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 0x8a4a06b49d3e699c923b0a99519bb8a718fe42c5ab7efd20697ab56113adb376. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/625689ef-7f23-4e50-83d1-39faabecf5a3.json and https://artists.proofprofile.net/proofs/artist/625689ef-7f23-4e50-83d1-39faabecf5a3.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 0x112509bafeb5b25164c48520bece8a3790b515ca207a102b280bc12a808cb2a7. 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/SEYOK1939117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a2aea75d81c89ca61aba2e80939fbb19aab34a43117bfa4230dcb254ec8483c. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/SEYOK1939119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dc0e4ecc883988e0d021eca4593009db748d1140cb3d7f7e36593ee64bd328a. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/SEYOK1939120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf540016232d2294134a84e846d48aa54774b946bd167ffcf9bff8eb76ac8f22f. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/SEYOK1939121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2fb1c65cddb6bbb4fb55503f248dd502d990a330b4b1c965f797949914b003a. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/SEYOK1939122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9ad227deec2a38042d4cd232a702a02cfd87d26fe157da901a0423a5a311422. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/SEYOK1939124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b0186a0107a7913a5a1b64dbb89130ac3071e235c46940059a8f9cfcf8b7506. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:22:23Z), 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/SEYOK1939126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42d18569bcfdf5ef7b014a7bd2e6f340c383548628eb28d4e3f54b4aed2f1c4e. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/SEYOK1939128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x451d580bcf510860b0ada2708b5eff1363d98684e647d9455f3d4f4a9cf99df2. 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/SEYOK1940732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3b2db0788dbca3e13244ea7783ad56c1a253a7162481e8763e27851bc656dad. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T17:45:40Z), 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/SEYOK1940733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4615e75461b611b9ca7950db92015dcfab64c83682cf9c0eb8a5b2e942f8c511. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T17:47:04Z), 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/SEYOK1940734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fbeabf0579ca0a43e93d7d5c9417231d388d1768d438eb6342886abc7b9663d. Chain 2 (Bitcoin): anchored in block 958143 (2026-07-15T10:15:04Z), 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/SEYOK1940735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cbacbe44b5a6d4b8c723e931ba9e9d69a5d6f7027aa6cc2798df20cf07a24b1. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/SEYOK1940738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb46f36fc68493bd7e4f67df2057c2c19993faf7ea19f0970c5e7fe5e25aafab0. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/SEYOK1940739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd245fc9748fd78702f87acadd53a750c74b10e6ea0012272c2f03d47183cda26. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/SEYOK1940740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11641c6a5918e4f2c15c4c588f4256d3ad1b427ed212a259bc4bf4a2c0197ff8. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/SEYOK1940741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fb40db204e565ec44bded0983822f68c4cff61c02b817ca3e87bdeae22b8072. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/SEYOK1940742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87087ed0d9e7eb4c4a1e26cef06a916ac6a65cfd3a22bb98344c1a03939ab7f3. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T04:02:25Z), 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/SEYOK1940743.