1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x9520d65dd145b2ff66db134ebcec5fd15b4481044d312fd25273c05ac834c3b9. Chain 2 (Bitcoin): anchored in block 953976 (2026-06-16T16:55:36Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2b1ee711-e261-497a-b36e-3e0ec8949a5b.json and https://artists.proofprofile.net/proofs/artist/2b1ee711-e261-497a-b36e-3e0ec8949a5b.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 → block OTSBitcoinBlock must exist at that height 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 0x14b49c9176c455cb0db8a06f2c4b1b200ec487ebcc32d6cde3f2dc8192c1fab8. 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/QZWDE2257389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c2d2e776ae7b453d880a6b7f090ed6ca229ad5a335a013c60b57917ec16d558. 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/QZWDE2358150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27cb7248eabb3ff5c7001f70d533431ca4211afbd6f385fa871cc9a3a1b02b22. 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/QZWDE2358152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fdd0698c88ee30887ddae151f2805f64654496138a4b9bb1291465ebabd49f7. 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/QZWDE2358153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee3121735bb845b274bb61f40fe6c45d54d4236c8384740a9eea73a82bb489c5. 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/QZWDE2358164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5d889113f9ffec7a45e056896ef4da9eb09f529ae131302515222c58317a603. 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/QZWDE2358165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56a33ae12273c75662e87f8b11d6ea26ce6e08b30c28f4b8d7005ba94a478603. 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/USLZJ2370235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ba84fcc5725d3e605cf826619c0dcf276ae3510763542ca8e317df7743359d1. 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/USLZJ2370236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14a257dfb19eaa241600f79bf9c4a1e19839e4f0feda600fd3b3d07914364b27. 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/GBRKQ2436272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b6095da407d69e7cf96c8dec51622d84b09337b38f37bac0ba585562c59b296. 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/GBRKQ2436274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5595a3ce40c765b229d609bb975b8a4dc7fb88a01c17134fd03a0822fb8fcfd. 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/GBRKQ2436278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd93cad15c22f724cb4b0f53697580e210486b9848bf6e722e6e48b207a333e21. 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/USLZJ2447856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08468fae35ae29fcd5cea24a1f14f15b965adbc33639209f5d7a6fff29c5f750. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZZEB2313124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe25ff2a3fc47d6263a24e802f2f69e2cddfb36c006b1d541281f61a3cdf92db0. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZTRX2394404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0820d6016dfc0c635214c3751c8c5d1002b38ff48c3a8592c5d3ce8ced6ef78. 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/GBWUL2262053.