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 0x7776d8328441e6097633fccfa8439e649420755b338f9b291a814a12a4a641fc. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/759d43b4-4e88-4f60-b215-c38497b2adb7.json and https://artists.proofprofile.net/proofs/artist/759d43b4-4e88-4f60-b215-c38497b2adb7.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 0x86549b03827a9fea6a4877f4b7f27852d2f557df80003bd7db35d8fd14d2baba. 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/0mZIRxmun8Lg6Ec9NpPAmm.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/0mZIRxmun8Lg6Ec9NpPAmm.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf590001d7cd3a4e297fa5ce4cfdc961a9114a740d193280e07dad3a749dc409e. 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/07Po12dckPgyzjaB0ImH1w.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/07Po12dckPgyzjaB0ImH1w.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc184fe5da52eb45151cf9f9dfb5e8490db02c24486229c091d451a005b17b54b. 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/1GyBWqw3ceytkQ66yR0ORL.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/1GyBWqw3ceytkQ66yR0ORL.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d36b2628e1e20ac5f79e5a1ff91b5964fdc0407b9f6e42f59659c45c47f3471. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/61qJ4hUpEMshk1afsLmAEE.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/61qJ4hUpEMshk1afsLmAEE.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0b814a1bea3c6ea6b160e633e0cef7d0ae18373613127f6922264001ef189a0. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/63xacFFxlsNSEwVOfl7sYh.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/63xacFFxlsNSEwVOfl7sYh.
{"copyright_id":"0xbc23986814cceba4a79d927afcf57c8e86f18b35f3e49855d1ddca019562e726","isrc":"GBCQV1600297","name":"Fend for Yourself","registered_at":"2026-06-06T07:07:36Z","spotify_id":"0NIE90xV9r4jQRQ9bLZVhQ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc23986814cceba4a79d927afcf57c8e86f18b35f3e49855d1ddca019562e726. 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/0NIE90xV9r4jQRQ9bLZVhQ.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/0NIE90xV9r4jQRQ9bLZVhQ.
{"copyright_id":"0x4169dc62bcf74e647245138fc4f4a86ad2a2bd46e465c83da05ae8ad98c32010","isrc":"GBCQV1600298","name":"The Final Thing on My Mind","registered_at":"2026-06-04T14:05:55Z","spotify_id":"4m3M6l513rITHvn9LaKJeA","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4169dc62bcf74e647245138fc4f4a86ad2a2bd46e465c83da05ae8ad98c32010. 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/4m3M6l513rITHvn9LaKJeA.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/4m3M6l513rITHvn9LaKJeA.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7405569780e2a66822b5e69f28a9b6c5ad5963cfd613b3f10949c56b08618708. 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/17prKBKAEYNc8eVEqhsiMY.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/17prKBKAEYNc8eVEqhsiMY.