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 0x15a7f02ee972bf839dc7bf19ecdd9093a0c57f87ba3cd5a3b264decdbe722598. 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/7cc9c766-f765-43fd-ac23-2e80c370b9fa.json and https://artists.proofprofile.net/proofs/artist/7cc9c766-f765-43fd-ac23-2e80c370b9fa.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 0xbc6afc5941a83a4fe7593fd6d9359e86560c745e943d8701f161c6d3576ef000. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-16T01:22:53Z), 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/QZHN41946305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5958114272b678e1116530b8e970b4a1ab421ba3be996d6b0746f1514e35e6d7. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/QZHN41946307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf86c198b22ac847b8df1f607b8c74de8bd9a63f157da6a25e7cd157a15f52a52. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/QZHN41946308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c4806d93b5dfd7e2168b9a1a679238d49219834814213fbb471ecba4e1192b6. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZFYW2118249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8da16fc296db1ffca77d6bdeb3ff0be72a0760137935a5b13cf04fed8a05607. 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/BEKS32200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb2394c2e256e5277ed4c06e7ab06a0c6f7ee9e13bd8452dbecd66c148310f26. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T05:01:20Z), 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/BEW012300070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ffa9640d7c07753377a715be5852c0255e8e1c675c902e9e6d3d9b8dfe32c90. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/BEW012300093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8531f95425e90022a37877bd76b389a89dda054f5716ba0ae8c0c147a3a4e9b1. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/BEW012300132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe62bae35e9a2be1719f015cef2e0c9a6f78a5932e3620e82884e886b054ee6ae. 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/BEW012300155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62f9c2822418fa8141a10bbce44be5ffeeddc3f731434b51e2448e458ea41c91. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/BEW012400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50f2b39ddff5a25f583c363335f416a397c1f0d58ddb7797454364d4edd28ee5. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/BEW012400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa659e7ba09056233466bdec7fe20d87a631f1a85142d090388f934949453423a. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/BEW012400015.