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 0x9f728934178b7346f8355519ebf49222b7954223b7ffca955b23c8aa7e460bb5. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/27caafbf-b1e5-47ac-9385-27a811712fb1.json and https://artists.proofprofile.net/proofs/artist/27caafbf-b1e5-47ac-9385-27a811712fb1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0x93ae1ed4cdee90bbe53a8048dfe2f85f548af62cf5b404bfb6c77dfbda9fe5a6","isrc":"UYM122401944","name":"50 Abrazos","registered_at":"2026-06-29T06:21:50Z","spotify_id":"5SmN77yWTskuaa9qp5TbMF","type":"track"}
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 0x93ae1ed4cdee90bbe53a8048dfe2f85f548af62cf5b404bfb6c77dfbda9fe5a6. 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/5SmN77yWTskuaa9qp5TbMF.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/5SmN77yWTskuaa9qp5TbMF.
{"copyright_id":"0x8a433a2f6c2b50aac5233e72a4b01ee09ace385495f9e8254f5d828af0851595","isrc":"UYM122500133","name":"Suéltate El Pelo","registered_at":"2026-06-05T06:24:22Z","spotify_id":"4xIwbAVBtBnHqryAyAiunn","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a433a2f6c2b50aac5233e72a4b01ee09ace385495f9e8254f5d828af0851595. 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/4xIwbAVBtBnHqryAyAiunn.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/4xIwbAVBtBnHqryAyAiunn.