1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 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 0x791097d6de6e4d5a546a96c2c9f94a8deaaaebaefd598517f5dad599dc98f3a4. 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/51f2a5e3-2992-4132-a1fc-471f9d974d7c.json and https://artists.proofprofile.net/proofs/artist/51f2a5e3-2992-4132-a1fc-471f9d974d7c.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 → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 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 0x8869b7d3a5c488acda9f5e177800c3ab743711407cef7b44a3e5ff9ebda4e217. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USCGH0601864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf0d42951181adae31dc72be84bf82f6b6b8dca544de7378d33707716cf8ea93. Chain 2 (Bitcoin): anchored in block 958625 (2026-07-18T23:11:57Z), 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/USCGH0601865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x954b84f810f4d142824104d7d0e65a15ae88204c3a2c3695fe306c045b6eecf3. 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/USCGH0601866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67b8d80cbe8a9ead9acb2e42ac8c39b96a3c12288f5931411b941d6e199443ef. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/USCGH0601868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf01f8a5aa6c22a62d04a102259a9382eecbae4ec9f630194aeb27ec07445870. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/USCGH0603045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49a940725a3c2e29d313ebdcbaed0be1a9c5421fd6da8bf5b8fd9f2d9cee2a5e. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/USCGH0603047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd02bc1cccffb5c61e4cf0e1e9244936f39c810c65e934b31d6ee6ae2a31f6f53. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/USCGH0603048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52860116c77642f1843439574d308dd35210af6c4aa83e0e9ad8a100679b0161. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/USCGH0603049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51f6772c27bcfd040860b6ff404ce869b90213b25a7679f3b3c1d8c5fe207550. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/CA5HQ1000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56cd644f40056dd4705be3d670c18807e98be3e06545eee6fb0258d75fc1ef2c. 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/CA5HQ1000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6e9d693bd438b3ce5679b4133256fd242579428d2f32caea53c4dbafc9c999f. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T23:02:55Z), 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/CA5HQ1000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dbfc4a2847e7da262a11236bc83fb50f0318ab10f804d36698c7a87e1b034be. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/CA5HQ1000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b4b8114ffdd7da1fb690877b4448fcdd8c6a980a909e4fa98b32918dccc59c2. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/CA5HQ1000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcb737324bef5a17ee8a044c7ab2b9b70ceeb7524684a4c8e64a22a28569dc8e. 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/CA5HQ1000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebeaddc32ff85163b624a6685ff68242eb7ca05d83fca3bec6d49eafc7c0fa2a. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T18:23:42Z), 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/QZDA72089424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03c063c83318f9e1572bf887780ce2761baebcf72d0cd7b1f8a06651a0db8020. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZDA72089425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f3ca57c2853efccce86b403ed6b89482e5729095d3e46540a72c6e71fcb4f9e. 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/QZDA72089426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc4baf31df34640ae885f061d5b5b3e66824305dd1e8a778476b7699064acfbd. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T00:02:54Z), 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/QZDA72089427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6e823fc37401da9b0713686c88f05c445bf262a8e1c71f1b38905ee3766f242. 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/QZDA72089428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x706c70117358f1ad4b1e6d6beb90f7b90dbfa77c244e3df2e8b5d9c774d88352. 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/QZDA72089429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0772599637a89ccac669ad154aeb3d61da8f4c803d2fb872a2599c4fb34c1b46. 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/QZDA72089430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc50e7f83e758fe06b9871a8f5daabec34b6c0e6f534d085b308dc307524c0ed9. 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/QZDA72089432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05950b2f35cf67205e5e6cf60af2cfa3d06e3c629aaaf08b95b10ddbbae7a9ad. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZDA72089433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x188ba5dd9408eebd56fa912fd0581b99eecb325a44d0c072cb38ddb92f4e96a8. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZDA72089434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0513d0f167568eb920e3fdfb66a8f40abf3bc96db9c414db35cf3b9f381b519b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZDA72089435.