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 0xdc6fe6a9e5152e2f7b6377984bb884e11f7b910873c4e64d0a0a56ef734bb0ee. 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/7287e506-f686-4399-9b68-ba8521d0b8db.json and https://artists.proofprofile.net/proofs/artist/7287e506-f686-4399-9b68-ba8521d0b8db.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 0xbbe711d8476b31662daa0fbc5339d2184968aafa6dc9ee9edda80543ac2dccd5. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZES52287150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e716038fffdb1583f40fe577291a7758ef90c194e89f73f31aab2c8cc1455dd. 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/QZHN92249695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x598162302c70a0f37756ea8574cdf00adb799d74678b6ab271fa8e4c02d5478d. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/QZHN92249697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0088f911324e48b3b2cc04372101c225528a0b088fa2d7c9c29ac9c83e8a60b. 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/QZHN92249698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x466297569096a7b249241219b97625466a2e0aeba3402f4bc3e83b0edec0de25. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/QZRP52269879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x078c4909f851463428342371aa45dc00c15ec92f608d680944e4daa2e253a7ab. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/QZTAY2294859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b760a5c8dc83c45a77460139902d62a1916e757dd56c96ab09c36a54c653b07. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/QZTAZ2265023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x581da60f76dbe55c8a9b7cab20c407da633b5f7384ffd68750edf2d5f1376020. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:11:28Z), 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/QZTB22261483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f2b62f52ebc1117b2e3cd8c8f10e37a461632436c847624107b9b7ef9dc4d85. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZFYX2382676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb3944b4345e752c6c42564b9b3f947e4559b502f354d72c0a4b3949a47aeffe. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/QZK6N2380370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06ec8b0f2493d04b07e9ccbf4028e2bde90ee7975f8a4837d03d478954e0219f. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/QZMEN2390175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb162b98970ef4de6ac98a93fda5d828e731a35f29624f6a408424ffd1b5589b1. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T18:17:13Z), 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/QZNWU2312824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdda4867e68064b4e54e951e2219032cbef6b5880bd06b3ac8c26b18dd3013c8. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZNWU2323286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0c3146dd889583bd5f7122aae80bd0cd71cdf5ddc9e05fbae33c2aa00e381e2. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T08:12:22Z), 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/QZPLR2321952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x546f8556233d01c738e452d15ce7fa8df6762ce756393f7c65950854e6d793ae. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZNWU2323287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc4b769eb6b42c9461fd0e8048e836e63cc6a5ecfc2a135029daa8ef38c0f3cc. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZTAW2392369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50fe4c151c694292b152f0f6a60fc4e057b44193d0661c64b1e5cc4b00b1422b. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZTB32305644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0360342ae90c5d6184f024932423e76ba050b99766268361678add34c878b57. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/QZTB72308860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ff2090a1560fd93259c4ee376c11307fe4c9767a02c30dbec6fe3cb73018db2. 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/QZTBB2372057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7accfc1d06c19b95574a957c15eff3dcc8fec1a032d890bd5c64f57bf574c4e6. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T07:08:55Z), 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/QZTBB2378739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e97e749309b50279428cfbf70ec5220e26870534b0a46d2f06b4cbf63263d9f. 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/QZTBD2317844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8407bf8c4a681235e096d603d88ec727ef87f2ac35feb23d1abcebea5550be6. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZTBE2388636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x746836bafcc362527b6a99a7a295870a85cf93e709be5d46858a280cd5093141. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:41:08Z), 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/QZWFE2396142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa252727035dd2ac5ebc45952cec8b489aa1b978463db674e25e9b9ad0beb1985. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/QZWFG2343826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe975fdae08ba2235bd2eac3dab8117bdfd63eeb83d0a43ecc0f62cc5ccdf8c44. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZFYX2469534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f5efc84aa94b8c06af89234e60bb21e1b85ba735139a7b8cb37067e1b1e116d. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZFZ42487614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06cefc2243a236c13a011d2609682345a43fb74df60ab47d27a1ce1215356923. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/QZHN62473925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2706c456ee23283e28754f5c5a5f03f522b01ce845fcc6eff5ba3c82491e3a1a. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZTAY2469004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x836e9d210e337ba57c3b2a11491dc648d48f79b2e39fd5c4661fc97fd559409b. 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/QZTAS2431438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x695423b59a4acb926cd14d9e67a83d601d9981ad4e8c8ae845f0c788bbbabd32. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZTBD2471109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c659f189bb90441502e837898fcbef2e6810e6d3c5a9996449d05f6d6ab1d58. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/QZWFG2462353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7e9a65397bb5d3249b2370e6b82b221a86468436bc8943aea3e8d184cee1f72. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZWFP2402095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31e7e367fdf8da82065a30e2e6307b35546bf9415ab398f545f12205cee8914e. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/QZWFJ2415163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42a842f21a9f5e38afddc8fa529af8543aee1132db2c12917f96ac8f6820819b. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/QT3EY2424441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dfb87fe0e222ba04893cc7e9b7118639e64b50098368eff6cd7238147efa0d9. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QT3EY2424442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1063f1642e308914bc33b20a2425944e182150dff529d070d134c6b0951d83d. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QT3EY2424444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa687834fc93fc510f5740f8f13ac47ab67de0328cb908024bbded64527d4e1bf. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/QZK6F2513455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfabd1fd7e417aed51e8bd235c2a141ae0a1830d4cdcd4a47645d9d3bf522d6d3. 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/QZPLR2583780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab7cb2cf7c48781d9413e99cd542919748a755b19f024a350e0b6c553bb3ab91. 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/QZNWX2569200.