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 0x71e631f2a36420f8eb4d2f558708a78424a25f399becf937597720094b8a4302. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f3176e85-71cc-41d7-b8d8-b009032e411e.json and https://artists.proofprofile.net/proofs/artist/f3176e85-71cc-41d7-b8d8-b009032e411e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Hardcore By Nature (Official Titanium Festival 2022 Anthem)
{"copyright_id":"0x9661bccb97f3d970bdb2d4903cda05ea063117c2f260d248b3b8fb4512319b4f","isrc":"NLS202200094","name":"Hardcore By Nature (Official Titanium Festival 2022 Anthem)","registered_at":"2026-06-08T13:53:41Z","spotify_id":"6mzN5pUuD1btiIgTzitFps","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 0x9661bccb97f3d970bdb2d4903cda05ea063117c2f260d248b3b8fb4512319b4f. 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/6mzN5pUuD1btiIgTzitFps.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/6mzN5pUuD1btiIgTzitFps.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc131e8603610f0b228702e0db51eeca4146697913a80cf195c71f5665e1b365a. 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/0pcIExB9WDMsgRopRZQshN.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/0pcIExB9WDMsgRopRZQshN.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5500fda3bac0935b2685c062325eb1f1dcfc35e327949fba6c8886a776525804. 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/1qwALCUTap2fpYGuNXG38q.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/1qwALCUTap2fpYGuNXG38q.
{"copyright_id":"0xbfeb12c59c8af243502238ea7986ff602d0eefaa105185f48a17fbceab921a14","isrc":"NLS202200105","name":"Early Uptempo Mash","registered_at":"2026-06-19T08:03:24Z","spotify_id":"0uwzlseMDisNOpLbO6km2c","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfeb12c59c8af243502238ea7986ff602d0eefaa105185f48a17fbceab921a14. 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/0uwzlseMDisNOpLbO6km2c.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/0uwzlseMDisNOpLbO6km2c.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc131e8603610f0b228702e0db51eeca4146697913a80cf195c71f5665e1b365a. 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/2hemLVEYIMMIXLQAXUFDO4.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/2hemLVEYIMMIXLQAXUFDO4.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd540ea3a4b70d6b07aa4e6f1425792b350b4bce74ea25ee050e46e86bd30db5a. 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/2rKREsSWrgwJPw09TzC01q.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/2rKREsSWrgwJPw09TzC01q.
{"copyright_id":"0xd540ea3a4b70d6b07aa4e6f1425792b350b4bce74ea25ee050e46e86bd30db5a","isrc":"NLFL72200435","name":"Project 13.0","registered_at":"2026-06-07T08:47:53Z","spotify_id":"0MfghKRxeSaSxetFDBtSh2","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd540ea3a4b70d6b07aa4e6f1425792b350b4bce74ea25ee050e46e86bd30db5a. 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/0MfghKRxeSaSxetFDBtSh2.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/0MfghKRxeSaSxetFDBtSh2.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77063e40ea7ad23ea223758be910058ac1a98861ea8f7321c4e1de44387f55e8. 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/2Fdqr7jk1BoRMllZp01Mz4.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/2Fdqr7jk1BoRMllZp01Mz4.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd540ea3a4b70d6b07aa4e6f1425792b350b4bce74ea25ee050e46e86bd30db5a. 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/45r4RhJFScwiHohmvC7WPG.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/45r4RhJFScwiHohmvC7WPG.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfae3c3300b6979ab50b8c66fa7851bdbc2ffc7b9ba0605610b05387e4fcb8b8. 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/25Fq66IQ14mbJTov140tjx.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/25Fq66IQ14mbJTov140tjx.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc131e8603610f0b228702e0db51eeca4146697913a80cf195c71f5665e1b365a. 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/2pdpGXOpqUAKdISPIRci1r.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/2pdpGXOpqUAKdISPIRci1r.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64d233f49354fe7304bc9dc319bda2e2774b5fd822d21f8f2431b89640a167f1. 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/6VLN5LogWfe2GwleFy0KUI.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/6VLN5LogWfe2GwleFy0KUI.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x513651a8bc701164d51a069f6e444af23e18d2e29ab977f593730409fcbfd629. 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/4zGKyUnYE0hiaO8CqV1pap.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/4zGKyUnYE0hiaO8CqV1pap.
{"copyright_id":"0xf321b0d1db1ca0be76192db71b1c0e1efa6dccf9128b712249e31d4fc660caf6","isrc":"GBKQU2424121","name":"ON FIRE","registered_at":"2026-06-04T09:13:24Z","spotify_id":"3Ys1nZZAhSituWrry5GMCy","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf321b0d1db1ca0be76192db71b1c0e1efa6dccf9128b712249e31d4fc660caf6. 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/3Ys1nZZAhSituWrry5GMCy.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/3Ys1nZZAhSituWrry5GMCy.
{"copyright_id":"0x47945ee68ad59f3bbb89bdc7e75c2626d7193a6524f0f7ce8a9cd25c1321999c","isrc":"NLH2L2400195","name":"Stop Playing - Mix Cut","registered_at":"2026-06-23T04:18:03Z","spotify_id":"1bTaPaHZBqObvirCvGuyXR","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47945ee68ad59f3bbb89bdc7e75c2626d7193a6524f0f7ce8a9cd25c1321999c. 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/1bTaPaHZBqObvirCvGuyXR.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/1bTaPaHZBqObvirCvGuyXR.
Cryogenic Presents The Offensive Rage Album: Harder Dan Je Moeder
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb19a556174d54f023326f6892060ed5ad72146ebb2fb4385d56bad75caa38cf6. 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/29KB7e4xfEidBZ3qRJOUc1.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/29KB7e4xfEidBZ3qRJOUc1.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98c128130a781fb5b378d3b8a14d107a7dd75bb634806b501b409e3038fcea6a. 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/6TsWbgMqh1evvT5Wq7iq0z.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/6TsWbgMqh1evvT5Wq7iq0z.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dec09042ea6d5e0eea1be9999d391d349c2dd6106fb8aa6a7378a8b7690d85a. 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/4DKSnd7K0T9C7xnhIfeRnB.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/4DKSnd7K0T9C7xnhIfeRnB.
{"copyright_id":"0x3ee1f1bf3ef30be21fb4e8f3c701f7beb84af4dc00ff45af0872ee492506a7fd","isrc":"BEB682200105","name":"Side Fx's","registered_at":"2026-06-04T11:39:32Z","spotify_id":"6spJfEsmVEPs6GsvHGArRi","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ee1f1bf3ef30be21fb4e8f3c701f7beb84af4dc00ff45af0872ee492506a7fd. 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/6spJfEsmVEPs6GsvHGArRi.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/6spJfEsmVEPs6GsvHGArRi.