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 0x3e2f1d60bca19b14a8dd2217f1a9135c895caa5c328f4ca9d2c23b19b9ae6caa. 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/b04f3a9c-d0e4-466f-930d-97a210d2c817.json and https://artists.proofprofile.net/proofs/artist/b04f3a9c-d0e4-466f-930d-97a210d2c817.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0x609d1fd37b192c5d66ed99ce6f4272b4ff3bbfcfbb2c55525607acbff42191f2","isrc":"MXUM62400108","name":"fusta (remix de Refugee)","registered_at":"2026-06-27T19:19:18Z","spotify_id":"5W7acLNezN0DRCKuPzQJ4J","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 0x609d1fd37b192c5d66ed99ce6f4272b4ff3bbfcfbb2c55525607acbff42191f2. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5W7acLNezN0DRCKuPzQJ4J.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/5W7acLNezN0DRCKuPzQJ4J.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd752b338401d934a19594e5aa2439aeba6844637823d59fd99be34f3035de9a3. 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/6MBEgVi4xiDcn3C7jDPSBa.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/6MBEgVi4xiDcn3C7jDPSBa.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd752b338401d934a19594e5aa2439aeba6844637823d59fd99be34f3035de9a3. 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/0cVUQGlwA53lULyA9hBZIv.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/0cVUQGlwA53lULyA9hBZIv.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd752b338401d934a19594e5aa2439aeba6844637823d59fd99be34f3035de9a3. 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/1H6vffQCZGgyOspI4WPSc7.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/1H6vffQCZGgyOspI4WPSc7.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77ecc80f3b435e124a1b71692ad619844e0c83dcb408460feaf69e87b516d876. 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/15kke2Xme4dQAM8PjgoRRS.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/15kke2Xme4dQAM8PjgoRRS.
{"copyright_id":"0xfeb5f271961ab3c740aba48c2600ddea228318763b81b27fed8fb343ca347f34","isrc":"MXH612100002","name":"Marea (feat. legallyrxx)","registered_at":"2026-06-06T01:44:42Z","spotify_id":"3ktUAegiXV0Gte7Qgs7gi3","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeb5f271961ab3c740aba48c2600ddea228318763b81b27fed8fb343ca347f34. 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/3ktUAegiXV0Gte7Qgs7gi3.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/3ktUAegiXV0Gte7Qgs7gi3.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f14852facd428e8c95b2329e57f9824e008685caa973aa64dcf0e9598ac6a34. 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/56LA9tBBl0oLEjgKJLRKpn.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/56LA9tBBl0oLEjgKJLRKpn.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc330dbe6b684e6794b62dfde1b51ac9f1134da79807690a11382e524eff67d4e. 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/2v4RtwYOiTbvtQUueyU9Bz.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/2v4RtwYOiTbvtQUueyU9Bz.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2310d0467eb1362c04e9a62ea3713942b14f8df41c4016d94ae4ec22e42f547e. 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/2cgeaGlJpUl1C37OHb28XW.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/2cgeaGlJpUl1C37OHb28XW.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2f0b9640a1c12ef7e259e1300bb92a0118a938162a7f9a4a14f0061839f8f8d. 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/6SPQL7Kz0hiXyWzaYIw3Ga.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/6SPQL7Kz0hiXyWzaYIw3Ga.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbbc33d337cd5c1f0a232146da891b86f6c5e82083b71161a86044af105721a6. 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/13BZfskMSABepXzgrp4ErP.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/13BZfskMSABepXzgrp4ErP.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3acc6b75a0ed33eda70453e903b93484582ec8a6fde7abbf38acfcc08b0b9997. 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/3HLPJXlVy6ez2lZeEpuDpB.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/3HLPJXlVy6ez2lZeEpuDpB.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dbb51294d1291b77e764c71ff85c41d1c8bafce0c1a7aa8e608118c72a5981a. 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/1nteqo0b0cPmHVqVqaAFVg.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/1nteqo0b0cPmHVqVqaAFVg.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe370ea408476e851ac6c427f2c32fa08f32c516e71fc50803a1492f80f410e15. 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/6KeTIFdn8p5pPHzkv9v1F8.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/6KeTIFdn8p5pPHzkv9v1F8.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x830367b80f87dbdf0cdc871ab54dc9f105f0ccc522ce48c99839cbd7abf4b856. 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/0ZuxI7n2hlyyG6qAZ08C4H.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/0ZuxI7n2hlyyG6qAZ08C4H.
{"copyright_id":"0x032d6f7400b0df32da971ee92b9a5acad0cf5f610f08d9e9e1ebc7ecf24ecc88","isrc":"QM24S2202802","name":"Relajao (Remix)","registered_at":"2026-06-08T06:43:44Z","spotify_id":"55TiEVu9ycpq4tuA51MIoa","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x032d6f7400b0df32da971ee92b9a5acad0cf5f610f08d9e9e1ebc7ecf24ecc88. 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/55TiEVu9ycpq4tuA51MIoa.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/55TiEVu9ycpq4tuA51MIoa.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3314f874f787f9c80b55c3059db11973feb9493c30e622a89998e1292cee0ec. 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/5aWJELvJIp6rPs7wnTzaJh.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/5aWJELvJIp6rPs7wnTzaJh.