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 0x072224b5586d861fba98ce38065b16b785dc94811a7e9500db93771a8707313c. 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/1b9ad598-29b2-425b-87c9-a343a71f0af1.json and https://artists.proofprofile.net/proofs/artist/1b9ad598-29b2-425b-87c9-a343a71f0af1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0x946a3be5ab8cfc82243f35eae47172d1312a5bbac88fa182e4fb5f6d17536e0c","isrc":"AUFF01400616","name":"Stand Still","registered_at":"2026-06-05T04:51:52Z","spotify_id":"1m8Dobi1qoCZE0FBOkmXAR","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 0x946a3be5ab8cfc82243f35eae47172d1312a5bbac88fa182e4fb5f6d17536e0c. 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/1m8Dobi1qoCZE0FBOkmXAR.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/1m8Dobi1qoCZE0FBOkmXAR.
{"copyright_id":"0x7254da04c8a5552ea1ac9777f3acafe2150998534fd4c7f6d336d9162ec276d0","isrc":"FRZ081300236","name":"Chou wasabi (feat. Micky Green)","registered_at":"2026-06-04T09:00:39Z","spotify_id":"1mZbP5dp7CAU2qZI2I6OiV","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7254da04c8a5552ea1ac9777f3acafe2150998534fd4c7f6d336d9162ec276d0. 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/1mZbP5dp7CAU2qZI2I6OiV.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/1mZbP5dp7CAU2qZI2I6OiV.