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 0x2fc83eefa207a586a729fba2dc76283bb0dc73d03933c998aa1477b54ec1bc22. 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/2a42d9d5-eeed-435d-8be4-2431ac98091f.json and https://artists.proofprofile.net/proofs/artist/2a42d9d5-eeed-435d-8be4-2431ac98091f.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 0x60404ebbb5ac94d9fd811251eb3c30daf183b9ae909e7ba59ebb78ab0191338d. 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/3NzXGMaJ9mZ0HdWhYZg5Ul.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/3NzXGMaJ9mZ0HdWhYZg5Ul.
{"copyright_id":"0x489e0532909bf2d3ea6d80d941c54842edcfd11e0ad8e9b0e29eee537fc74db7","isrc":"QZ2L62300126","name":"Queen Of The Barrio","registered_at":"2026-06-10T22:31:33Z","spotify_id":"7LnwQw7TQUtKXrDB0LMlXD","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x489e0532909bf2d3ea6d80d941c54842edcfd11e0ad8e9b0e29eee537fc74db7. 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/7LnwQw7TQUtKXrDB0LMlXD.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/7LnwQw7TQUtKXrDB0LMlXD.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d07f92539aadd0ab47f08249b06b6465784785f01fda5fc56d08dd3fbda6699. 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/3Re3ZpshaFvCAIvdLgy0SA.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/3Re3ZpshaFvCAIvdLgy0SA.
{"copyright_id":"0x489e0532909bf2d3ea6d80d941c54842edcfd11e0ad8e9b0e29eee537fc74db7","isrc":"QZ2L62300126","name":"Queen Of The Barrio","registered_at":"2026-06-10T22:31:33Z","spotify_id":"7eG8DozFgr63FihAybJ9Bc","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x489e0532909bf2d3ea6d80d941c54842edcfd11e0ad8e9b0e29eee537fc74db7. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7eG8DozFgr63FihAybJ9Bc.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/7eG8DozFgr63FihAybJ9Bc.
Big Crown Records presents Crown Jewels Vol. 3
Big Crown Records presents Crown Jewels Vol. 2
Big Crown Records presents Crown Jewels Vol. 1
Big Crown Records presents Demoitis Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe619878e239be85e15524907a0a5e258f4e7122e70260e986aa9a640b7598bd0. 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/5RZ8LoDRI0LQwxiMLhSZFe.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/5RZ8LoDRI0LQwxiMLhSZFe.