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 0x6406ea137bff71a943d0809682c0ed5256855657a93b10a37436a508ac0c7a15. 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/5276bc0e-7f5f-48e6-b5df-12af7148aaf2.json and https://artists.proofprofile.net/proofs/artist/5276bc0e-7f5f-48e6-b5df-12af7148aaf2.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 0x01ffda946b39703bdf17ece07e8ac0442e55b1106bbb2f3abe1311f8cb78d20f. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2MzRcvs9oKQVD17pKQhw5l.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/2MzRcvs9oKQVD17pKQhw5l.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b00e274d2337ca2eb1be1a31d19625eeed0988015828b6b6dc2b7e89037cb71. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1kyUkJMIQlUpUW2lmLhABS.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/1kyUkJMIQlUpUW2lmLhABS.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01ffda946b39703bdf17ece07e8ac0442e55b1106bbb2f3abe1311f8cb78d20f. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6NGstrius1iO6kHgxiem3A.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/6NGstrius1iO6kHgxiem3A.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b00e274d2337ca2eb1be1a31d19625eeed0988015828b6b6dc2b7e89037cb71. 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/0nr9TAgIi2e2EfGNwqUmA2.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/0nr9TAgIi2e2EfGNwqUmA2.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01ffda946b39703bdf17ece07e8ac0442e55b1106bbb2f3abe1311f8cb78d20f. 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/4gA2XkP76EHxcH67Y8UhmM.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/4gA2XkP76EHxcH67Y8UhmM.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6409df9ce52301970584bbe51ecde919ad7ca418209137a5ae1516399462e44. 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/5iiLQAYIkqL7wLV9drOXMa.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/5iiLQAYIkqL7wLV9drOXMa.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6409df9ce52301970584bbe51ecde919ad7ca418209137a5ae1516399462e44. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4xFmz82u43la0Wbuoh97Mo.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/4xFmz82u43la0Wbuoh97Mo.