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 0x5cf0c68921babfb519b86ef1829c0bdf6bf547368fca31fed964851cfd1dd8ff. 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/72ccfcc7-d35a-4ffd-a0cc-8512443790ac.json and https://artists.proofprofile.net/proofs/artist/72ccfcc7-d35a-4ffd-a0cc-8512443790ac.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0xa53832b2a5a437b83a1290babdff34285d92a5d94c0ba6d1c4d6d266c530b2eb","isrc":"QM4TX2026249","name":"Kathise Fronima","registered_at":"2026-06-29T17:30:16Z","spotify_id":"5Gh3rtLvaMMW0xMw8Q8Vod","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 0xa53832b2a5a437b83a1290babdff34285d92a5d94c0ba6d1c4d6d266c530b2eb. 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/5Gh3rtLvaMMW0xMw8Q8Vod.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/5Gh3rtLvaMMW0xMw8Q8Vod.
{"copyright_id":"0x5aca4ce4f7018b4d3ee874224907efd9e6aecaf4ef1e57818a3d4fed8b5365ce","isrc":"QZWDE2303491","name":"What You Rep - Greece","registered_at":"2026-06-25T20:47:08Z","spotify_id":"4XcOvxSLLIpkiXrL7Xdnrc","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aca4ce4f7018b4d3ee874224907efd9e6aecaf4ef1e57818a3d4fed8b5365ce. 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/4XcOvxSLLIpkiXrL7Xdnrc.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/4XcOvxSLLIpkiXrL7Xdnrc.