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 0x06468844bbc1322425112944b6b6825b55475f4f34eb48567760cc1261ef4efe. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e44a597c-e77b-4725-98e2-f211fcb5e1d3.json and https://artists.proofprofile.net/proofs/artist/e44a597c-e77b-4725-98e2-f211fcb5e1d3.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 0x067a048cd3761e4bf635518382f03cb7cd9a4b82d07acda9fbd77ccb29395a6a. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T13:43:42Z), 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/USHM81763087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf82623a12a5c8286bb1b33c5a0f02029030e08c1934bd6990a20ada9a8c87da3. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T02:21:53Z), 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/USHM81763089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde75751433c7c0ec8bbd75a39086208e12eb0be891dd624fab046024d93f9d4b. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:12:57Z), 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/USHM81763091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d9a9a837629c740f2812ba4c86b55ebb77aded9f6e2593609bef894a46ff6ba. 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/USHM81763094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d777b9378efa2f103f58bbb9a37511fb8adfae245fa866cc9d79c345f456c75. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T21:29:52Z), 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/USHM81763096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c7f8028008d8fc37edc1752da0f6be57d7be84bb80a0caa1f5e8c6fbcbc67ac. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T09:37:49Z), 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/USHM81763098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd095ad622041e2ca695ff63a6d9bb8a0153dda52e2beb4977f28e7fb4107e0b5. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/USHM91762212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x885c58749c694b7662a2664fed12e63de25f30b9f5f4ae83933090218027b07a. 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/USHM91762213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eca4b8483a641503796b170a8134078894c5de44a0715e2ebcf5d5a30bde65b. 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/USHM91762214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6091c1caedc9f72fedf941c55e082fa68df6d9df999cac25b7d79c74a5b2ce3. 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/USHM91762217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd64497c754bd3d1256c2a2e4b3f31feb438ed7477342c3f4fe07e5f5f89a9d6f. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/USHM91762218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18619b6772fa4c31f393ff3454f237720522180e4af778c38bd7a3afa8a989c2. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/USHM91762219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e1b1cfacb848e24e50fe2e1c18bfd59c576f3edc1c26bfc15abf5c9f37da106. Chain 2 (Bitcoin): anchored in block 957603 (2026-07-11T20:26:17Z), 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/USHM91762220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2dbb0ea213ebb3938b59720a160ca7416ffed3b824e257c43f9a295fff97561. Chain 2 (Bitcoin): anchored in block 957599 (2026-07-11T19:42:17Z), 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/USHM91762221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7d6b5f2df5545a10c77c2cb149b8251f3c88c20db5a31a33926e7f76fc6ed07. Chain 2 (Bitcoin): anchored in block 957603 (2026-07-11T20:26:17Z), 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/USHM91762192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51540c923c2f058b096923ee05575f731ef7b4bea0f983fecf538a32e735a209. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/USHM91762193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e1c77f94b447189be3acfade926f6c069f3896be181d81fbb20c5466e3ca775. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/USHM91762194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43abad9ded63bd50e4669a099022d6f2792ce4b246e5fdebc49df43a1caae0e4. 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/USHM91762196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x952a924dc621da52c957b4d0149d4b005778337907de66dbc1bf5c7630abea4d. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/USHM91762198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9d96097c4081e981891525bd7122c6b4c56677730c3c188e683fb7355c1176d. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USHM91762199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05b68476b5bd3802435e0f9ea162bbe54c9ce1dfd24339012b98407e304c8d18. 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/USHM91762200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd769dc7799ff265ca389366ba059ceb53fe4f29e44965ab999fdcdfc6ea9b930. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T13:43:35Z), 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/USHM91926133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe61bbea6031ad70c6d56c85cbcf7bbd4f93f5a14c6b6ab01536a46019d7788f2. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/USHM91926134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37990393dacc6d25c86d7ab2b2a656c41ab47ebe3f444ad65ddae1b182bb5b5b. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/USHM91926135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9c6483a22088becfd79df36b85570decbbb6348588318a82d5607ba55a136a2. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/USHM91926136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbec806ad69037baf093794898f4aa14115bcb731635cbd6be45537632ac3f6d. 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/USHM91926140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x797e5dd15dd931100fbd1f9f6a0e0ef94deb6ba2ca6621dad153116881e75ba8. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/USHM82406521.