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 0x5d95c4cfac26b990da6cc0f5cf060b9166bb5d2a1cf5ce705916123fd16d3842. 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/7f97a1af-82d4-45b8-b558-c31f895425d2.json and https://artists.proofprofile.net/proofs/artist/7f97a1af-82d4-45b8-b558-c31f895425d2.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 0x77f2396a302ed93f1b05f6151717c3b8c90f510520aa25a6696c0ed145b2a4b4. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7w67dBS74RpqPgM4NBVUdj.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/7w67dBS74RpqPgM4NBVUdj.
{"copyright_id":"0xc119dfde525ca632693928189440c39a12637e12187e1ed4fcd6dad7ada45d1a","isrc":"NLS242000323","name":"Never Change","registered_at":"2026-06-29T15:03:50Z","spotify_id":"4mdUbIqeTe3LSVJOxdYyXQ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc119dfde525ca632693928189440c39a12637e12187e1ed4fcd6dad7ada45d1a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4mdUbIqeTe3LSVJOxdYyXQ.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/4mdUbIqeTe3LSVJOxdYyXQ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57782eba8969e67692a8ec9533843c7dde1467d36f487d4aba2b0160325c2867. 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/7Cmyq8WXNL2G1OBSkI8jTD.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/7Cmyq8WXNL2G1OBSkI8jTD.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9755ba464391dd0e0d467777c89cb5565e0093f32baff15c7024e4c0ea92ec79. 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/4YHUQw0i3O5YTu8sqyl3XB.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/4YHUQw0i3O5YTu8sqyl3XB.
{"copyright_id":"0x844b6f39bf30de3e0621f53eeb8e9f041189ffe39c2fef06da6c47dc60f92ffb","isrc":"NLV6L2000191","name":"Vitrines (feat. MocroManiac)","registered_at":"2026-06-10T06:47:02Z","spotify_id":"3W5TYa7Wp7NIuUAPqDZDSf","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x844b6f39bf30de3e0621f53eeb8e9f041189ffe39c2fef06da6c47dc60f92ffb. 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/3W5TYa7Wp7NIuUAPqDZDSf.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/3W5TYa7Wp7NIuUAPqDZDSf.
{"copyright_id":"0xc7ca4a401ecf44f9fb202573a67a8a54209da6c8408dde79e5b6befc87d566b1","isrc":"NLG661800631","name":"Blijven Rennen","registered_at":"2026-06-18T01:15:09Z","spotify_id":"47NKiq0hnSzEpLFisoiMpi","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7ca4a401ecf44f9fb202573a67a8a54209da6c8408dde79e5b6befc87d566b1. 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/47NKiq0hnSzEpLFisoiMpi.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/47NKiq0hnSzEpLFisoiMpi.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9755ba464391dd0e0d467777c89cb5565e0093f32baff15c7024e4c0ea92ec79. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6sZlVncHtQHeMWgHEa8jNr.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/6sZlVncHtQHeMWgHEa8jNr.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9ec91cbc43bf58f45d79ce6a44cfeddea767c39bf2b8f68381e127c0cb34175. 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/04PX7kBFHiCaRv7XzHv0qW.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/04PX7kBFHiCaRv7XzHv0qW.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa34c9e5a0bcd3a620b2af8f110b66a329c0652b5e27779917d0480e250b37096. 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/7CFjs5QhTzCKoaZthPrxwK.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/7CFjs5QhTzCKoaZthPrxwK.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6ebef6bf9bcf18a3137e2fc6696676871365040c9a0c10f1307eb2a240e6993. 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/0lzDUTZ1QWsUVwVZTz6tmv.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/0lzDUTZ1QWsUVwVZTz6tmv.
{"copyright_id":"0xf92e4d82e9ad951eb0ffec63f9a28e058f2d8ab40f15b77b477487f17ec04792","isrc":"NLJ7C1500004","name":"Niggas Weten Allang","registered_at":"2026-06-17T05:07:35Z","spotify_id":"0SrH1YQZhuPC6xrxtIdtUJ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf92e4d82e9ad951eb0ffec63f9a28e058f2d8ab40f15b77b477487f17ec04792. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T20:36:19Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0SrH1YQZhuPC6xrxtIdtUJ.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/0SrH1YQZhuPC6xrxtIdtUJ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf24d90133409d154012a8279911bd08a5d24fb35932410e377a49d9417c4e3e. 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/65dV4ptt60vrD0ICKwXG51.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/65dV4ptt60vrD0ICKwXG51.
{"copyright_id":"0xe0fe4330f9f359d1d3c51a78ad358a23c17f598e31375fb9eabeabe095ad6c28","isrc":"NLJ7C1500006","name":"Niet Dichtbij","registered_at":"2026-06-11T16:37:21Z","spotify_id":"4Xff3s5efmTyG8w6rsSn3K","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0fe4330f9f359d1d3c51a78ad358a23c17f598e31375fb9eabeabe095ad6c28. 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/4Xff3s5efmTyG8w6rsSn3K.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/4Xff3s5efmTyG8w6rsSn3K.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa34c9e5a0bcd3a620b2af8f110b66a329c0652b5e27779917d0480e250b37096. 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/2k3bp4FHL2Q9u4Ve8OEhHB.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/2k3bp4FHL2Q9u4Ve8OEhHB.
Het Is Mani - Mixed by Deejay Abstract / Hosted by 4Shobangers
Top Notch Extravaganza: Summer '19 (Mixed by Deejay Abstract / Hosted by 4Shobangers)
Muhammad Ali (feat. MocroManiac, Hef, Boef & Lijpe)
{"copyright_id":"0xe8365f646dc59d51bb141675cc99b00cde4d187cf01daf5c2a86923b407ca4fd","isrc":"GB3CE1600014","name":"Muhammad Ali (feat. MocroManiac, Hef, Boef & Lijpe)","registered_at":"2026-06-06T18:04:11Z","spotify_id":"07d579bKEYrN2tQ0Xb22nU","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8365f646dc59d51bb141675cc99b00cde4d187cf01daf5c2a86923b407ca4fd. 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/07d579bKEYrN2tQ0Xb22nU.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/07d579bKEYrN2tQ0Xb22nU.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d9384e7b5a0acf811fa486b8031010a68d8432252500ca142a31891ec109830. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4lvE6IS6n4fxi7ZgLTnZGc.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/4lvE6IS6n4fxi7ZgLTnZGc.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2f1ce070d818e402596712aaf5313981bfbd591f87a6d7e65ef3e5d8ffbaab3. 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/5pKjSGltjQmaNum51InRvA.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/5pKjSGltjQmaNum51InRvA.