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 0xab88a2f21a331e45e9e316efdc70f3cfb5475882fd33cc72b9dda4f1a02f2691. Chain 2 (Bitcoin): anchored in block 953765 (2026-06-15T08:55:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bdd8038a-1db3-4971-ae69-170830372ce1.json and https://artists.proofprofile.net/proofs/artist/bdd8038a-1db3-4971-ae69-170830372ce1.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 0xecbbace8c809cfe4d1a7e19f1fdb579f0a75e13e721f8ffd7a7ee6b21aa58453. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/ATEU61800023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33923b115f1b7e249853421a9fca4f8010d3370b38edb7804ed73737155dc4b2. Chain 2 (Bitcoin): anchored in block 958865 (2026-07-20T13:07:39Z), 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/ATEU61800028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab9da39634718ba822ba014e154a26a6508fc9edfeaa5fdbb68903f65363b757. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-22T00:59:44Z), 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/ATEU61800030.
Schlager Medley: Wir grüßen euch / Großglocknerblick / Du bist die Rose vom Wörthersee
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0a32cfab74e935273d49ed6ff53d4137f089037692095c0f5b41db3255f6a46. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:29:01Z), 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/ATEU61800033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x528d115054c771e7ff589573aeedacece3b297b54845f0bd8cc3addb56774aef. 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/ATEU61800036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8480b3da3cf42d15bee55ca6086b2d7f390215a3d7d633e0ddef40f93bdb9503. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/ATEU62300039.
Landluft (DJ Restlezz vs. Chris Diver Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1c3877e49efeaff13fd6cfe115fec117be00cde0c9db2a419edb5c0faf55eb5. 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/ATEU62400040.