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 0x3da3ffd0108775236bee2680a74acef3e6cc9c7dc51372d35cfee7808f7b0ed7. 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/70f76daf-f885-492a-8095-df31f472f798.json and https://artists.proofprofile.net/proofs/artist/70f76daf-f885-492a-8095-df31f472f798.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 0x8b197fddf777870efaee14c477586bb70267a0f2dad693513dcef998a951a846. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5CkPR94CgIV9g9Y8fsaSaH.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/5CkPR94CgIV9g9Y8fsaSaH.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd9e0ed0756571fc1f0fc98284d48c851a5fb739abb1faa42ee62c53f8975afe. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2Z5JTcB8uDEzJFP6vvn8G1.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/2Z5JTcB8uDEzJFP6vvn8G1.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8163682646fe66e4a004bcd92aa2652f6c3194dde119ea77ed6642c88ba1e85d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7GpB7fZZ6314hQWkSRwbsR.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/7GpB7fZZ6314hQWkSRwbsR.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4364c364d1f45cce345ab8e9c3339d93d8166182cb79fee53791e2a2b79b409. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3FBZjkmtLR5YlbvBJsQ9EA.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/3FBZjkmtLR5YlbvBJsQ9EA.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x760743a79f03c40b20cb57bbcf60ccb833310acc9348ac1346d0677dc5533832. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0l5VXrsPb8MZE5nAxA7Gih.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/0l5VXrsPb8MZE5nAxA7Gih.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb80aa919b2bd552f1f2b3a356bc645dca290ef2e301d39ef0753796dea12859d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5MWzDc8t7JNPfOo9LqaMGf.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/5MWzDc8t7JNPfOo9LqaMGf.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb5faec5ae805c9f2ecdc99305396ea82849b9a0746bf67904a1ce2a92f283bd. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/67vvOJ8P5JDmqlDslyVqQu.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/67vvOJ8P5JDmqlDslyVqQu.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cfb4a0eb25f9e6766009e1d08306e07f289891ac6c63eec341697e206d13131. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7phYa18r8cFUYkfYDYuBAF.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/7phYa18r8cFUYkfYDYuBAF.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93f7df8d86147c7516398a7dbfd3f6a8b84897fccb3f3b0b4b910cb869784089. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7eiFPJ94ldePUePWNUnRkI.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/7eiFPJ94ldePUePWNUnRkI.