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 0xb155b4e200d320fb7406869c17e5daf82afc63882538083ff43a322cdf6cdaa3. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a44edbfc-f7c1-4200-bf21-4eeb15b7da8e.json and https://artists.proofprofile.net/proofs/artist/a44edbfc-f7c1-4200-bf21-4eeb15b7da8e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0x4e412c8a9c046c6fb9268cfb1b2f9efffa2506497b68c49e30275490ad69b5a1","isrc":"QZHN72425975","name":"Spirited Ascent","registered_at":"2026-06-07T13:06:06Z","spotify_id":"3uznFSE0DWRmmcyggv2XSj","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 0x4e412c8a9c046c6fb9268cfb1b2f9efffa2506497b68c49e30275490ad69b5a1. 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/3uznFSE0DWRmmcyggv2XSj.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/3uznFSE0DWRmmcyggv2XSj.
{"copyright_id":"0x06835201d8692df9ae017fab2261ab34aa368f42a1ed6ddbe0e7bf9845ee5b5e","isrc":"QZHN72425976","name":"Spirited Ascent - Solo Version","registered_at":"2026-06-21T22:24:42Z","spotify_id":"1LOKR8zrl95Fzd6GQ0chSp","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06835201d8692df9ae017fab2261ab34aa368f42a1ed6ddbe0e7bf9845ee5b5e. 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/1LOKR8zrl95Fzd6GQ0chSp.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/1LOKR8zrl95Fzd6GQ0chSp.
{"copyright_id":"0x8b02dbbd75afc90fb7182fa6202c475daa5b5e39f4320afcd79f432b0da3f653","isrc":"QZTBD2439234","name":"Forest Light","registered_at":"2026-06-29T09:41:10Z","spotify_id":"5xH5XHcLPoq22ndporNAxB","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b02dbbd75afc90fb7182fa6202c475daa5b5e39f4320afcd79f432b0da3f653. 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/5xH5XHcLPoq22ndporNAxB.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/5xH5XHcLPoq22ndporNAxB.
{"copyright_id":"0x2f7abee6aa8411469c9fb4b9101bcc061df2f4a28eff2007e91a1a8d00781c45","isrc":"QZTBD2442447","name":"Coastal Harmony","registered_at":"2026-06-29T09:42:46Z","spotify_id":"5Nxc1MefrtYNu9HKvaenhh","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f7abee6aa8411469c9fb4b9101bcc061df2f4a28eff2007e91a1a8d00781c45. 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/5Nxc1MefrtYNu9HKvaenhh.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/5Nxc1MefrtYNu9HKvaenhh.