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 0x77d5dbe2b38e7d0944f93e1157c894b3303686e4b06da905ea77f851af210898. 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/d2e8f9af-537e-4f57-a666-eb684f769af8.json and https://artists.proofprofile.net/proofs/artist/d2e8f9af-537e-4f57-a666-eb684f769af8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0x48bfe06da44fb84c96736b8e8a65f1d31e62562b19de5c68ddc526f9fbb152b6","isrc":"QZNWY2354710","name":"Coming Home","registered_at":"2026-06-04T16:05:23Z","spotify_id":"2NCFWvvh7aOwd2jO1kTQhy","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 0x48bfe06da44fb84c96736b8e8a65f1d31e62562b19de5c68ddc526f9fbb152b6. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2NCFWvvh7aOwd2jO1kTQhy.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/2NCFWvvh7aOwd2jO1kTQhy.
{"copyright_id":"0x1ee9526ab682cd5ca3facd69ed0933f05d53ace9d3b471bf3e8cb49c9f8d59d2","isrc":"QZWFN2306094","name":"Kiss Me Girl","registered_at":"2026-06-05T04:48:04Z","spotify_id":"1j4Y7Oy4TI1iHdnpTKzwgQ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ee9526ab682cd5ca3facd69ed0933f05d53ace9d3b471bf3e8cb49c9f8d59d2. 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/1j4Y7Oy4TI1iHdnpTKzwgQ.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/1j4Y7Oy4TI1iHdnpTKzwgQ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c92dab98d0ca624fcd02d73bd5f552274eac1d5e43d584bf5ce9408a318ecc1. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0gOjm8MIAqqnK3wWZ2x2A7.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/0gOjm8MIAqqnK3wWZ2x2A7.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x276266dbaa60b3ad769201225fa06ec00924a5ae00ff07a801fc8313ccd9441f. 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/6bSDmIJi0y2HYU6kcWfWJ6.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/6bSDmIJi0y2HYU6kcWfWJ6.
{"copyright_id":"0x9c92dab98d0ca624fcd02d73bd5f552274eac1d5e43d584bf5ce9408a318ecc1","isrc":"QZNWZ2238289","name":"Hold Me","registered_at":"2026-06-27T08:09:30Z","spotify_id":"1UJodhwInyTgpHICSskd82","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c92dab98d0ca624fcd02d73bd5f552274eac1d5e43d584bf5ce9408a318ecc1. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1UJodhwInyTgpHICSskd82.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/1UJodhwInyTgpHICSskd82.