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 0x749f9dd900396ba87a1c14184c316607e6c4fc2a76eeda69bf95b6e2a7ebe71b. 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/978db3d2-7399-4426-afa2-912a74dc8acd.json and https://artists.proofprofile.net/proofs/artist/978db3d2-7399-4426-afa2-912a74dc8acd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0x1aa206b1fb9a1ce1caeeceec94af3202323fbe02bcac848c07c72208bc77a450","isrc":"USQY51049042","name":"I Don't Wanna Hear It","registered_at":"2026-06-24T12:47:55Z","spotify_id":"1OtwWmXEFc3ZfYjpkb8Dd4","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 0x1aa206b1fb9a1ce1caeeceec94af3202323fbe02bcac848c07c72208bc77a450. 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/1OtwWmXEFc3ZfYjpkb8Dd4.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/1OtwWmXEFc3ZfYjpkb8Dd4.
{"copyright_id":"0x618f272a8aac3dc36b8ffcb30d6db5324e2279214cbfde7ba49a75ab60f2510c","isrc":"USDMG1573005","name":"Boys Can Never Tell","registered_at":"2026-06-20T02:02:24Z","spotify_id":"2eVksnN1rYWlNJ76J8nqtl","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x618f272a8aac3dc36b8ffcb30d6db5324e2279214cbfde7ba49a75ab60f2510c. 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/2eVksnN1rYWlNJ76J8nqtl.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/2eVksnN1rYWlNJ76J8nqtl.