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 0x8d49014cc51bbcef9f736ed4e474c68da06b00a3810c37393fb08a2ae8a7792c. 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/c021fa7e-d9db-4ed9-a4a2-70d4c4f6ed8c.json and https://artists.proofprofile.net/proofs/artist/c021fa7e-d9db-4ed9-a4a2-70d4c4f6ed8c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64fb0f89558472f8bb572c4e9277adb26eee56fbcd889b6639895588daf6b89c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/06VOZJ5WKXd1zqJqspoyXG.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/06VOZJ5WKXd1zqJqspoyXG.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26ee2bd3735b346d2ef937e543a8e67683a963bd07baac1e531c616b783ab297. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6fg7av7CHSn1B7kr0JQPfA.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/6fg7av7CHSn1B7kr0JQPfA.
{"copyright_id":"0x2e48e53551d7f4ed6a2fede7f7acf52e13a8d59cd681213765c98e326fd1d902","isrc":"UKZGC2203049","name":"On Everything","registered_at":"2026-06-29T13:03:44Z","spotify_id":"2u3tpg6gBqKmLlIJ7YrVUJ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e48e53551d7f4ed6a2fede7f7acf52e13a8d59cd681213765c98e326fd1d902. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2u3tpg6gBqKmLlIJ7YrVUJ.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/2u3tpg6gBqKmLlIJ7YrVUJ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00b3211dda57ae72e46b4c9b6b958e64140e991949676b909bb4eae50fb226d2. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7d2wxsNfGm9cFdTU9zu6oq.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/7d2wxsNfGm9cFdTU9zu6oq.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x964ed5091965180754bfb4c023817057185289c0699a9b5218adb4202c2ec11d. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1ltkC7LSsr4JqSLJPiDnuc.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/1ltkC7LSsr4JqSLJPiDnuc.