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 0xa20b326bc9a51c66987840a8f9644cd15254a01969a272ebbbe7ceedaa08e440. 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/d36f9788-8d2c-4169-b150-f33298d63745.json and https://artists.proofprofile.net/proofs/artist/d36f9788-8d2c-4169-b150-f33298d63745.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 0xa27365473cdc94916df29bd006e10e0eb9fd803c3631c1f256061005001d4d17. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCAID2448386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x258697bae0b91ed626cc94c02a928f2ea6501a0a65cc389cd794a7ae7952078f. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:04:44Z), 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/TCAID2448389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46108d6c62652ad9508451cb6d961e95a6b61bb1902551b62912d4e97246aa04. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/TCAID2448394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34a22394fd624120b4aa57548784881a985c92806cc2e75d1fc0784a2fd810a8. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/TCAID2448396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88b4c138bc68f4de57a37e298aefe952c8fe2730710feb6587ce5949d35bd1da. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCAIE2448399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadf45837f501790b4906a87c857f97de8946900e4a09ff9d13086d1c443b8c3d. 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/TCAID2448425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa89b8a98dd031898e28fef4f82361b26b341aea5f904487d9e19939b9d92735b. 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/TCAID2448407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x314a78bc9a00a281506068fb73826a03719152a3498d60d65410f645eaf8dc08. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:22:13Z), 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/TCAIE2448412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf49162e36f3c69ce13985773849a14e99d8205176afb0e83913efdbcc1352a19. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:40:30Z), 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/TCAIE2409150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6685f25cb6afaef60ece0bae66fa858bc669ea4266be3f89879416e2a07596b3. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/TCAIE2409154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a53f80c5cf23a22c72deabf8ac6873c6c1a7d500d2aaae06b14adcd696d6f5b. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:34:40Z), 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/TCAIE2409157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1b69ed9da74c5069690f259863a53ea92f82f9e34517c7c129d7b1ba610096e. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/TCAIE2409161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8b87e362655dda5dac252e03d89b097943f925b053aa28e402fe9e136443a4e. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:20:51Z), 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/TCAIE2409164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb86994cade1ff655940612117cce9e3d215c6830e6ece7ba1fda3ecf1570a9b. 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/TCAIE2409168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41b26545244c463f3b6a019561a66674650af9c7050f30dff2f95b8556656950. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCAIE2409172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9966da0899d409482b66cfe92761b6deee5854fe2093bbf3f99fc1f6e06a466. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/TCAIM2424000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbfa43800e40ff99efc2c27dca5a551bdc1b680025f5c7f3bcbed54a27bfd3e9. 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/TCAIM2424008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f4b33998b5e09c245434002a49b74235e619445418ee436d9321b07f6186861. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/TCAIM2424013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44b22656a2a00d735c945dbbcabf4a48c1d4a0d9d259a1bf45adf2355f63f7b3. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/TCAIM2424017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9be54cf92c91bafba8a9d5bfc93b71dd1bd94c4c4cdc7b5fdb4a4d3ba3fa885a. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/TCAIM2424024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cff0d108e3381f4b5bd65e44e39122fe3bc47ad0785d3e9f910458d122c95b4. 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/TCAIM2424027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb4481cc2d311dc844255c41806b12a4f4d205bcfaee28110f51615e182d0828. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/TCAIL2424033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4410c6cb30c63f77b29d18631d95793e71beff7a41400796b5ff2d0045464f7. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/TCAIL2424038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ea7a577cc499190143b8f54a913c0d5eb06d41559f160db1b6063c8a61e295b. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:34:29Z), 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/TCAIM2424043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98f67b631647f9df2d60ba4b2af1368289066b2daf4de31401cc01a12fd6b9bc. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCAIM2424047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf98401f66c93e3c3e3e6b737d185f99cc0ffe48448d964043a7d660fb9d2b8f5. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:27:24Z), 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/TCAIP2493672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc1a58536df8e7009048273c830c17eff7e31b7d61c91c7945c7938b5c438320. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCAIP2493679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ce5f9e707558d6d8230ad1f7c8ae2d6f80dafff61eb3d1c88ecfe9b8c15ba61. 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/TCAIP2493683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x451fc20df80d5f97dc598fc85bff7fa9222be61960140fe8addd14666d62846d. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCAIQ2493687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05dcfd8451315230074a1e1643fab83f4aa7a2648e97f2627b529e4fab82ffc6. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:24:22Z), 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/TCAIP2493690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c27a28b73ecce5676975fe500e692d1d91588e3b7e682a4ed6c4d855411e7ed. 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/TCAIP2493693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d8bffd06ee2c65db6df74d12d3b49480ba2ac5d3997e764345efd072e38321a. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/TCAIP2493695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaa8abb677e4404b2e8f8c88ba8ecf62ee295430a392fc7c8e3d7ba961020501. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/TCAJN2582309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93f099402a7e4fe6ce82077f0e42250e71843932520563e55153ae7885609100. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:01:31Z), 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/TCAJO2582317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa23cf4b3e8e89cbdca82daa708f05f467e3e37e33d3f66432b52567563337a4e. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:28:53Z), 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/TCAJN2582322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5e60184aaf41106663172deb894e8fea4cca60363e90e760a4c4a577b559b75. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/TCAJN2582332.