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 0x091e5673f510a23b43db85901230e00831f97e7caaf5882d0246e757b6305af4. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e7d12193-4746-4ae2-ab2f-3685658e5201.json and https://artists.proofprofile.net/proofs/artist/e7d12193-4746-4ae2-ab2f-3685658e5201.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 0xb31d25e4f6bc68b0697dfdfe0633aac817a8f24ce4b7fb51a105b20f87c63f84. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/USJ3V1321961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6f28a103cf898e4d78cf54b0392f53e00207244b3970124a3834e69d27f65c5. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/USJ3V1321965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d63de04ef1b0124c67179c8cc179e4ddd1b1034ca493150ad9166a92d638683. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/USJ3V1321942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbf1be3eb09cc03423491f7df67af30a82bf31c66d53655071740192bba8f675. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:10:52Z), 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/USJ3V1322291.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6402cdeadbb3dcc789d17dc29f6b2456101f63bb7a5dda697b18af94bbc69004. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USJ3V1329942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7318b8d70007fdea92abe07832aca48446f2fcfc79394e89789ed95614d803fd. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USJ3V1329944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3610f8131bff181bdc207830f188bcd46188900073798a9f0bf96cf9bcc82fdb. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:38:19Z), 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/USJ3V1847789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf73220b5e2da5884c36deb51dd681855dd71e32ee8acbb5acdb55747d0e4a355. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/USJ3V1847793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a757db4e5060bb9e9d658eea15a967f7415309ee0c9a34b22e36c8bd285922a. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/USJ3V1847797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x255df964238abfdf4d6bce9914f5b10b49ab62a148e864c4b19693919110532e. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZDQH2506458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d955f36c11c47831bded970816cdc0bfe8b180e437add9a575458718c0ed0e4. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZDQH2506461.