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 0x294a0ebb259c13865d8780f8de54427f71626b267ed63d83dac3826a5d8705c7. 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/ff411fa7-fc26-4794-9e9a-17d1ebf60add.json and https://artists.proofprofile.net/proofs/artist/ff411fa7-fc26-4794-9e9a-17d1ebf60add.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 0x4e94ec4826f059a8a8d6b286f2df28a28a3950c9a062ff1700404f5e979378ae. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4qzxy3m6mGoeIecvMQylg3.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/4qzxy3m6mGoeIecvMQylg3.
{"copyright_id":"0x074ce4bb273bfd907ce07d0a054b6bb3320fecb8351394acaea6faf588ac7790","isrc":"US7DK1400518","name":"Pick A Side","registered_at":"2026-06-20T07:07:31Z","spotify_id":"4tpFkpFnq6lWfPwlswNfyi","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x074ce4bb273bfd907ce07d0a054b6bb3320fecb8351394acaea6faf588ac7790. 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/4tpFkpFnq6lWfPwlswNfyi.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/4tpFkpFnq6lWfPwlswNfyi.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49163233d798fc3c4f668a8fd3e8c63bbc4726c799ef0821956f63f957fe3035. 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/34ia1kcBG9dJm6peX8pfaw.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/34ia1kcBG9dJm6peX8pfaw.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8236a94b25c79339ee902a679b5a210c3e7a01af68aaa7a8983ea5516cb1dc28. 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/5ezQguk9nxfMueXvlBCGJl.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/5ezQguk9nxfMueXvlBCGJl.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x974b0e1fcf6c81aa5522a66ddf9a79f4d50cae7ff6897d10d28ffc181314b42f. 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/1KKtwVgaA26RjcJRLu73P3.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/1KKtwVgaA26RjcJRLu73P3.