e2757d4814d986be90adc8d7b6a78b99c8e4375cf9dfbb04d. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/219d5cba-4ac4-44f3-984e-1bc18271ab6d.json and https://artists.proofprofile.net/proofs/artist/219d5cba-4ac4-44f3-984e-1bc18271ab6d.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 0xcc039cb924c785cecf2f4fb85bed84792fb26a3884e2b297eae0ee84d35a545c. 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/QZFZ41988453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ed5fb3746171c1a6e45e5ded1d089f3a66a3a50bcea58d6961e5b1d4bd15056. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZFZ41988455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3075880472aba6c5a87272a08774fb8a2ac343832620a04df8dec0e24552bb15. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZFZ41988460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6c1213d0ba53b5b9ff8a9220c65b56816074bd66fa56348751bb977257749fb. 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/QZTBE2451578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd99545d0eb4c44691e3088efa53bfbbee6a525d11e1ef0c3803b553e581ea25d. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZWFJ2443041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fd786e6412a81cf2b61a7f21827a241ffee753694f79c0c80c4111953ec6706. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZFZ22510677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69641bb62ef806a4ae635ccd789683d30c5eaa313b4c83b1f49d3a1cb423cd1d. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-17T00:14:50Z), 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/QZHN72535129.