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 0x0ca40b047ea55f900807282a104f5ce019385afc2c9481e6e29bd7d74f0205a3. Chain 2 (Bitcoin): anchored in block 954705 (2026-06-21T13:42:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/edb7c7b6-dee3-44db-a8cb-4a255312ea54.json and https://artists.proofprofile.net/proofs/artist/edb7c7b6-dee3-44db-a8cb-4a255312ea54.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 0x821071e0644a8914e5ba8086a69eb94d36f6af515f78d60e78e713f02cbc5a62. 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/QZTB42274127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27401b3b2d032d71a098a98bfb248c001abcc825409c375de02d451692ca2427. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZNWV2167203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94fb13553550a078c77fc455f4d2c5e8fb8d67b5dce6757f6aa48bcbfda75024. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZFZ22187764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf475d1f4e1305b26a05190eff690843bf421d7f94b9eb462fd1314b250514cc1. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZFZ22187765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff35bc1166018f447900977aa53f298450c63c8b600189e70e27ba84f17ec567. 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/QZFZ22187766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c29616724f34ffb1773956a343650830cf09d2003c3a03d59a115602e0d574b. 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/QZFZ22187767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45ecd5a807a11031f46e72a45559d79108985f3aa5f26a9e547d2ec7188e2ed4. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZFZ22187768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa12f80122b4b4921d8876006d9650a85d54813a60845edf56ea725045315e554. 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/QZFZ22187769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb004bda300558359c84f8245db87c63fd264d15a56bae285683f125f2ba9622d. 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/QZFZ22187770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c522bbcf92b5c0b368c64cf748a9bc34c2e4b63a348e5eb51fe8416eab4f0b5. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZFZ22187772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x414daf43a91da77a658b246ff0cd5f36a6dd8a0a9e60c7185d4ce3d6d6f85ada. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZFZ22187773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x489e4046c07dac397240d0959e557ec33b4cb81cdd92c2b0b245ec8337695cae. 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/QZFZ22187774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91c7f905cd852669212a2a39133df1c1162669cd207fa2621f8f2ce7af3fed01. 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/QZFZ22187775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6d113efd914f854687b4721638e0588bed3962c1a64ad61532782843414c788. 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/QZFZ22187776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb286bceed50003d975e4859a7af0f1483ef08cbb540dded762c9e5dd6ed6c58f. 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/QZFZ22187779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0559bea2e3de504939f61c16783473253c3933d1fb024fa27fe023ca0d71e540. 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/QZK6J2354561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87a42f52f710187fd722a7e69640a1ca7f7cb47a0fb88371f4671a025c8e2f3a. 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/QZMEP2120860.