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 0xc31899388d7c011dab43ae0d9907d8235502b47482eb963ff74a5e0534ac25d5. 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/2812601b-52ca-413e-b353-01fcfe6611d5.json and https://artists.proofprofile.net/proofs/artist/2812601b-52ca-413e-b353-01fcfe6611d5.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 0x20c41a5e88f0e57446299bcf1ee2d877f65704a5d21aab5c227721917a2a6423. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0qpirQCGWS82sJWWpMx8iw.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/0qpirQCGWS82sJWWpMx8iw.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4014847d1453e6abdca4f733b1a19537085ae3884c8e19e4c60b654e2b995a14. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3gkrU8B6wLQCKvVeFlJzJo.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/3gkrU8B6wLQCKvVeFlJzJo.
{"copyright_id":"0x8cd3818c4bdfc7d2bffc94d4def76ea9f883c532a2296d06f228d098fd21a670","isrc":"USZXT2250321","name":"The Cold Room - S2-E10 - Pt.2","registered_at":"2026-06-29T05:23:56Z","spotify_id":"6WfythzpVBdPd51HEE8MhI","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cd3818c4bdfc7d2bffc94d4def76ea9f883c532a2296d06f228d098fd21a670. 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/6WfythzpVBdPd51HEE8MhI.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/6WfythzpVBdPd51HEE8MhI.