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 0x97309cbaa64fc036188ced884e2535de784f44106a4653b917427a4be5fc9ed1. 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/fb550994-b08c-40ce-97e9-61dda812ea71.json and https://artists.proofprofile.net/proofs/artist/fb550994-b08c-40ce-97e9-61dda812ea71.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 0xf4909cb04457ef710f24ce50b4d96e945bb52102947e224e5503e49812fed3bc. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/JPB602059901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bfff20d01db7a144b47678b2a4e391d029807a8a4d365ed715f9151310d63ce. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/JPB602069178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2017815021d201cbaef8723f6254fec06945ec726f33e087fc909eb0535f02c. 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/JPB602069179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7988371e6df7af42aadc72beea69a23396d6e763834d9ec4616d887ec7107f8. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:28:27Z), 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/JPB602077755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73e769b659ff89774274c8cc7f619f831734e540cfadd76620ee87a07772f6d4. 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/JPB602077756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfab23ebecca5680815bf782d484a01e8143829564cfbd285c4388091427c1808. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T13:51:27Z), 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/JPB602090843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x755e6dc20dd3944173be742e040f4322b2eec6ac90e314a04d2940210d4c78f1. 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/JPB602090844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c01a0de226629f530be7cf4f525d4d797ee698c2eafba3c1a7eb645361d3ff3. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:20:18Z), 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/JPB602094457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a81d7d674f1cd653b73edabb8c9607bc9a91f4a51a78b41d33e3c30688838fd. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/JPB602150363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6b057f3c78f1a311f53e7340f70838d29686eb8feea6362d818e4a87be24d88. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/JPB602150364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e193bc1f7e5a3cfdf889b8c85a177077d6e32cd37025145599b3277dfa98bdb. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/JPB602168688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55c025e9b4883b111244a8bdcd5efc06dd8cea6947658e7e22fc128e51ece373. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:51:20Z), 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/JPB602179549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5893a34c8310a5cc6cc9a9b9a9a80742e9d58078ac2c239bbc5c4d35f2cc39c5. 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/JPB602199157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x849c07ad104dff253e46051c469fd23684bfebbf17f2c10c79d8745322159bfc. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:32:19Z), 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/JP92N2229415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43fa00783090bcc113cdd4a81d70152f0cee50e1df32bfcd1e07b4baea251e41. 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/JP92N2234089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb678f9436a0130d7f76885bc34fde73e03bc0643c03a29490a7fc4714c10bdb. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:27:41Z), 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/JP92N2234090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69921d675168b91b446bc8acdfeaf25173963c8333216e88dfde2a64957b5d54. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/JP92N2234091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb6ae84f4958b1694f4ec269c073c4726f1eacd32fbc8d8a6843b6db2c9fc749. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T03:48:36Z), 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/JP92N2253418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd60ed913d1f8cfcb5e16dead8db7d45fa6b2507a14d37b3e7c07ffc80e0b82db. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:44:56Z), 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/JP92N2253419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01a68f229806ff3cfb372053de72d2c3410844fa446554099818223a04693587. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/JP92N2267959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a17674ce1224113c40374cb0aa8d32b6d0a27ab784e2ebb8ab33e4bf9682c32. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T06:41:33Z), 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/JP92N2267960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34e876bf1ac7680b828e851d026df6d38b6b13d222d0be6ce969f8d88a3f4ca3. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-16T00:13:08Z), 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/JP92N2311501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b4b2361585849d99149437985e8f4a3b21e3e3a14b69315593c9840517f3db2. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/JP92N2365975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d592bcdbe6009b4ff0214c5c864e9b6119c1e4b0f5b87ed31236c9859e11f02. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/JP92N2365976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b63b4a56a3d6d3dcb328355c26c5a9d3da9996f357f993a724f6e3a4961ac27. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:59:40Z), 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/JP92N2372876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0d67d149963e0cd64053108bd333944190864284c3f7cefc54ac5c17519ee86. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/JP92N2372877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4ff0df18f79025b06c0dbcba2066d9a0f390aa1a7a7a30560dfa8d5ddbfe618. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/JP92N2424232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9234164853cea1735c3cda73827b81951299fc2c19c2d996d490f389f22b0299. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/JP92N2424233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0184d66af528f97e990e2bd02597374b25423235462795505e6f42d0e33d92b6. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/JP92N2428965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ad93e50e2dff48506b2030627cb44343e10db2a5f8b2cd1344e6ca685d6e88e. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/JP92N2522557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd25c1e1d9272f12804e8e1e57338ab9ce0eeeb1c7688c16883516985ae022124. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/JP92N2522558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3f9dadf9b77fb34f938c8423ce32a79dc59907a9b9dd009bd93e19881e10227. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T15:03:01Z), 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/QT66K2566414.