1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xcca7e3724c2294870b73dee2815ade2162e16014b0354a9b6b3dcbcd439d547d. 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/2c359b5f-2de7-47cc-9469-e46cc320c6ce.json and https://artists.proofprofile.net/proofs/artist/2c359b5f-2de7-47cc-9469-e46cc320c6ce.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 → block OTSBitcoinBlock must exist at that height 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 0xf1669fb172031f81ac172511a1577e4281df26a32ab9c6edf03b016d820fa8a7. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/HKG732145312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92f2b003c1d6713fc3c35f5e6121b30a950446864d91cd492d5f084b2fcf6c4a. 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/HKG732310273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x841714b7a402dad115223115dcf65f7e7b7d12a140be11458cbcfc9e137c95a6. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/HKG732310274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f0905c66ce2c003fa3507e6398fca09c443d740a71c10c54c0c8badbc6752f8. 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/HKG732310275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61eef913ee2997bfd9f1fa917adc5bf5a12fbad788eccda13ef0086d6c995954. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/HKG732310277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d17e4d4c91c06ebe35fe016138d920c15d4936adf992509eeb1c538a5db9455. 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/HKG732310278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe45fe24d2843b07bbce005277e03e09e7ae30cd961de116d4d38673e972d1be8. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/HKG732310279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd34f876b999eeeff6ae24711ca12842e73b881ac31bf47874dfadb23361d65d3. 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/HKG732144141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02fd34767544cda8ad988752231d075a4defce72eae52509156bee80e9eaee7c. 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/HKG732144145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x638ffa7b9b48a242dbbdbfa4583a9877404af9e102a554fadb01f0873bae07a2. 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/HKG732144111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef3d6ee7be451703f8356a487da99dc30dd3f035ebd94ff82e93d118ec1482c5. 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/HKG732144112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc058837b8ab1eca42888f789c60db364e3d6c3ed21cb8511c18ab760923035cc. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/HKG732144115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc427149e5ad1a0680163c1d5df185c57f801c4578dc011e982fa58b3106289fb. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/HKG732144117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03624ec1e3e265c69d81f391104a8254859beabbae7ba9c38850b7188a93b6a8. 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/HKG732144100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3fe3fda21fe66ebc3ffc02d05ebae4d9d6bb5f05464808bcd3aae5afdfcf989. 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/HKG732144103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa875930160e42d30f7582c799f6a0edddaa05953fbad9745083eeb3ae9e66ab6. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/HKG732144104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb8be883568a56a8f6945bcb569abb54b8ddb7638e50a7454fb1fa1411d7ca66. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/HKG732144106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc7cfc999fee5a74930ae56112c4bec96a1bd350924030711831a563036ad96e. 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/HKG732144107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3d195cc76570394e0ce18766921a8c8fac93ccc7fe484b7173e4bffc7ebb732. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/HKG732144091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2c2dcfa1c814b19965e12daeea7f32c931500ba3ce6a17c72ab8854a3c5099e. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/HKG732144439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6beec1d0d0de65f49889904df3f091e79dc5220a9ee652a5cc789f28489b5f92. 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/HKG732144336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47ae81524ffeb8d01596f28c08d4ecab380f1984009341ad6c040e372e8b3ee2. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/HKG732144337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a9918a6b85eb000e839afc372124056be74e6b1a0c0fc32455be342a6a431b1. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/HKG732144343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7a169af447195fe650bc1ee521e4c1acdf7d3c3a383af12a0f6eba99ed198d6. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CNF121901404.