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 0x6a602d38bffbf0b82f5cb133bf33d4d4a4662c7d617e64c69811a7813654c284. 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/5d012dc3-31e9-4aca-b25b-574f5b282130.json and https://artists.proofprofile.net/proofs/artist/5d012dc3-31e9-4aca-b25b-574f5b282130.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 0xe4b0aa9b35e8299ebf92962a60c4cf554f96803b55b7b8857bdb1f858a14fd72. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZMWW2207001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a521fc81e5954e6fb398691373da259a5943cb5a61809f7719da1a742f5a422. 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/QZNMU2203041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe14b06938e554d381bc3dcaa53ff9ba864f715b3b5c764cc4232e6d87cc23e44. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZNMU2290404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10023eddc892294338cae732bbca9ec21e1050b45428acf779d9ec4f6633313b. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZNMY2499065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bcdabae34d8a525448e866e8880f303dea247eb95c8e675fc4e2fbf3c768014. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/QZNMY2412583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7af42d1fd6c39d712cacee2ff6a96ba31d9586a206fd0f0dec351cffce8af146. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T01:02:55Z), 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/QZJG52573246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a6ab4e834cd6c8dac124262cd87d7331082c74e304c08916c4098c1ed64b1a6. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZL382590712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd2b219563af25045f427bf7d88fa93d155e4e60a4da5be2bdefced2bc7fc391. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:12:28Z), 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/QZLL92522684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf6879411eb4d8d6c5e55a392e71810775bba43155abcb99388cf5e22810c837. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T21:39:50Z), 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/QZMEV2506843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1cadab6e3be1cf0bba98477507912361531b654a6de6e482703600e6cc092e3. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZNMT2540842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50ae60acb97b37d914d9668efb8d3cc4def74e62cbd7f545e0635484fccfb2ee. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/QZNMT2540845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fba152b0c0b997f5f966277ad885c2978aa2e5c9955b4d618a618adb8f5ab98. 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/QZNMT2540846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0402f8b25eb424d7db2d66adf7ee4ecb773321cbfe41ddb8c8180ef43a53404. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZNMV2529132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7168c011aedec648192a1ad2dd49465ec33ee53fe826cc5752923bf2553e2dcc. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/QZNMV2523466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5521b3a25082a1403db92c50389f46eb468510b531e9201beb1d46ae6696315. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZNMW2588150.