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 0xcfc2c059dad0f33752c03b792b41ccb3c8e0a09918b9427919749c818a4b6c1f. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/526dfcb3-3161-430e-9ed1-10af5afc1371.json and https://artists.proofprofile.net/proofs/artist/526dfcb3-3161-430e-9ed1-10af5afc1371.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 0x40c3a9bd08a4e284201978079110cc9a932dd50b8a769633ff2b0f409d14c928. 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/0R1kJEiZgP7M8YagRayOTm.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/0R1kJEiZgP7M8YagRayOTm.
{"copyright_id":"0x850ed0f16c20cd31e2859f451790fa90bed6601b9d1e1be2c5d9beb1b6e024b1","isrc":"US7VG2488055","name":"Convos with the Dead","registered_at":"2026-06-10T20:32:29Z","spotify_id":"6HjOnFtuHx7VBEJ67ZUBF1","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x850ed0f16c20cd31e2859f451790fa90bed6601b9d1e1be2c5d9beb1b6e024b1. 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/6HjOnFtuHx7VBEJ67ZUBF1.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/6HjOnFtuHx7VBEJ67ZUBF1.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0e0db43007158fb15bf2486ad2c6dc53493d7be785c157e4150d751860754cb. 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/69wcPFLnSaN1x0KiUmiAXX.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/69wcPFLnSaN1x0KiUmiAXX.