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 0x60bd543fb268cdcdf73b1f4b9ac1584bbfb838b9c4fd6f584b2eb3f8c4962229. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b7201f44-9d32-4841-a319-000d82eeb636.json and https://artists.proofprofile.net/proofs/artist/b7201f44-9d32-4841-a319-000d82eeb636.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 0x4ab16214b963101968cbe6028afd37a547334ecaeedfb5c3d5d9c9db5b5265fa. 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/QZES72054154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f587f4419ee9b5df4c486b6bc79ef834ccda925bb71290d9ef871c49f6c1b01. 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/QZHN61994811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb194e597abd9c9dc848a3869edd8ec4510ab180d329311fa86d386b48fe1d148. 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/QZHN42051198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71fb1eee647459ca1994b8ef6ce6bd437e53dfbbf11c4f6645f5a239a68392b6. 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/QZK6F2075339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fe447a43f0bba8c08fc46e1269348fc5de51396df51d7c281c0c8ef727255b8. 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/QZK6F2075340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65fa01ce54131f2037740e7554a744dc0553b29cea9edbdd9f4e17c66c6a4358. 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/QZK6F2075341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02c78ffc8dfbdfc0713f762e19f8f7bca1172c8f871d349ddad7d0ea849fe02a. 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/QZK6F2075342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6412197ad4c0c86debac301b2532632ff9570a05c0cc9570510cff2ba2f4b74. 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/QZRP52349800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe56f2cf1804cb4b011afca7ccca054e1a9c7cd27bebdf2f8843baeea85884cb0. 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/QZK6J2311287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5b55505b96b357f0a35d758b60163b70265d0295630cf4256e48e306d1023a6. 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/QZNWQ2364119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe56f2cf1804cb4b011afca7ccca054e1a9c7cd27bebdf2f8843baeea85884cb0. 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/QZK6J2311287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x172f846f370b4691521a064924c73368c2bae0165c92f616acedfccd08e7b432. 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/QZMEN2265649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8263ecac2cc3fa375352e8646066e401824addcdfdaab9e6034e2da1fa6f6a97. 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/QZES92270332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa02f246cecf12532c40a101285507a97994221a4605e7915a1bf63c960477379. 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/QZPLR2144885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x536518e194a9f466155894c43a6705e2b827a71819c2aed27034ad1438d926ac. 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/QZNWR2152201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62f24b326cf3133944ced47c37866d98db15f1d2780c29397e790fe02e8acb6a. 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/QZK6J2136028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca39b929a7fcd5b137206c3963ec116fb75c49af7bd58655522212634c4502bf. 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/QZHN52135860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62f24b326cf3133944ced47c37866d98db15f1d2780c29397e790fe02e8acb6a. 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/QZK6J2136028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca39b929a7fcd5b137206c3963ec116fb75c49af7bd58655522212634c4502bf. 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/QZHN52135860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f587f4419ee9b5df4c486b6bc79ef834ccda925bb71290d9ef871c49f6c1b01. 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/QZHN61994811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d2abb32646c2c1ed6d4d8694118069cce83aad3914b43030e2cfde5dcc7ea30. 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/QZFYW1961944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22295fe5b68ddb9d439e5e01097126b27bc695a6bfbedf6e3a69e69e5cf93023. 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/QZDA51945961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c83624a68d091eab668a53bd60db21a5ceb98bb7d2e6b64249275e047ac51af. 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/QZ85M1932997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cc6f289c1bdd22d2ffb35272bcac0bea05d6300fa9cb468d1d4ebe5e298d1b4. 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/QZ85M1932998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dc4162ec84bf09886be31b1ee81840f5a127f6f55bae2aa3e7ca6953c389790. 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/QZ85M1932999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59c2a29cc4f90e362fe2a33893d3da2bbce4796585cb0f93195db4b5ba0a7637. 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/QZ85M1933000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4767c2f24d284e52ec3452b01fcbe200b937127f074340979c8c4e8feaf8f6e4. 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/QZ85M1933003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16fbf3a5e4a827c584f76b7369664d85add3ab62b00115ea2e21e74068fa3c1d. 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/QZ85M1933004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78385a03d4dcc37cf5bcfaf00817f98f722ad5165120fc6c85784c9eda614726. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZMEN2250265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a530979ccf7f8a217a312b5fb32c7fa8a84ed87627d6ab960d9c35edde25e39. 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/QZMEN2250266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0437c460374c403944dc0c7165f1db68aeeb1af067be541e0f99fa3328074f0. 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/QZMEN2250267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d39d5ad822a1eff277306d51f941e1276c1031ca5c6dd1ad2ad084403dc0713. 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/QZMEN2250270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52df7c0218d5492499f32f91966724d33878a5f599a6a82cda3b774a4fe2782a. 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/USDY42267080.