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 0xd6c421b7c5a9dde609cf6331347953d5a8f6f956d686ce0578a7376f0853edfd. 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/b5aa3fbf-b481-48cb-856f-d69108089604.json and https://artists.proofprofile.net/proofs/artist/b5aa3fbf-b481-48cb-856f-d69108089604.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0x1aaa5d65c58bb251f2bed2738b80df1dafa2f02438e0c0b7dce87a3a5d816ffa","isrc":"USLD91702021","name":"Loosen Up (feat. Malachiae)","registered_at":"2026-06-22T00:11:38Z","spotify_id":"6gnVTyUea0r6bk6qf8QWyY","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 0x1aaa5d65c58bb251f2bed2738b80df1dafa2f02438e0c0b7dce87a3a5d816ffa. 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/6gnVTyUea0r6bk6qf8QWyY.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/6gnVTyUea0r6bk6qf8QWyY.
You (Remix) [Prod XL Eagle] (feat. Malachiae & Keanu)
{"copyright_id":"0x5f7249809ffdadf6b20d2f91a4e700a36b433c96819b3b170a84930d0cd4a63c","isrc":"TCACF1568292","name":"You (Remix) [Prod XL Eagle] (feat. Malachiae & Keanu)","registered_at":"2026-06-25T11:32:27Z","spotify_id":"1mBNn0gxet6cRlR8MZ9D7E","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f7249809ffdadf6b20d2f91a4e700a36b433c96819b3b170a84930d0cd4a63c. 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/1mBNn0gxet6cRlR8MZ9D7E.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/1mBNn0gxet6cRlR8MZ9D7E.