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 0x60485c92d3db14844b04e803521f0bb8d1e5a1d3500d07703dc5139ddff7bbf2. 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/3c168047-fe63-4291-8e44-236676a1497f.json and https://artists.proofprofile.net/proofs/artist/3c168047-fe63-4291-8e44-236676a1497f.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 0x57658ad2db18e3e948c448c76ca3537032af96354e6f047c6c8741690980364e. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/USRZR1600043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb28b7430fc600565e2f374798d1b4e130bc8f6ab9d6c858ea9e5c789962eb2a. 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/USRZR1600046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa131b8fa69bc38eb1337f74981d62e0df9fea9e5c67e2181790967e27d240369. 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/USRZR1600047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d83ef51cb17ff369e8695f7d8764ddfe6555d53618a1e67681a8f709469953e. 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/USRZR1600049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf75af5fc0f95a94dad75f899bfa6ccfcd1f2e4b561d7639ab8ac9eba80d5e9b0. 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/USRZR1600050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fe77ad0016afb782dd8ad2f4b1341b85a1c9cda43778988db684974f03f36d3. 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/USRZR1600054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4a7029b5fa9e790b100d0c5ca8fa4ba5c3de1a7c355ccece3eb5f70d2ef5957. 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/US2421229201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x259f474a1455adb39e5f34fecf205a732fd6b878320d961f4613da6a73c0d2df. 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/US2421229202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97d271a714b3177bd907c3602e5be78fee79a87d9c15b64f04d144cc2dae94fc. 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/US2421229205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d805b18a5611455e82026cd1ef2a11e787307053fd39e4fdd0f0f418e02d214. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/US2421229206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1797b0bbd3315cb4263d9291a3ce3abffa2edf4a1ace3b2c22c593b1906c512. 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/US2421229207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec113dd32099ce956567c34c1fdea95e439ccaf72373faa6b338e8ac33a7d3ac. 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/US2421229208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8484443e643fb4ddd163c30e37733087d127e38721de22ed032a3408c84e4b23. 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/US2421229210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa516cd85a1479854c57b5dec7b361e07e1a9fc410af2295b120966771ded6708. 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/US2421229211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1faaa0d85be44c1ceec8113595831662b138b94cb18970144fbe66d65b81e60c. 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/GBBTF1000086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe0efd72d52bc5d98e0674321fd7d30c59b81a2e6884e7577a239f1a383a4aed. Chain 2 (Bitcoin): anchored in block 957198 (2026-07-08T15:54:54Z), 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/GBBTF1000091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba5d84b2b3d1c90247d0c93c4600321eb9856b4a7586e2fe15205cf0d46adede. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCACX1735421.
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