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 0xa61613dae1b1cdbea943f4c292acc7991a278c29d4565345970ba6c9eb46a1d4. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/89cd498e-2a19-4da2-9e08-39e444952454.json and https://artists.proofprofile.net/proofs/artist/89cd498e-2a19-4da2-9e08-39e444952454.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Multiply by Two (feat. Angela Katatumba)
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 0x73c29d540200c60cd07ee4ad94062d343e957d17d12d010bf8e327054795f25c. 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/6Cj7BNYIsqa6ash8vmHrRY.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/6Cj7BNYIsqa6ash8vmHrRY.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x127ebc4e0ae60bc567fa780bd71c3cad51d700671c9a78f5cf80392a188ecd9a. 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/5KHK45YlfdjimQBh6LCnb3.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/5KHK45YlfdjimQBh6LCnb3.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x103307d9560620afd8bf67d6f6d4ee2c042c2c9d2445a030046cd3d9201eac05. 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/0vAt1YljPQoIuU4uAK75V8.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/0vAt1YljPQoIuU4uAK75V8.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23be545bd7215136058152de5cea90fb6abdf6f259fd96e56269d56cc04a25d2. 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/1GcsVNtONJCYswVzZVwrZl.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/1GcsVNtONJCYswVzZVwrZl.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9fcecebb90ab2d41c3e7f6b8bb1356b149865426a2122c724241ee3b2c90c8d. 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/5RdgfcZZ3qkhTzjq5SO6b3.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/5RdgfcZZ3qkhTzjq5SO6b3.