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 0xa5a7440c2e90183ba49b68d9f4b615350ebf927b5fd2b5dfaabadd1b7fd9056b. 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/e72f9699-2e0c-4fa1-aa24-684ae22daa72.json and https://artists.proofprofile.net/proofs/artist/e72f9699-2e0c-4fa1-aa24-684ae22daa72.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0xa669b8c48482890b0d84d542de117dfa7b065a3ed8ed1b19eff76140aee3e184","isrc":"QZTBB2330922","name":"Niet Voor Spiet","registered_at":"2026-06-26T04:26:02Z","spotify_id":"4V7DhXQL0QGiQ1wMQ0axNc","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 0xa669b8c48482890b0d84d542de117dfa7b065a3ed8ed1b19eff76140aee3e184. 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/4V7DhXQL0QGiQ1wMQ0axNc.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/4V7DhXQL0QGiQ1wMQ0axNc.
{"copyright_id":"0x35daaa41abb96739b792ca368dcc65ef898c2b10e1d76ba32afcb7965de89364","isrc":"BEB682400252","name":"FLEXANIMA GENERANTIS","registered_at":"2026-06-07T16:25:44Z","spotify_id":"7CMzUQdC0pV1jNEv458ogi","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35daaa41abb96739b792ca368dcc65ef898c2b10e1d76ba32afcb7965de89364. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7CMzUQdC0pV1jNEv458ogi.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/7CMzUQdC0pV1jNEv458ogi.
{"copyright_id":"0x2a10f7a5bdcbe71d7a5900d5a6b5a695ffd5ab2bf6ca6bc7f8dc49409d96f8ce","isrc":"QZK6K2440227","name":"THE END","registered_at":"2026-06-19T19:11:15Z","spotify_id":"5oY0IweXgNzPYj8LO7QNN1","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a10f7a5bdcbe71d7a5900d5a6b5a695ffd5ab2bf6ca6bc7f8dc49409d96f8ce. 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/5oY0IweXgNzPYj8LO7QNN1.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/5oY0IweXgNzPYj8LO7QNN1.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d0bbc2f2bbc216338a2db9f020202943e49e6bff49c79730880a83a4b2387f7. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6fh8hNRXOy8IsbogbyYBFf.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/6fh8hNRXOy8IsbogbyYBFf.