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 0x1484233035351a41223ee3be43159ce2b7c9b78ac18818c12301783bc6e0f514. 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/b734157f-76b9-4539-8233-ffaaad4e9994.json and https://artists.proofprofile.net/proofs/artist/b734157f-76b9-4539-8233-ffaaad4e9994.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 0x9a37a8477deba737d2a6dd2215ce0bdad9e1c13bcb91719492ccdc28bf431695. 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/1mUPcRmSmi2XsKAOWFKAF1.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/1mUPcRmSmi2XsKAOWFKAF1.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2135dfc9e674490451bb74a253edc2a7a336deceb569a10269f0772fde03884. 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/77GCNhaHtflkuq1bLaU2Oy.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/77GCNhaHtflkuq1bLaU2Oy.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4175795d307ab7f832aeb10036789052b7d349a8af95c4800f2c57d6f49ad823. 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/501siVAYF3S4zfFMhqWPWZ.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/501siVAYF3S4zfFMhqWPWZ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e005300a36552292f158b64f680d962bf0f36af82f44042bd60b84493d07100. 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/6mux87jfe58JwABrf4N8nw.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/6mux87jfe58JwABrf4N8nw.
{"copyright_id":"0xb49872fae7d56b361b402934bfa20f28ea7fbbd12799530c85d1d847b8fc8a95","isrc":"US7VG1676557","name":"Gaita Del Profesor Loco","registered_at":"2026-06-11T04:28:28Z","spotify_id":"7JAIqLWiZ3mu6N6U65TEVK","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb49872fae7d56b361b402934bfa20f28ea7fbbd12799530c85d1d847b8fc8a95. 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/7JAIqLWiZ3mu6N6U65TEVK.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/7JAIqLWiZ3mu6N6U65TEVK.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeb4fbc40d3eb8db8c09fc42ed77bc7a63e1c2deb19b2b999c790485996933a6. 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/4LIdFQO5kSKc8eD8MCLsH6.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/4LIdFQO5kSKc8eD8MCLsH6.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ffa391ceb7267e7ad2670a4f5c61e32a266ef81ad1d850481f41258f3020afc. 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/7M2v1tUkiIImCbrykptj9C.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/7M2v1tUkiIImCbrykptj9C.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b0b9d3d970937a980c694d8508e8a8d4a96639ec1530ca6561a218c4e48b8aa. 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/4be1LkMArUHje3vgnhbtT9.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/4be1LkMArUHje3vgnhbtT9.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x990bc12990e2217cafed1cf957171bd209172fb02f3bae1071fc542a15d4f544. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2xmsYh2xRCQiesUB795nBW.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/2xmsYh2xRCQiesUB795nBW.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc44159f5eb096736f4b9ba9e0ce87312e45b57df75066ce57e9c0a03d8b48bf3. 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/75NQMjYPx5DNku50N2m75h.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/75NQMjYPx5DNku50N2m75h.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1abafda429d71443d631d9d3d54e1373404be314613c70e0a9df4f8a618859c2. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4YCpEzUJ9E4tLllcG5Lo7u.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/4YCpEzUJ9E4tLllcG5Lo7u.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42ab0bf959c946058ab6634a38526be5d8aa26d22711a047ad025789af0c19ab. 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/5MbsoQ4slsfmqIpvQ2yrxL.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/5MbsoQ4slsfmqIpvQ2yrxL.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31a78ce9e86f7fd28227625f8f209642e9d2b806c344d99d387c9bde94dc9535. 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/39YAo7nYIuzJYujWb2eruH.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/39YAo7nYIuzJYujWb2eruH.
{"copyright_id":"0x3da3790c3e68a70eaedd8ed9950e32e131139e6e13bbee7db2e42b0957dd985f","isrc":"US7VG1676566","name":"Ariwacumbé Shaunvox - Dub","registered_at":"2026-06-22T00:57:55Z","spotify_id":"4fsrd6ktWR3P2wNnOElHyo","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3da3790c3e68a70eaedd8ed9950e32e131139e6e13bbee7db2e42b0957dd985f. 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/4fsrd6ktWR3P2wNnOElHyo.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/4fsrd6ktWR3P2wNnOElHyo.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3886e5a2191869afe8fc2d858b7c4923b062396449975d9c57b731c446eccf02. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3dlzX64nyWQnv5fFRtJe5z.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/3dlzX64nyWQnv5fFRtJe5z.
You'll Never Find Another Love Like Mine - Mad Professor Dub
Late Night Tales Presents Version Excursion Selected by Don Letts
{"copyright_id":"0xfe2eb111ea1544d04e69765ea76c0da778fd55686cc6669fd63ee96b8420fb81","isrc":"GB5KW2101715","name":"You'll Never Find Another Love Like Mine - Mad Professor Dub","registered_at":"2026-06-23T03:41:06Z","spotify_id":"0rpG5UUW7EfDczWkWRrzT6","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe2eb111ea1544d04e69765ea76c0da778fd55686cc6669fd63ee96b8420fb81. 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/0rpG5UUW7EfDczWkWRrzT6.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/0rpG5UUW7EfDczWkWRrzT6.
In The Red Zone: The Essential Collection of Classic Dub