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 0x3b6b57bc683436711583d4b400412b9209f27f36daa34dd697ce9cf9533b4e7d. 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/fb0cab4a-b9c6-4b7d-9680-e226aaa9ee92.json and https://artists.proofprofile.net/proofs/artist/fb0cab4a-b9c6-4b7d-9680-e226aaa9ee92.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 0x68718a09b934cb16fa3c098c7bdc1cb0ebe59ea3bb336ebae9fa072724a4cb08. 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/3Sh0Kjvlbod1YKdUnAtL2l.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/3Sh0Kjvlbod1YKdUnAtL2l.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabeb38d712a2537e90fcbf770da29f91a0155c04acca2175ba6cf51b429d4a73. 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/67O3qnJP8L3BbSuZ7mUYOK.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/67O3qnJP8L3BbSuZ7mUYOK.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x020cc32c9450c292736869855838194c2b6c87cb6562f6d48a1fc591138c3d75. 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/56Qvqjk0NfNpiXMUoWUcp4.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/56Qvqjk0NfNpiXMUoWUcp4.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5295bc361a5efa9d366cc9c7968e0485772a1d58c008d5218b995b39423a213. 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/4A3R99wrRI6LgtB4Fp9LiI.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/4A3R99wrRI6LgtB4Fp9LiI.
{"copyright_id":"0x3fd5ac7fcd7b21bb54d5430ceabea4ecf249f035d26e9d00e93e5eabcb000dd3","isrc":"QZH6S1900340","name":"Finally Home","registered_at":"2026-06-10T03:24:21Z","spotify_id":"6nRxx2C8G12eMhPLAofIPa","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fd5ac7fcd7b21bb54d5430ceabea4ecf249f035d26e9d00e93e5eabcb000dd3. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6nRxx2C8G12eMhPLAofIPa.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/6nRxx2C8G12eMhPLAofIPa.