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 0xbd9a4f8b14b746186e4e3aa8251c1ae10b7a28f47c756c7484668bc646c4023e. 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/02b650d6-71be-44e2-8eb9-a284d3f2955c.json and https://artists.proofprofile.net/proofs/artist/02b650d6-71be-44e2-8eb9-a284d3f2955c.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 0x47cb967db041623306ce3216770cd451fc122f380b6fb83fec7ec7d38ff14012. 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/1yx3NZHo3H1APM30i9bcaR.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/1yx3NZHo3H1APM30i9bcaR.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47cb967db041623306ce3216770cd451fc122f380b6fb83fec7ec7d38ff14012. 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/6JjAjapTyVkg2igtlO7LuG.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/6JjAjapTyVkg2igtlO7LuG.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f4295f17da817b22746a37d4ef61c273afc5f274dde7abe9ba7657ab285b438. 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/5O5zKfWBiq3XEDs2mXGe6U.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/5O5zKfWBiq3XEDs2mXGe6U.
{"copyright_id":"0x0df87d1cb775f8bf392862c13fed212d91c2e9565fafa6e4255481e2fd2ebdb2","isrc":"CA5KR2320843","name":"POSER [N3WPORT Remix]","registered_at":"2026-06-19T08:02:32Z","spotify_id":"4WqGcKp5dnqj8nCFbV9Af3","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0df87d1cb775f8bf392862c13fed212d91c2e9565fafa6e4255481e2fd2ebdb2. 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/4WqGcKp5dnqj8nCFbV9Af3.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/4WqGcKp5dnqj8nCFbV9Af3.