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 0xf1fb872a03c1048284100ae58fc9af98ef04b2b6d22217dbe0d0ec3bb73e418c. 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/0d60b6a8-78b1-43ae-92b1-2761997d1a87.json and https://artists.proofprofile.net/proofs/artist/0d60b6a8-78b1-43ae-92b1-2761997d1a87.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 0x11b47439ce35a37122eab2ad618a9c8cc529f1059bfbfea77e64ee93fbf1fe76. 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/FR9Z62400634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24d5eb0b1c39700b3505b9d813ce39e96b44dfc59be417fbd35bb6469033ade5. 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/CH7812360838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x635188ac64961fe9be2e5b810d7d357c0d6d00635a47cb5aa055c003c00ce9c4. 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/US3DF2499846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x960fde0635b5c955c15420ac4e887552fba5d4d787c8a29191acb967b08f63dd. 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/USANG2452861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e58ddfee9e9b226fdb79b6c5aa7fb6b3289add12b1ca1d1dbcddb1264727650. 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/USANG2452858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76a203187f715e2c244b150305530d835f1b6ca9047d74b27e7f51b885a61128. 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/USANG2452855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x835bf464fc5dc0e5ba351b95e01ba7b6710a4e9f58cefff08e91462db4f23e5a. 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/DGA0L2465405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e48052345ef6b6fe6f82117a01d29aaa6cbe3b7deb810976cd3edd6f09538ee. 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/USANG2416935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13ec4839d034bf927218460c8dd580ca13480a9e4b0961490651ed8a60e247fb. 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/USANG2425107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5ebec58c4f3c5e39411ed8ba286da4a89bae803b181892614f6c77a31232282. 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/UKZGC2405944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe87450d632cb685e40beaf4739010d23b5f1c57b57ea87820d11eb5f83ff6acf. 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/USANG2402622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x690020e0f77bc61ad3a6a386fde9695c805350031d8b21e94426e7c164fb4718. 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/US3DF2496862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x773db5f1164ec6d1d9426b0ee6d7b702f9a63d61bf71022ab9ef6763a55a05fa. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/US3DF2485287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeb31a4bb0d6770e9868091884e2d81c340758430e73a8cffbc88b973141d675. 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/US3DF2458655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bd2b1ba0db669190cb00f2df3c576bb076480e1cc42ed7ab50721ea0d1d6b4f. 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/US3DF2427387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf5f3945a3501dcf4e16140076eef7239e60bacc54e936303fc956cbbad575ca. 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/US3DF2421258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7edda80318904a11bf9fbf313dbe2510aef73ea0eaaf22c9d7241fe689beae85. 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/FR96X2417909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2762ce8f9ed027a5f3c8c204b90371328acefa5044a2b162edaa6f22a1c8e8b3. 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/US3DF2407813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2230aedc5c8051cd719b2a3dccc6aa317555042f53d962e18568c3177671e7b4. 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/US3DF2410498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eedd8f24e841b2985442d39a8772c946f1315e1bd41eac02c6c7cffd5055195. 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/QM3DF2493855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c390056f6067a3a9e796d5a65f6b4ea60c29fc06814b3e5991c58593e8a103e. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/CH7812365532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacb0b174f31bec23f1af957a188bd5228d7e8035e0b0ab50b21b92746a1fb40e. 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/FR9Z62300806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f110e80313cc84d23b9ad67818d39b105e172585b0543814058878559545304. 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/QMANG2250031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4a81b90e4e56cbc77a2752ac2130cd7e4527d5936acbdae8b92a4a1f9986144. 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/QMANG2250032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa795958758b840addd796085567f2a605c87163788a36b5ae47d0c9ff7f2acc6. 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/QMANG2250033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e0576de9b6e883cacfe18847ff028b24a1202281ccd83f399f74fa88eb60e03. 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/QM3DF2294292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32c5b23bb928399834e4ee1b977aaa697b07409544cef254cd768bcca76afa02. 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/DEQ022374400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcad895a8d816c8ace39874c248afe1ff7d327b4455ec0f7d6581769bf505f21. 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/QM3DF2291655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x701de02074acd434bda1aaa04f183d59b57ed085dc80f81980a7ff934e5f84e4. 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/QM3DF2296036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc78e5c8fb0edba2662b9a7b090e24b1eedba8b3dc4d145b923b529e81e7eba30. 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/UKZGC2306136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc32f99baeaba0c3621259ea19d524ad0bf1975d20065e3f35f4ac2132dcbb81. 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/DEQ022382767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe72b05e4df5b835b0f028992757a25ede917539f2a067e44f4aa1ff4124f5802. 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/DEZC62364365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d37e5fddf5b42e6ec22b80b82f52cc2c052e49f71e6afe33cad93e73fdf9d7b. 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/DEQ022382769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd79fc3842991bab66bf70bba17738faf2993ce9411ab3249c989147639c6331f. 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/QM3DF2249017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a20dbb80330119446136ef957e735702469465d205394b5a0422a554523b6e2. 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/QM3DF2244389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9ff8e2ffacba4c9bf8bad77ec46c5fc82e51e78463031f043f1b8bf8d5c87ec. 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/CH7812348386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefb658b2c28fd2d8492048edb746ae5e1c48f6dbc4e3913634836139975e25e7. 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/DEQ022382147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dc211e3e3a907b59539fc9bf9c68a64955cb5abaa1a45b74253fa4c8152e596. 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/CH7812347594.