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 0x73a1ef74b01e9d58fe34704112cf08e7c7f1c33144781ada06ab700df32806b6. 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/659436d0-5199-4f46-9aaf-baa9be3d67e9.json and https://artists.proofprofile.net/proofs/artist/659436d0-5199-4f46-9aaf-baa9be3d67e9.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 0x46802d43c37180c92eb16f0cfcb378b1141aaae7b177ed609a7f960af4574f39. 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/43LpSftAeYXXG27MlWWqqA.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/43LpSftAeYXXG27MlWWqqA.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66c1d67c5f36168e1db45f9b364b32e6d01f66297306715cb79dc5b9cb85f54f. 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/3ZWzzq2xddK0Yx4iVEw3NK.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/3ZWzzq2xddK0Yx4iVEw3NK.
{"copyright_id":"0xf92b12e9ac2ee6bd273d3dd28600a8f8eec41837bd288d77fc6999e3c9abefdc","isrc":"RUAEX2220371","name":"No Question","registered_at":"2026-06-06T21:19:31Z","spotify_id":"6w9MaVz7UoiLZgjIHZAOyL","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf92b12e9ac2ee6bd273d3dd28600a8f8eec41837bd288d77fc6999e3c9abefdc. 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/6w9MaVz7UoiLZgjIHZAOyL.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/6w9MaVz7UoiLZgjIHZAOyL.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddcbc368c0f41a2e6da3fa7065df30c91f5c2117833807df7ef8a4445d875a32. 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/64nc7s35F9D4gcxnVPtIY5.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/64nc7s35F9D4gcxnVPtIY5.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ebed73b55e917a8532dcaca4f992347b452bf36804e0fe7250b1f01107a3da5. 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/5piTGrZ2QswhNqJBhdK3hC.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/5piTGrZ2QswhNqJBhdK3hC.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x576618f17658b52a9d29f1bdfde09f76778bbedc110196668b6be97551f9077d. 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/1cyv7TaelTzQTX76tfzlJT.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/1cyv7TaelTzQTX76tfzlJT.
{"copyright_id":"0xd0fceecd37c0c9a4b4e4e059c3f374a065def43584c9590bf99b2988c61c8108","isrc":"RUAEX2221101","name":"What U Said","registered_at":"2026-06-08T08:50:34Z","spotify_id":"0zJiIfo2lRP8hmLKh1kmmw","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0fceecd37c0c9a4b4e4e059c3f374a065def43584c9590bf99b2988c61c8108. 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/0zJiIfo2lRP8hmLKh1kmmw.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/0zJiIfo2lRP8hmLKh1kmmw.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c5a81c0137403e8940c5dfa1c43f8de71120cab8cee2e9f1da5f1e098fe8607. 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/6Ei5QoQFz2HiH0xG8xnnCu.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/6Ei5QoQFz2HiH0xG8xnnCu.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x796af9fa92b1e5fa8f01da5080a8374290a353bd6fe497e68f60fdb5c68567ac. 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/1YoWbth8SVi11utMk2w72l.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/1YoWbth8SVi11utMk2w72l.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabfe39bbae87999db009e72fda81520f53964fdf9407def891f9174fea0a4c86. 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/04jwLcZlZADQEM91Su5Ydo.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/04jwLcZlZADQEM91Su5Ydo.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63e758936d82963be3f2c754ab5b5f87cab6622ae047ee870f7b5a938a41c0e1. 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/0w5pqlZb4Nj2aSzX87L5nO.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/0w5pqlZb4Nj2aSzX87L5nO.
{"copyright_id":"0x3d6cac3ec03ae6b58221e586861ffeebd52b0b14d4e932053cba4a2cd2f5d8aa","isrc":"RUAEX2222164","name":"Crashed Tha Jet","registered_at":"2026-06-07T04:49:27Z","spotify_id":"3eCgjZ6lwNQ2nds4FYiihk","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d6cac3ec03ae6b58221e586861ffeebd52b0b14d4e932053cba4a2cd2f5d8aa. 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/3eCgjZ6lwNQ2nds4FYiihk.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/3eCgjZ6lwNQ2nds4FYiihk.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b7e5047414b7c02698a917ff01c208597aad06444f70d865c91205c8d003cac. 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/0IhOd4cOWKf8RWTwmlmQ6d.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/0IhOd4cOWKf8RWTwmlmQ6d.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd99b500999b429d5b82f97f19a8ff93fdaebba184621a2828a74d21a62606fb1. 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/0uJyAxSwkfcR2EsiUgEAvh.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/0uJyAxSwkfcR2EsiUgEAvh.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72ce28abc99715ff949b174438d8c53657775fdb8564ee865facc0012eedb3b6. 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/0h4G4DRt4q5UhBNgs4k5oa.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/0h4G4DRt4q5UhBNgs4k5oa.