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 0x181d365b82fd40e307a44056d00065f1de5f9343897011c17e7008f49e4aa284. 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/11bbe5c2-70d8-4222-8674-4563c31c605f.json and https://artists.proofprofile.net/proofs/artist/11bbe5c2-70d8-4222-8674-4563c31c605f.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 0x48242a29fc7c42664e16310456d02f357aa5409b520dc7085f017bdeac88cb89. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/FRX201764682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8961030954c1f245723b6b55c71190850e7af1b5167faf69e5545bc5dc648885. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FRX201764687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86703cd2a629c204cde19d0e4785fd759608c6a6171c81300da1a72077535c9a. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:37:19Z), 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/FR2X41944560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97aab78f0ac9e1c8e880e7f47b881cb3ac9a920cecbf797346b7147898a6e3c3. 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/FR10S1981307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6b201605ca1ab767f7c81d74462c6f949db924aa385abb95a0f6cb5ab348cfb. 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/FR10S1936335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x371211f75d8442f9d830e398ae51f62cc40269c4384ae5b8eb21341f73927920. 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/FR10S2598477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f28257c6e7f1bcf32c34bb13afe97d40a38704162a7451029ecf762d30ee8f7. 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/FR10S2598478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dae882dfdf227e8d9279906a7458366e549fb86fa75f218420fdc5554d2791f. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/FR10S2598480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x998af9ef67e90a9f0ab6cff0c265bf3b4fa5800c7b1ff6a7adf379af1ddb98ea. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/FR10S2598481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c11846273e01b5cf6352b7c0d0f3e47235059cde409e784b982ee4d150db19c. 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/FR10S2598482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fe305959c103c41344bc0bd70b60b6ac0d46e9a5faa4e87154514d2b7b15d12. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:33:37Z), 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/FR10S2598484.