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 0x69cb587136655b00df4084d0ce7a00e310744f22c4cb18fd7f1ccc4eae8943f4. 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/b37a447c-36d7-45f9-b689-ae3043c5550a.json and https://artists.proofprofile.net/proofs/artist/b37a447c-36d7-45f9-b689-ae3043c5550a.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 0x86646963c07361a0e28bf092d7ac1a5369a012fcdc9b1ec9bc3a29761d46b2ce. 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/5RaSNzks9Brz88Az4oGZYz.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/5RaSNzks9Brz88Az4oGZYz.
{"copyright_id":"0xd01f8c7dac896f56f40113924e835f72608d2722a01ea91c04f57475ebe0c8c1","isrc":"QMJMT2003004","name":"Closing Doors (ft. Astrid S)","registered_at":"2026-06-11T06:18:59Z","spotify_id":"0s3HjSvDdHinLIZ7NqyEuq","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd01f8c7dac896f56f40113924e835f72608d2722a01ea91c04f57475ebe0c8c1. 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/0s3HjSvDdHinLIZ7NqyEuq.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/0s3HjSvDdHinLIZ7NqyEuq.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd1740839462a7e1a2869807d7bf2fc8a0f0b9841ff78a8dfef7ce878eb2921b. 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/1tCQq4GLWoVWcP1Ac01YCH.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/1tCQq4GLWoVWcP1Ac01YCH.
A song about I wanna see you but I probably shouldn’t
{"copyright_id":"0xaebf2b849e5d0413e80f0297d06ba9f7fdb5600036e8bffccb3f19692ad7c83a","isrc":"USQX92000403","name":"Can't Let Go (feat. Harry Hudson)","registered_at":"2026-06-04T13:51:33Z","spotify_id":"2wlJujDcmEpJ4egO6Sx56w","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaebf2b849e5d0413e80f0297d06ba9f7fdb5600036e8bffccb3f19692ad7c83a. 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/2wlJujDcmEpJ4egO6Sx56w.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/2wlJujDcmEpJ4egO6Sx56w.