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 0xd956e2aee60a8a40e26d0669edfedb346e6d556d3db47012ddd5b039afe2e7a7. 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/e2ad6070-7602-473c-be67-cb22780ef831.json and https://artists.proofprofile.net/proofs/artist/e2ad6070-7602-473c-be67-cb22780ef831.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 0xfeeb7b008c95beeb82ccce3ec25bc234fa966527b832b4828fb2ba9d0fd15b43. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/QZFYY2021030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6703301b571d4fcf0f2c124d8a93545bec0777faf1a21149e0ce51cac838981. 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/QM24S1705628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x056d9da4f9b1b7947a38b31289d11749b051a3bdd965eed2ccc4fb175b372673. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QM24S1842799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb55f50da3c1199b53365575fe2713c01d3a7da248cb53b6a54087ab54cbc93e0. 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/USDXS1909033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x496ff05d7742ea4563eb4c6bcdd7bd671c3d64358129e46283558b39b37046e0. 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/QM24S2203451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dd0d9db44547ab8c465da8a9083853f30e10196074a3a890c18caf30bb0b0d4. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-22T01:10:15Z), 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/QM24S2201451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x422fd50e2cac5fc89c522b10e112068db3dde466f0f6515a3bb74fc9b3d41e8a. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QM24S2206504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f452bd7570804be4a18a61b13899a8271630b560a742cbffc9e465946bbd7be. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T20:23:02Z), 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/QM24S2303921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x237a824acd45e68db548434690a443f51efbad2e9bedbbd389114a3bd6e9cb64. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:26:30Z), 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/QM24S2303920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf88746111d242b0605927b40faefc24b10c833ab9e989ae8b21905b652e0f70. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QM24S2405328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28c802d599de3882e00e98589367e86af1d8ab834474bc0211ce75ef08ec7818. Chain 2 (Bitcoin): anchored in block 958785 (2026-07-20T00:21:36Z), 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/GBLFP2597338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2b58a2a088794cdf1e04afd60bb930a62a174ae2295b3560d1d11aa82e016fc. 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/GXH2J2521709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc19d483c292310ff3f23835a3a419ce627a9d40e6d74750b2edec52682dbdec4. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/GXH2J2584496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x197ce55d0ac307f48eb3c3c7a492b726acea9f07fbe522a61ef27b9283a84e90. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/GXH2J2584497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b652d49a18b93b8c28b79331b1409514e9330d0ebb10c81be5c4a0fd4ab9635. 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/GXH2J2584498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13f9219400e7e8aa31bef36bbce347d96324519a17a9f14cef0b4f1977274bd8. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/GXH2J2584499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11148a77bda8b60a426d8a85c07b37b1a04591eaef7ee179eedfb63966445a0a. 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/GXH2J2584500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ea587e1c01328025aa3561c15e865b0a4ca6e6962ee7e119f94f8227a26fa23. 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/GBMA22590536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11bb59796f2694c3cfa190c1e7ce444cdbb112b3cddeffca5f63ea34bc2c77f6. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/GXH2J2521710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeb0f0694852c11652919109704f4ae8b00ee49255c7e614e449ab9665bd0530. 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/US23A1534004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x731313f94350e21be99de68632fff18782b2ea2d5fba798cb586827c599bc3b2. 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/QM24S1700494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x359722058710dfbbef84d1fce4548568302b114120f74ff3a5d56229c2eaf1b9. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-22T05:41:04Z), 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/QM24S1700484.