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 0x457399c8fd260be9532aa080519eb38378a580741429e1b3c38cc4ee5b89d036. 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/bb676887-a2fc-455c-90ea-e5b3e990d9d2.json and https://artists.proofprofile.net/proofs/artist/bb676887-a2fc-455c-90ea-e5b3e990d9d2.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 0xabed5ff372f0b97dc3ed600c2927c71724eedb192e428231d16737134ca54a88. 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/5JkbyYRxPW7Wg1evBIVDmK.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/5JkbyYRxPW7Wg1evBIVDmK.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a88dc1f52af0945beb52edbdab8ab3f006870d8d478da84559dacb1ec405493. 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/2eGREK0WjMkZwTJub3Q1YU.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/2eGREK0WjMkZwTJub3Q1YU.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6fa8d8af0656e169056cce9751b5d00969a472ed5f929ecb487396edbf56dde. 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/7a10uCHf3hiUDVOjceG1V8.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/7a10uCHf3hiUDVOjceG1V8.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x373b0f9426449285381283cebee7f9bb7865c70ea91f2e2f832f402f71175501. 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/79gH6NXAWGhmuHKi1grjVw.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/79gH6NXAWGhmuHKi1grjVw.
{"copyright_id":"0xa614d902e34b597c0680855def403fc234ae383d1c8ace833eae1911f4f92b6f","isrc":"USEE19901173","name":"Worth His Weight in Gold","registered_at":"2026-06-05T14:50:36Z","spotify_id":"2TyJz8hsPnYKZlPgfh6zsl","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa614d902e34b597c0680855def403fc234ae383d1c8ace833eae1911f4f92b6f. 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/2TyJz8hsPnYKZlPgfh6zsl.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/2TyJz8hsPnYKZlPgfh6zsl.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0ba8ca1364ae32ec3dff6e498af72a0a535bcc5d9a552282f48d507855ee28f. 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/5WrR7WvDf3Z7TFvOD34qgz.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/5WrR7WvDf3Z7TFvOD34qgz.
{"copyright_id":"0x43bcf16cb19ab26e4bdb3908f2d2b067b3e4a77b0351e2062d2901e8dad0e504","isrc":"USEE19901176","name":"Blues Dance Raid","registered_at":"2026-06-05T14:50:22Z","spotify_id":"4elJh9DUanyNsU3NALI19N","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43bcf16cb19ab26e4bdb3908f2d2b067b3e4a77b0351e2062d2901e8dad0e504. 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/4elJh9DUanyNsU3NALI19N.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/4elJh9DUanyNsU3NALI19N.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc918388dc59d129f586b627dbe0dbe7af7dc172c733d37ff029d7e1da3d79b92. 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/0czsQ1YOT71kdVfyFoTy3U.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/0czsQ1YOT71kdVfyFoTy3U.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22ff5e9aa9f37b5a1fa859a405e2f9c7b6eaf918976333d79debf662b0b62a9d. 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/44cwsD9eJj1kuSCTN808BT.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/44cwsD9eJj1kuSCTN808BT.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe33bf087e744486ae93b9af63e82b0300e9acb981b2924819f10461a98c5680b. 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/6eqH6lREX0ePq0XL1SlCy4.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/6eqH6lREX0ePq0XL1SlCy4.
{"copyright_id":"0x4a1d6ecc3a42152cfff47d80402cfa171c33819de488d5b6eaf7741cb88d3a1a","isrc":"USEE10500833","name":"Ravers - 12\" Version","registered_at":"2026-06-09T13:24:07Z","spotify_id":"6rmVTVMUiZfULS51lpzhDr","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a1d6ecc3a42152cfff47d80402cfa171c33819de488d5b6eaf7741cb88d3a1a. 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/6rmVTVMUiZfULS51lpzhDr.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/6rmVTVMUiZfULS51lpzhDr.
{"copyright_id":"0x25108c12af0ec1f440131d7e474ffaacfc6f1f396c65caa17c2e7f3daca825ba","isrc":"USEE10500834","name":"Leggo Beast - 12\" Version","registered_at":"2026-06-09T13:18:00Z","spotify_id":"2kWVuLPsLWbx3kc2xlfIrg","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25108c12af0ec1f440131d7e474ffaacfc6f1f396c65caa17c2e7f3daca825ba. 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/2kWVuLPsLWbx3kc2xlfIrg.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/2kWVuLPsLWbx3kc2xlfIrg.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x431e508e9d293aa5e8841ce2c9b777e89899af9ef09747af0c95479a56625bb5. 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/3cBmxgIxmU1dZkQ82ZEzuv.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/3cBmxgIxmU1dZkQ82ZEzuv.
{"copyright_id":"0x005a860b52e8c4219d6e23f278b33e29abfaa4d2678f68f2f05840def3ec1c66","isrc":"USEE10500836","name":"A Who Responsible - Dub Version","registered_at":"2026-06-11T00:50:46Z","spotify_id":"5KzKiV3JZHbmQ2tWK1H7go","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x005a860b52e8c4219d6e23f278b33e29abfaa4d2678f68f2f05840def3ec1c66. 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/5KzKiV3JZHbmQ2tWK1H7go.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/5KzKiV3JZHbmQ2tWK1H7go.