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 0x95db24dfc1c1db73f2456ab167850b2abdeb13c8ec8b512be7e627a50f7f0443. 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/88cb8973-bee9-4f60-a43b-c2cc3e937e6c.json and https://artists.proofprofile.net/proofs/artist/88cb8973-bee9-4f60-a43b-c2cc3e937e6c.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 0x5f1df17ed47f432e4d05e50bec0014237db339b7b8cd93b3de435db00f5f5cc3. 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/764Bpz4lGP4jJyr5kGl00t.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/764Bpz4lGP4jJyr5kGl00t.
{"copyright_id":"0xbaa808793031eeeb6d1f8abf050deddff6faa9890279bcf3335e070b03bcf9f0","isrc":"DEUM72312633","name":"ECHT - Techno Mix","registered_at":"2026-06-01T22:20:07Z","spotify_id":"5C9Wj828MGrSjEgjXr8DlM","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaa808793031eeeb6d1f8abf050deddff6faa9890279bcf3335e070b03bcf9f0. 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/5C9Wj828MGrSjEgjXr8DlM.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/5C9Wj828MGrSjEgjXr8DlM.
{"copyright_id":"0x46182fd346fd4fb95ae26faf7ae5d249ab8537a5e2ed526ee7db3520ff6cf4e0","isrc":"SE6QE2358094","name":"Meet Again","registered_at":"2026-06-05T16:59:15Z","spotify_id":"4YgTTzcixZv8jF8jL71YwO","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46182fd346fd4fb95ae26faf7ae5d249ab8537a5e2ed526ee7db3520ff6cf4e0. 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/4YgTTzcixZv8jF8jL71YwO.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/4YgTTzcixZv8jF8jL71YwO.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18750e6904bcc81968f70e770208dd0eed6cb7964f036c0f5ac564d5c96d1f16. 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/59PBlJjSjnoCIRwJ6WOP75.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/59PBlJjSjnoCIRwJ6WOP75.
{"copyright_id":"0x1ef72bf25ce04bf2a02e9d72a362e85b8e0fffcf60a13513da6d2c21ebaa5be3","isrc":"QZTAW2380684","name":"Zombie (Techno)","registered_at":"2026-06-04T09:48:45Z","spotify_id":"3HMEM43hSlIIRTYLVyPDoq","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ef72bf25ce04bf2a02e9d72a362e85b8e0fffcf60a13513da6d2c21ebaa5be3. 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/3HMEM43hSlIIRTYLVyPDoq.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/3HMEM43hSlIIRTYLVyPDoq.
{"copyright_id":"0x1ef72bf25ce04bf2a02e9d72a362e85b8e0fffcf60a13513da6d2c21ebaa5be3","isrc":"QZTAW2380684","name":"Zombie - Techno","registered_at":"2026-06-04T09:48:45Z","spotify_id":"1Dbt4LlxqH0iCxIb3KDRe3","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ef72bf25ce04bf2a02e9d72a362e85b8e0fffcf60a13513da6d2c21ebaa5be3. 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/1Dbt4LlxqH0iCxIb3KDRe3.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/1Dbt4LlxqH0iCxIb3KDRe3.
{"copyright_id":"0xbaa808793031eeeb6d1f8abf050deddff6faa9890279bcf3335e070b03bcf9f0","isrc":"DEUM72312633","name":"ECHT - Techno Mix","registered_at":"2026-06-01T22:20:08Z","spotify_id":"3zvnqac9doHz3NlmO5DGoV","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaa808793031eeeb6d1f8abf050deddff6faa9890279bcf3335e070b03bcf9f0. 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/3zvnqac9doHz3NlmO5DGoV.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/3zvnqac9doHz3NlmO5DGoV.
{"copyright_id":"0xbaa808793031eeeb6d1f8abf050deddff6faa9890279bcf3335e070b03bcf9f0","isrc":"DEUM72312633","name":"ECHT - Techno Mix","registered_at":"2026-06-01T22:20:07Z","spotify_id":"0Y1e1Ng5pNd9VFImKNP1lS","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaa808793031eeeb6d1f8abf050deddff6faa9890279bcf3335e070b03bcf9f0. 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/0Y1e1Ng5pNd9VFImKNP1lS.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/0Y1e1Ng5pNd9VFImKNP1lS.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd73b0e439e534024d598b7d8e9eda2150ebf559ba5ee1c43779831b25bcc75bb. 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/2gBYfY2B65RIe1xJQ81SBG.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/2gBYfY2B65RIe1xJQ81SBG.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8361ce87c6e958e350f9121514a8d1c5878e1caeaa3d0c3ea7cf065804faf437. 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/6dsP5r3EvfFpYg4JZMsSsY.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/6dsP5r3EvfFpYg4JZMsSsY.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad2f3126e4ce0a8c3b6c9cd2d3823229e36d86e255234e98110ad47957e35471. 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/6ZSau7mcuk3FPvx7gBtt2b.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/6ZSau7mcuk3FPvx7gBtt2b.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x226ea90f6f27fb148fd9787a3a1986d3823f2096e612a51420edbbcbb18e8091. 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/76lFA3hj7CalUiyp3xLgEu.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/76lFA3hj7CalUiyp3xLgEu.
{"copyright_id":"0x8ba7c0224be18b38d01eb89b88a58d1b43dc842e013ad765af1ddd89000d04fd","isrc":"DGA062483241","name":"Du bist schön - Remix","registered_at":"2026-06-04T14:33:52Z","spotify_id":"0eXmSPCc7x9rgiWAo7bXme","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ba7c0224be18b38d01eb89b88a58d1b43dc842e013ad765af1ddd89000d04fd. 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/0eXmSPCc7x9rgiWAo7bXme.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/0eXmSPCc7x9rgiWAo7bXme.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x226ea90f6f27fb148fd9787a3a1986d3823f2096e612a51420edbbcbb18e8091. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2SAkzQL2tjbai2RO22pdKE.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/2SAkzQL2tjbai2RO22pdKE.