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 0x0cd8d7bf3d65356348c94a3ce75bccf3e1da9aaa7dc4e211d7cc556080345331. 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/ca534870-0192-4022-9b32-aed15b9d8889.json and https://artists.proofprofile.net/proofs/artist/ca534870-0192-4022-9b32-aed15b9d8889.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0xf52e1a28b16e483c37d58e56d4d430ec31a9c67539f9eb8ac9b2e4ebe73d0cef","isrc":"GBCFB1500606","name":"Old Rock n Roll","registered_at":"2026-06-28T20:00:08Z","spotify_id":"4PHzxzo7AEqdbM64qu2tYD","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 0xf52e1a28b16e483c37d58e56d4d430ec31a9c67539f9eb8ac9b2e4ebe73d0cef. 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/4PHzxzo7AEqdbM64qu2tYD.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/4PHzxzo7AEqdbM64qu2tYD.
28 Years Later (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f6a53e8b2e0d0377109fda9cbc5c52239afd2798f4d35a03d76ce2919c5d92b. 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/0vs4k1mRSs01iOR5S5sd07.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/0vs4k1mRSs01iOR5S5sd07.
Nicotine Love - StraightFace Remix feat. Young Fathers
{"copyright_id":"0x1f31c5f63b0332d57e7327b3b337aea2ed46b1817b82ac34baaf4b8804fc5494","isrc":"DEG931400650","name":"Nicotine Love - Young Fathers Remix","registered_at":"2026-06-26T01:14:30Z","spotify_id":"1WaDp4DCM5cYaZQl1Cb67o","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f31c5f63b0332d57e7327b3b337aea2ed46b1817b82ac34baaf4b8804fc5494. 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/1WaDp4DCM5cYaZQl1Cb67o.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/1WaDp4DCM5cYaZQl1Cb67o.