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 0xadd81b0602dea5f4ef63b20e96d174c4de1517f4a65a4c1e3dd0fdb003cf977f. 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/d76c0572-d44a-4b7c-9759-b7d5c9e646e4.json and https://artists.proofprofile.net/proofs/artist/d76c0572-d44a-4b7c-9759-b7d5c9e646e4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0xe22e3c60c0ac9cd58983b27c7081aba9f6e2642affb5b4becc6940be88589fbe","isrc":"QZPEW2413906","name":"Hear No Curse","registered_at":"2026-06-26T01:04:37Z","spotify_id":"4fyyLsuG3VWtPYdq1I2Gvj","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 0xe22e3c60c0ac9cd58983b27c7081aba9f6e2642affb5b4becc6940be88589fbe. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4fyyLsuG3VWtPYdq1I2Gvj.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/4fyyLsuG3VWtPYdq1I2Gvj.
{"copyright_id":"0xe22e3c60c0ac9cd58983b27c7081aba9f6e2642affb5b4becc6940be88589fbe","isrc":"QZPEW2413906","name":"Hear No Curse","registered_at":"2026-06-26T01:04:37Z","spotify_id":"6ZcIEDUBU8fksZuOwDSrUb","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe22e3c60c0ac9cd58983b27c7081aba9f6e2642affb5b4becc6940be88589fbe. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6ZcIEDUBU8fksZuOwDSrUb.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/6ZcIEDUBU8fksZuOwDSrUb.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd33ae146c64a0e11b271f17991de5aad62d780dff6a699df1c65a1d73c34894. 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/6triILxLlKCwyugCs2vpUK.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/6triILxLlKCwyugCs2vpUK.