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 0xf472f59a766b63206cd0dd6456ca036b67dc8e12d31c97b6a65219d3e44f6907. 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/d2cde28b-fb69-4695-a487-495a02708718.json and https://artists.proofprofile.net/proofs/artist/d2cde28b-fb69-4695-a487-495a02708718.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 0x4bc59fe585a037cacd0479a7d57fcbd2cd445383e87274611717116017295a76. 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/0A1EWgEq549Ik73Xj9rhgv.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/0A1EWgEq549Ik73Xj9rhgv.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6b71d0fe9ebb8c530978aefd61c6fc9f979994ce807919af32852fe214a0613. 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/5kGuNbNtvv5NeeriVTKi04.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/5kGuNbNtvv5NeeriVTKi04.
{"copyright_id":"0xc7d3a7e64541bce838f4f18951c819ea3e6416c54acfeda8f1218ec5bf185d9c","isrc":"SE6A92306792","name":"FATTAR INGENTING - (Yetixz Remix)","registered_at":"2026-06-10T00:08:31Z","spotify_id":"0Oh3lN8aDI173FJgxIR44U","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7d3a7e64541bce838f4f18951c819ea3e6416c54acfeda8f1218ec5bf185d9c. 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/0Oh3lN8aDI173FJgxIR44U.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/0Oh3lN8aDI173FJgxIR44U.
{"copyright_id":"0x39ea1856dad710c3b98788325e1fece6dce5a0a9d63323f28461c41b44b5b2a3","isrc":"SE6XX2308351","name":"FATTAR INGENTING - (Mojnz Remix)","registered_at":"2026-06-20T18:15:55Z","spotify_id":"111LIGpkhjDHYQXv7jmKaj","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39ea1856dad710c3b98788325e1fece6dce5a0a9d63323f28461c41b44b5b2a3. 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/111LIGpkhjDHYQXv7jmKaj.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/111LIGpkhjDHYQXv7jmKaj.
{"copyright_id":"0xd411c86d4b14f29fbdbbb7b1e6ea2b5114d9cb3b3811cd6d540b3b7a5ebf55b6","isrc":"SE62M2380697","name":"FATTAR INGENTING - (Hugge Remix)","registered_at":"2026-06-25T05:59:50Z","spotify_id":"30W5NaaouzU5eGkd1M7p1L","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd411c86d4b14f29fbdbbb7b1e6ea2b5114d9cb3b3811cd6d540b3b7a5ebf55b6. 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/30W5NaaouzU5eGkd1M7p1L.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/30W5NaaouzU5eGkd1M7p1L.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4559af288533a65c2536da47178f47a363719efd4c8554c757c755fd1213f7c. 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/6aOCjLfdp8pTgeNWt677qq.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/6aOCjLfdp8pTgeNWt677qq.
{"copyright_id":"0x2b6b07392e00f29f4f08a2826e6d112b866013edfc01ac3378c1e11a090afff7","isrc":"SE6XY2358911","name":"FATTAR INGENTING - (Greta Tuborg Remix)","registered_at":"2026-06-25T06:00:24Z","spotify_id":"56JeFiIk6XWfyWpLzeckQe","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b6b07392e00f29f4f08a2826e6d112b866013edfc01ac3378c1e11a090afff7. 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/56JeFiIk6XWfyWpLzeckQe.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/56JeFiIk6XWfyWpLzeckQe.
{"copyright_id":"0x3097b2e3d18b4bd7c6f8903d3c48ffddf4299c68e178e1e6a8b9c8e11e3fdfcb","isrc":"SE6A92357393","name":"FATTAR INGENTING - Mr. P & Jofa Remix","registered_at":"2026-06-10T09:41:48Z","spotify_id":"2XNV8QwytnwVmCqq0JbSrD","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3097b2e3d18b4bd7c6f8903d3c48ffddf4299c68e178e1e6a8b9c8e11e3fdfcb. 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/2XNV8QwytnwVmCqq0JbSrD.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/2XNV8QwytnwVmCqq0JbSrD.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27d517456eb33369670309321cfb25d3c810290a4f268ce983d684dab825e580. 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/2zThZucARCmrOaTahouYLf.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/2zThZucARCmrOaTahouYLf.
{"copyright_id":"0xdaa19afb08aa55adba874e5c274226ce3387724e0b05000df69222f36e75b6b5","isrc":"SE6I32325830","name":"FATTAR INGENTING","registered_at":"2026-06-04T10:34:40Z","spotify_id":"4g3bOuXNmyMoRQjtMjTcok","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaa19afb08aa55adba874e5c274226ce3387724e0b05000df69222f36e75b6b5. 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/4g3bOuXNmyMoRQjtMjTcok.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/4g3bOuXNmyMoRQjtMjTcok.
{"copyright_id":"0x30ae3feca2ef575136a783094651b5d779e9da5e65bc21ee5c3234ca1ad7c356","isrc":"USA2P2351968","name":"HEJ TOMTEGUBBAR","registered_at":"2026-06-11T23:34:06Z","spotify_id":"3c0besSUqbItxZ9oWchwC2","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30ae3feca2ef575136a783094651b5d779e9da5e65bc21ee5c3234ca1ad7c356. 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/3c0besSUqbItxZ9oWchwC2.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/3c0besSUqbItxZ9oWchwC2.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b155100ff4d5f9f04aff0038f76ea3df403b5f527a6f66ef278fb4d43f665b2. 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/1syOZn06ESCPz62uMKvLmh.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/1syOZn06ESCPz62uMKvLmh.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a178712e423469140a8e228c399589364843b5ffafd2f4c22910c8f8ce924fd. 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/4Yh6pvPmo5gGNPDGVwEU9D.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/4Yh6pvPmo5gGNPDGVwEU9D.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8bd20b0685fa69933f9522abee61a48ff22943110f3513c8305353edc93ff15. 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/2wbUQiH8gEUXSqdU42kMYe.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/2wbUQiH8gEUXSqdU42kMYe.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2414ccf410903b4523009ca4cf6f61d326ddca702876653ae76296b419fee807. 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/6ndqFF6l3kSkg6GYm3kaHJ.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/6ndqFF6l3kSkg6GYm3kaHJ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaa19afb08aa55adba874e5c274226ce3387724e0b05000df69222f36e75b6b5. 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/72lZsTXJnI8bOaeAA32jsy.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/72lZsTXJnI8bOaeAA32jsy.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01b32a34fc1d0327416ebee287707460d71b932a503083d2a186c1ad11ca8145. 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/2aRJL6oQqkiesnJOGNtoJF.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/2aRJL6oQqkiesnJOGNtoJF.
{"copyright_id":"0xd658a61af9ffd6109841b7f8a1b6ab3c0c38fff83531cf75875c59d7f80075ec","isrc":"SE5XG2405624","name":"BANGAR ALDRIG EN SHOT","registered_at":"2026-06-08T09:03:39Z","spotify_id":"7jd4zVij4ymYbFOknEf1mU","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd658a61af9ffd6109841b7f8a1b6ab3c0c38fff83531cf75875c59d7f80075ec. 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/7jd4zVij4ymYbFOknEf1mU.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/7jd4zVij4ymYbFOknEf1mU.