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 0xc6e555fc33c9c8222dc4c2bba84d4ca847e82ab22f7e047522494576cb0c71cd. 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/369e2fa4-805c-4148-b86b-ab250fddf55d.json and https://artists.proofprofile.net/proofs/artist/369e2fa4-805c-4148-b86b-ab250fddf55d.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 0xaa41e7fe17ec13d988d903fe7c4e9a4d529eb9b9cc9b14e436fa42933f7fd958. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T19:04:13Z), 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/BGA672067103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x779fec7ec5431aeedfcea1979859ff573092623ce975610343cc62f53f39c9ca. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/BGA672060608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f44c62b306a957d9ce78a37635491b15915c91a49a91afa40f3e6e5b2a346a1. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/BGA262150401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc580c2e4cccaaf597049fa9bf40c117440e8a586fb193b2f4a375c32ade206a0. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:50:49Z), 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/BGA262150001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5ec9f4cf4a597f19a6ae8a84fc33a3b8e791d75d82229056834fd47081b70f5. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/BGA262150003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeebb2c26f150af9d30a391e0df4bbfd0de6a4b4bf6d3fa5fae65171847862f7a. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:23:40Z), 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/BGA262086802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc077619e82bd66f8741d539ef219e1b58d866342d1d34d6f2644c7772aef526. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/BGA262086805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96fb9f134ea97fb6054f02fb51373c3e8481734834bec935bab85bfbb2c75144. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/BGA262086808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e88cea2cf55c48529e15f9545c2dd33117bf1660511428a31c5e6069831d2e3. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QM6N22179087.