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 0x7ccf7f039a1c98cb9429f1b64c296c9d12858063cd170dbc0ab6ec40342dd2fb. Chain 2 (Bitcoin): anchored in block 953641 (2026-06-14T13:54:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3bc03937-73e6-4608-9a2b-f875fd979440.json and https://artists.proofprofile.net/proofs/artist/3bc03937-73e6-4608-9a2b-f875fd979440.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 0xa7c6b3100d77293da0097c489767fef765619d6f68f1c48f4bcf240e786c9cbf. 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/GBRKQ2311055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e92492e67c233d673de1b1972745caba611b681f76130905d140dc8b5a0b83f. 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/BKNAS2300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73a8d7743292ac14e06a2a73ec9226702feb133ab40de466d393cb50fdcb8e30. 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/USCGH2575845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68b77b93aad4ddab0967671519fe85f763f1ce03e6b27f122e85667456ab5901. 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/QZNJV2493031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x791b54a5e1ab02bc398af8d129ad598a10091958e0539d4995e9f0dead40a90f. 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/QZNJV2493032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cc74b14a6da7397c69bf99635757010b8f58351b885b5339abf861cc5be1917. 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/QZNJV2493033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x853858bb5cf9ef5b35a5e92745de7901562be000bf9f9e688511f70dfea55b15. 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/QZNJV2493034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f26a592cdd50923d1bf327b5a64f7e85591639063ba0851bf18770645e273cd. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZNJV2493035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa97e88a6e48930fb040da022beaf343f956306aa05e88cb46c46e3cbbdbf49e1. 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/QZNJV2493036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x278782544c28335e01cbf5c074e187c2cb9c1a1f61220c7ecad4bf5d3e6ffa84. 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/QZNJV2493037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47dafbbdae046eabea25db886b27f7de987f6404d69f81bd2d6ac31ec2ae5252. 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/QZNJV2493038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1887b44e72866edeb3ba0d4c1d24c498adbc4c09df3ae0ed04e1716f7f7457a6. 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/QZNJV2493039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaedc62e3eadb1b758b65e33cec737339d96543ab038b9f67da7b346f5c5381ef. 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/QZNJV2493040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd01c958328adb8bcf5deb7e71cd03d1a4b3b70e0a307fe02e7aa46ad39e3ceea. 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/QZNJV2493041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8166481e2bda12affd3c0935533683385550c975dce1e36b7ff1e3939bcf60ab. 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/QZNJV2493042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe93aa4e5f5b2629614ee08f71411e7e3e21e0124b57a8eafeced35a9359787a. 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/QZNJV2493043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc472e61cbb5503c061c2ab47e6287c0adb663de720d6c6811ce0621e67f1c2a2. 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/QZWFF2395496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5c5e1cc295e00fc3d95373f4114ae4f860dd88409ac5b0b48474a0d0e6c4893. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/QZWFF2395497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9157eb888dc9434a51ffb695a088870c41ed73d4a7e90df117b67ac30eafd0f5. 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/QZWFF2395498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6269f448bc71b5e0c3eccaede97042445644fe4fe6bf01d12766eb74f5522db7. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/QZWFF2395499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d24deed54db8e3e52a9871767ff1f8794b22bff8b274d1d821e9a79942d153e. 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/QZWFF2395500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f609e6a430d476427b9818b3f3717c8ebd4c18878e0d1defd70da2a316499cb. 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/QZWFF2395501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc595b5a0cb801dd6252f55fe185d6afe7761ffe2b0e537056a106ec90a02346a. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/QZWFF2395502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95e715d09417c2a192cfd5a68adb9185aa8501f0629acab4cef020dd4feacab4. 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/QZWFF2395503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab684e03ada9cfca14e35d78840c7fb0eb4e35eae8ce01a399589a644f86a7fd. 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/QZWFF2395504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeca88733b55c48ae320c4b1afc38797e20e419afa8a4deeb50636778f7d37d3b. 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/QZWFF2395505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ec4c9e3ffa40d59a432ca334e8f1818bec6971fa0faa9d43fd8aa54afe77550. 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/QZWFF2395507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa39281aab17ccdd1610c7d2615971732abea4641bd4510d9f6115ad5a098e805. 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/QZWFF2395508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b93437dd28186d2b157ca53f7b2e9263ac0000a341f6081a1fb0f45b611b8fd. 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/BCUWS2500171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x088ed00a41cb17a62d49d8bc50f89a36938b9c9f871ce2081b7ff5901f572f42. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-16T14:10:54Z), 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/GBRKQ2376000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7c6b3100d77293da0097c489767fef765619d6f68f1c48f4bcf240e786c9cbf. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/GBRKQ2311055.