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 0x2b6f42ae0b986a549e87b6a624074c09b6137b176191bd460664252e2593c682. Chain 2 (Bitcoin): anchored in block 954556 (2026-06-20T12:14:15Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ad0df124-9018-4c6a-93bf-f7b7478e7c1a.json and https://artists.proofprofile.net/proofs/artist/ad0df124-9018-4c6a-93bf-f7b7478e7c1a.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 0x474e7cab04e3b9950d054134d56376c31f0a6287a9722ee8b20133567195c37a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZHN41936597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d4631ab7dc1af70ee4ecf53fd00be38c0c70531f84b7bf53f84f0618d0616e3. 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/QZHN41936598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dafeb39a7d0ee7ad6c1243c49175849dc431b1d1116803556c117ddefd23db2. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZHN41929271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbba8fdc56b97b08395d530366088573ea388d1875b614a3f343276dfce5f3664. 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/QZHN41929272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf26f3039e50a287ff48dea8cf8caf45bf20f2dee9d4f0733ab7d086b66cf15b. 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/QZHN41929274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dea26764785a454fd865291c401137e8b17373ae4baa6ef328de43ea526a9d1. 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/QZHN41929278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x275dd9911bb2446effbde14dcecb94f9a06a2341c9bd37860edcf2a5fdaec7a7. 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/QZHN41937652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a2e7cc99b5bb775b0518a53b54792af89cc59443620be3125e93c89320315e6. 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/QZHN41937653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c6c52f68421cf1b30e72de93158989b84ce982c30f25977f91994b5e2623eca. Chain 2 (Bitcoin): anchored in block 957304 (2026-07-09T12:19:34Z), 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/QZHN41937654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2f31a3a2128fe6f905e176909abd16a8e7ccb71e735da4c99be117a523289d4. 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/QZHN41937662.