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 0xa52b74e07d832b393a6ae3b7a74ca62d56eb1cfd1313e3534f15793a482503d2. 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/c6022812-a785-413c-afed-36c87267b1a7.json and https://artists.proofprofile.net/proofs/artist/c6022812-a785-413c-afed-36c87267b1a7.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 0x0a6d35090451e4d50562b4b4a91ec4e98070ec67f909b6de67b2e8f6fade40e2. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/QZTAS2325662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bcedf241d7e5ef9e1d085c2fe98ff935f9285382e596e2958b39da8a7e21f3f. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/FR96X2261868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00d266137705ba4c4301f8ffe8d5c1994616540692eeffb0fbb223bb6953a188. 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/FRX872105596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b091aa0e3985c393935e6d91a4f59c16d3ed4e9dc20780321c35f22341cf8ce. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FR2X42294964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa94111e5225acaac1d396a2867563af9c2e61e33e9dd11bff7a134e378ebe3c7. 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/FR96X2261869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19afc1befb80948aedd105f06eaab643481543b399d5dc5e1e4bcc24a0300ced. 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/FR96X2202363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d86085abfa32660c0fae519bdb04c5d0909506fdac3071de251bf61dc93ab0c. 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/FR96X2261871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11dacbbab8587f2d8b33c5dedbedc975fe7d9b6e4a0cd1c1ea3f0660415671cc. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FR96X2261872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1066fc21580116b54f1c0c1ba9cacc5c3940cf4fb5d334ad8ff884262c8485cc. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/FR96X2261874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6544f44003db2631324f96b84fb441425439df1cb6795ba5fe650a7e0fe6f479. 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/FR96X2261875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dcc16bd4e5c68d2a0d00a0a398dc6a0d132e2fb0346747d92b018db83dfff03. 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/FR10S1994554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbe495fb53c603a3eb81745d0488e1b0c938681c1c275e413e7945b0bf225275. 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/FR10S1994555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb80e4793d798124fd2fc0e0650b84c1a8aef37206d96b7d88622f8d72401711. 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/FR10S1994556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa1db095bf45b3c538f4dedcc635d24262b32340b3a553d5f6cbd593a6d36c72. 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/FR10S1994557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ad12ffd925855122ec60a957b62ec217f5a0829df9c5d3e929e06e89c4b581b. 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/FR10S1994559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4784dd95e9796b6abc8da24dcfd0aa2318b81894b5a4b3d18b7fd9f82f3cdd0. 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/FR10S1994560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7de314e560344507b94a8a2db17391801b679d6999fdb4fb6fac67b1279b9eec. 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/FR10S1994561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5966e0dab5e92d482ad46c6e5d77d0e872ad32fe78e5ecb22e032c136c00b03d. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FR10S1994562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfedc619c708324b520bc9427882b191ba4732da8368852d96ec818a6433af8eb. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/FR10S1994563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67f875ed3a351f829f2496ca453495bdf2fffca87ce3a2cf2301e088fd98a443. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/FR10S1994553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0ecedaf983cd196a15aaf9b7306978e4af9b34a468f3865e2c2c21d3098faef. 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/FRX452382746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd4cba60df01ae6ac0cdf1f93ef1c58f9156d6a77672794d26bf2fcc6697233e. 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/FRX452382747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb4fb2714996bf4682cf15ddd3ff8638cff984a54d46cd400cd162e458bea912. 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/FRX452382749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb503d4f90cacd068d986bd2506f256b9963ec4d6dfce11c071a7507771d6a4b8. 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/FRX452382751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19afc1befb80948aedd105f06eaab643481543b399d5dc5e1e4bcc24a0300ced. 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/FR96X2202363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b091aa0e3985c393935e6d91a4f59c16d3ed4e9dc20780321c35f22341cf8ce. 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/FR2X42294964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00d266137705ba4c4301f8ffe8d5c1994616540692eeffb0fbb223bb6953a188. 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/FRX872105596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00d266137705ba4c4301f8ffe8d5c1994616540692eeffb0fbb223bb6953a188. 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/FRX872105596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00d266137705ba4c4301f8ffe8d5c1994616540692eeffb0fbb223bb6953a188. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/FRX872105596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb80e4793d798124fd2fc0e0650b84c1a8aef37206d96b7d88622f8d72401711. 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/FR10S1994556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dcc16bd4e5c68d2a0d00a0a398dc6a0d132e2fb0346747d92b018db83dfff03. 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/FR10S1994554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x185869fe6421b6d80374fc2758112f647be87d8bcdd68aec156cecb5e6bc71eb. 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/DEAR41715197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a26241d57189c16afe87d28e0a457faf13ac1efdfa803e16059d4f360b70204. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEAR41772599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadc0634b5c9ca44ccb5122234a7cbe23eb3a93a3a558f9fdc6561a824a377ada. Chain 2 (Bitcoin): anchored in block 957246 (2026-07-09T01:49:50Z), 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/DEAR41796133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9a8a05323e67b010c5a4ca987255177499fef7d4b8ecd4550926180dddf93c5. 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/DEAR41734311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec544b98e276df7793843338e88d553bc9980ea6b076cf8a7fe6a935e76d2164. 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/DEAR41756869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x947acf35af0c863c730778562dd500d5d683c5e3a3687c8e56a8cc7058714881. 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/DEAR41728995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb3479b8ccfda2211387caec08382c2c83e0d41f7997c4f1da38aca1da885bd6. 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/QZNWX2422272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cc67281a2af3adbb604095929c0ba5e29db4a7caf931fe7d878a8be7daca4d3. 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/QZNWX2422275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a2f63c852aadf97369de86dac9ea72193b2baaf58f66348122260f90bda797f. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DELJ81915028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32d6f1e8a46c86a46782f4d7c816a2fa1ea1e5b6391de368f567ff24f78fee2a. 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/QZNWV2375120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x994e1fabc7eb2fd651e0d934badb7802c660c929d19d7fb1731bdfc7141f257e. 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/QZNWV2377043.