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 0x46d554fdf7d5216f0ab49cd3388b1a479725ee253b56ddbe9ebfe317b5a09ae9. 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/7141bbb0-087b-48c7-a160-4f3a7ce1b73f.json and https://artists.proofprofile.net/proofs/artist/7141bbb0-087b-48c7-a160-4f3a7ce1b73f.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 0xf6961a349db12bb679a111775b40c095f455fa08f1cb9fab5a88dfaf45560ccc. 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/0WMECKcDSIbBkJL9cPN9J7.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/0WMECKcDSIbBkJL9cPN9J7.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd156a927ce86f615f4057e2184c04eb3d0b769e9d66bfa4a292eb0414f1210a5. 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/00azLfkE09LWruBk4jGnan.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/00azLfkE09LWruBk4jGnan.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57e749aa1ed03e19752e25faa7a51dba0bf829008d6d58834e9812c99dfe0dc0. 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/2703OV5AHhK720U4UGtvAj.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/2703OV5AHhK720U4UGtvAj.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x440435744db5d4948eb2345fff7fbe20cc1866e8d706699a036cee869aa4edb8. 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/0teacQmUZdVr5McxgeSVxp.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/0teacQmUZdVr5McxgeSVxp.
{"copyright_id":"0xa4a67acf7d7c21e67929b785687f2a202cadaeec8a0309d1a515ca59f12c50aa","isrc":"USA2P2400716","name":"Throw Some D's","registered_at":"2026-06-28T19:16:57Z","spotify_id":"2wPPhECanf6OJmAzAN4sOC","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4a67acf7d7c21e67929b785687f2a202cadaeec8a0309d1a515ca59f12c50aa. 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/2wPPhECanf6OJmAzAN4sOC.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/2wPPhECanf6OJmAzAN4sOC.