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 0xe3bd138d82bc06455b4dccb2b3f1a9f86117b3c5d0df5a7f73377b3cb18fd723. 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/763e99a6-a89e-4c80-9fb4-27c3729b8bd3.json and https://artists.proofprofile.net/proofs/artist/763e99a6-a89e-4c80-9fb4-27c3729b8bd3.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 0xf9ef672649751312528f2b78a73eb3359dadb4c99319eed80eab2c3dd610c515. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZNWW2255014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd89f879c976dd78847ccecc0ca0bce1bbbbdb50300009263c01d80ca94f827a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZTB92293336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb3a25a65daa57acb77379beced77d824538397a0e42d55a44879ec0cc0f841d. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T15:13:46Z), 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/QZMEN2320463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a6dd42b439bc962b49751e81d84d9c4e9a51e0337a60dc97cebd81a6bb463dc. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/QZMEN2320465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb798d959293b580369bc75a86d3d28f7c4fd869ba7e7ca64d946b7f7b58aca5. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:49:13Z), 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/QZMEN2320467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8e259888fc9fda07073c05744f3d2098e810e2b8b6708848f217cda2d828699. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZMEN2320468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69880e9ae9646d750ce7a8f6ac07b729e18cbdb7159c2502eacdab15a92f98a4. 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/QZMEN2338888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9041c7e6bd9cf8df60eb8dd5320114f98397ebe757ab5df842a5fea161121d89. 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/QZWFJ2344267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d483374155ef4a5ad5583676b86b69da8349d07485765359b57e20c65abc2c3. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZHN72446363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfaf753ddc8d7770b5e7a10d943d4ba4bc3c4eacaeb5072a2dcc42ebd1d5adae. 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/QZMEN2475942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93027ffd9b8a309f997be80560f61f30f4e26373bc944e4f7c0825b459da3027. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QZNWT2434469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84b215bbafa82f6e486c41ff5e0e8cf8cc2eed7c9c0ce31ea5839bd07dd7286a. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:19:25Z), 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/QZNWW2477189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37f3b59ce418f1f2abce82bb5237d23c24b202e2c3dd3ad9a4af2306b9296b2e. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/QZTB62465026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f2ecf953dc4ef21ccc349ad016995457eab1873c03c640e481f980d0b6a47da. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZTB62465027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9047bf8f8e6a028043ee19fb77d0357161423f4ef290e1a12431d994024d2597. 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/QZTB62465028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6206cbc00d0e8d505ad81bee2df4584526bb866c112c171140bbfa25a1c08863. 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/QZTB62465029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf65b41c8faabb7323b647c3c8084f9141db2634087197fe8b41edeb390086deb. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T20:11:12Z), 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/QZTB62465030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e7610b6e0ab44af25a977261e58acb86f1234e77e5e37ce2b6741c05cef12ca. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZTB62465031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb6fb3dd8d18c0203157b9ec9d40d939cfb4c89603c091b089487616bbc6abe2. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZTB62465032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffb2c84cfccf4be9238a923483fba20936d72d4448ffecd87e41fc618561fbf5. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/QZTB62465033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfaf753ddc8d7770b5e7a10d943d4ba4bc3c4eacaeb5072a2dcc42ebd1d5adae. 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/QZMEN2475942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84b215bbafa82f6e486c41ff5e0e8cf8cc2eed7c9c0ce31ea5839bd07dd7286a. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/QZNWW2477189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd69c9adee29ab38b57d4411b4db9aa76b491a8d055f63a321f861e15d449dd0c. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/QZTB62465034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d0db95de07127c209b9dac530141444aa07cd21545c7d4c8e7e963c36b79d39. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:35:53Z), 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/QZTB62465035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbf1ac0acbf60da820903dc2683ad53a9cdae9f6a4504636d8fb681ee94ce147. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/QZTB62465036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb47ae45ca1c2444beec44ebf007a3d36c46a8d4441b837cf3342259b26e07fd0. 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/QZTB62465037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5355086379c38a238cc22a118740f59b3a5ee8fff446fa998ee68f389836e123. 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/QZTB62465038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccd9d0a45d0fb6a0a91f12eb47e84ed254bfed6eed24f26da572f1f064418fdc. 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/US3DF2438856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x899adcd9d9cbaa1963dc53a109e17a9d142f331e5857fc553742f5197ed5f5e0. 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/QZMZ92533371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f950f668a8584d283309d0a7fd37d4eb63ae6a1a616076f262c2df00a378899. 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/QZNJV2497113.