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 0x3fc0f3c8562bc8f5e5375998f58eec9d0d614892cdd1dfdd28c75c4feb7020be. 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/82085343-af4a-4371-ba77-c3b76b1c2c95.json and https://artists.proofprofile.net/proofs/artist/82085343-af4a-4371-ba77-c3b76b1c2c95.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0x55eaa59abf3c403af086e8877709982d8d7bb8743314fdea40e684783d87b365","isrc":"GBCJY1600123","name":"Colour The Past","registered_at":"2026-06-04T16:14:39Z","spotify_id":"3QcbprTquHjjQmHycDXnXE","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 0x55eaa59abf3c403af086e8877709982d8d7bb8743314fdea40e684783d87b365. 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/3QcbprTquHjjQmHycDXnXE.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/3QcbprTquHjjQmHycDXnXE.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18b89292074a63ceee94b983aa782f6de0770e63c3e1969510e7b8cb436e5827. 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/7Fq6UEtjvcOZmzLsy3mgzZ.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/7Fq6UEtjvcOZmzLsy3mgzZ.
{"copyright_id":"0x7f5e71519710b1276160eb7fab85e8e94549f8f4b5ae449b2cbcd619413907df","isrc":"GBCJY1800208","name":"Wading Through The Crowds","registered_at":"2026-06-06T16:52:05Z","spotify_id":"21dseKsf6VEJBMehBz8FfA","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f5e71519710b1276160eb7fab85e8e94549f8f4b5ae449b2cbcd619413907df. 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/21dseKsf6VEJBMehBz8FfA.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/21dseKsf6VEJBMehBz8FfA.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1976c9b604a7c5706454e232a87395e18c253ea8f4ffc12ecf79f201cb2a29dc. 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/2ftWgz1el9uzME59xkg8jT.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/2ftWgz1el9uzME59xkg8jT.
{"copyright_id":"0xda6dd75abadfb1d43aa9a9e4dc197c2748ab0aa0515dac6dbea5a985348fad1a","isrc":"CA6D22200633","name":"My Mind - Badjokes Remix","registered_at":"2026-06-21T23:39:20Z","spotify_id":"3wEYYSOSwCF7iSA7b2Cf9b","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda6dd75abadfb1d43aa9a9e4dc197c2748ab0aa0515dac6dbea5a985348fad1a. 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/3wEYYSOSwCF7iSA7b2Cf9b.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/3wEYYSOSwCF7iSA7b2Cf9b.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x363720650508036499770c2f193305fad65bfebbcec917d643033555c511d1ee. 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/68AaHOGG9A6TCEVSBZtjWm.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/68AaHOGG9A6TCEVSBZtjWm.
{"copyright_id":"0xdd6cc05648a297a78b88a73c556ebaf2db4a110d4af02038e0f9e190c826c309","isrc":"NLCK42227373","name":"Let Me Out - BCee Remix","registered_at":"2026-06-29T04:03:26Z","spotify_id":"4Oba9wc5MxqQIeSHCeBIxo","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd6cc05648a297a78b88a73c556ebaf2db4a110d4af02038e0f9e190c826c309. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4Oba9wc5MxqQIeSHCeBIxo.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/4Oba9wc5MxqQIeSHCeBIxo.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34cbdafda81f8f7fea367e57d6ee33c638861db386914e0a778e54bcd1dc7100. 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/3nwV50Jh5HJ2AGe9HFVik8.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/3nwV50Jh5HJ2AGe9HFVik8.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb664945885f45c9070df92a56a34ff900f7eb7e19e7d5247e91e0c788f3da1d2. 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/7ntQCOSDaLD1sGVJ1l2N06.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/7ntQCOSDaLD1sGVJ1l2N06.
{"copyright_id":"0x801d90771df0082faa2beacbfd4d8826b2415098e91848e60df0caa80e8db75c","isrc":"FR9W12245466","name":"All I Know - Edit","registered_at":"2026-06-18T16:50:53Z","spotify_id":"7pEQtjZ5yUPPmW89ACHeNC","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x801d90771df0082faa2beacbfd4d8826b2415098e91848e60df0caa80e8db75c. 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/7pEQtjZ5yUPPmW89ACHeNC.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/7pEQtjZ5yUPPmW89ACHeNC.
{"copyright_id":"0xda6dd75abadfb1d43aa9a9e4dc197c2748ab0aa0515dac6dbea5a985348fad1a","isrc":"CA6D22200633","name":"My Mind - Badjokes Remix","registered_at":"2026-06-21T23:39:20Z","spotify_id":"7uF9c7MgOQryPCXa7We2xM","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda6dd75abadfb1d43aa9a9e4dc197c2748ab0aa0515dac6dbea5a985348fad1a. 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/7uF9c7MgOQryPCXa7We2xM.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/7uF9c7MgOQryPCXa7We2xM.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3786a29bccf147b3df3e8d0e8213cca9886b1d9177725257fa4adb457eb8e25. 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/6j9g98yKVvNorNn6qx3J8y.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/6j9g98yKVvNorNn6qx3J8y.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa560b59fb855101ff927a7fcafb8467c4e41f557b15930c15a98a303a5921c11. 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/7hvEEq2J5ppv2QOWzjm5FX.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/7hvEEq2J5ppv2QOWzjm5FX.
{"copyright_id":"0xe338b5fcf58c69118bd2a4637ada24d01e4e17b4a52b84acab7de0d946ce2747","isrc":"GBCJY2100325","name":"Trial Mountain","registered_at":"2026-06-09T08:58:56Z","spotify_id":"4KDwtZPXrV956ctln5hYPg","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe338b5fcf58c69118bd2a4637ada24d01e4e17b4a52b84acab7de0d946ce2747. 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/4KDwtZPXrV956ctln5hYPg.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/4KDwtZPXrV956ctln5hYPg.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18b89292074a63ceee94b983aa782f6de0770e63c3e1969510e7b8cb436e5827. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7vQpf0YfYVnyXwWjOipkh3.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/7vQpf0YfYVnyXwWjOipkh3.
{"copyright_id":"0x4efe1652f7b420e2e9b258567c4d1d257e602bb47377de5752b79ca3cd334f27","isrc":"GBKQU2460121","name":"Mind Haunted (feat. Karina Ramage)","registered_at":"2026-06-18T04:49:05Z","spotify_id":"7FwjHLBR19cxoOy7x9c0JF","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4efe1652f7b420e2e9b258567c4d1d257e602bb47377de5752b79ca3cd334f27. 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/7FwjHLBR19cxoOy7x9c0JF.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/7FwjHLBR19cxoOy7x9c0JF.
{"copyright_id":"0xaf06409c9dcf8517b5ffb977a0e191c2f5a3f3eeb62531666fe2fcfdce2c84f4","isrc":"GBKQU2444344","name":"Not Today (ft. Karina Ramage)","registered_at":"2026-06-04T13:47:09Z","spotify_id":"2AbNB8BojmbtNuOsgAx6Su","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf06409c9dcf8517b5ffb977a0e191c2f5a3f3eeb62531666fe2fcfdce2c84f4. 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/2AbNB8BojmbtNuOsgAx6Su.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/2AbNB8BojmbtNuOsgAx6Su.