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 0xf9d880d294f3f68a105afe1c6142a9e3105096bd41b40341e8b4068bfe36ecde. 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/dc572eab-8ed0-4cd8-ad4a-9146a7afd30f.json and https://artists.proofprofile.net/proofs/artist/dc572eab-8ed0-4cd8-ad4a-9146a7afd30f.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 0xad5ad709cd9083347317d0877e14fba2e983a206148a2dd915731be94e3c1f91. 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/6bhqJ5yX9hVb3S6teuds0p.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/6bhqJ5yX9hVb3S6teuds0p.
{"copyright_id":"0x6935c90479055d895fddff5ca9842ddcdd9d166fa38db2b17ffb12aded3d0ae7","isrc":"USQX91800331","name":"Sick Boy - Trobi Remix","registered_at":"2026-06-06T17:02:37Z","spotify_id":"5wY5vXuojS9V4e9Nh9yrwS","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6935c90479055d895fddff5ca9842ddcdd9d166fa38db2b17ffb12aded3d0ae7. 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/5wY5vXuojS9V4e9Nh9yrwS.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/5wY5vXuojS9V4e9Nh9yrwS.
{"copyright_id":"0x4b28bf6b72410e7e437dbf764b28d9f8ba32533a9176cfcf4b1dbf5a6f7f98dc","isrc":"SE6XX2180979","name":"FAST HÄR I TRAKTEN","registered_at":"2026-06-04T08:02:28Z","spotify_id":"3ex4xZq0oxBYBptnPLV9cy","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b28bf6b72410e7e437dbf764b28d9f8ba32533a9176cfcf4b1dbf5a6f7f98dc. 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/3ex4xZq0oxBYBptnPLV9cy.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/3ex4xZq0oxBYBptnPLV9cy.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4c3599bf12a4c5a5c00b1b748efbc112348be5dbf98246117cec1a05501be24. 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/5n68xr1csCewpCX1WC3lLI.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/5n68xr1csCewpCX1WC3lLI.
{"copyright_id":"0x35a3f1418c4bbb8eeba1a0b1c4a5a9736d99af3ae555cb129f3d58ec38c6f486","isrc":"NL5HJ2300127","name":"Demons In M'n Cup","registered_at":"2026-06-26T22:31:37Z","spotify_id":"3hgulirts4SWxuxcuxaDDG","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35a3f1418c4bbb8eeba1a0b1c4a5a9736d99af3ae555cb129f3d58ec38c6f486. 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/3hgulirts4SWxuxcuxaDDG.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/3hgulirts4SWxuxcuxaDDG.
Big Man - Mixed by Deejay Abstract / Hosted by 4Shobangers
Top Notch Extravaganza: Summer '19 (Mixed by Deejay Abstract / Hosted by 4Shobangers)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8348dfb85391f9b10ea2261b9c8c9eca36cda665604074262a11adda2e2c483. 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/6CasF7OaFADJG3VwvzQ2CG.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/6CasF7OaFADJG3VwvzQ2CG.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9533cac1887679d1b6bb827e5045c0c3e81e2fbc7a54320b284e60546aef15b. 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/3qwLZjk7XjC5Er0dMnkxye.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/3qwLZjk7XjC5Er0dMnkxye.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x346951cf48c7102a275e9d8121145b54bfbe0cd1ca48afa22c15b22dbf7dd092. 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/6Wv9Yn4m7PJhBFYv3KbtgW.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/6Wv9Yn4m7PJhBFYv3KbtgW.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02c83f43ef2007cb6e180e88368b51eb3aa4b3220ee26ac01a12076ea44a495b. 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/7EPNjzimfSsX4bsjQZwAIm.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/7EPNjzimfSsX4bsjQZwAIm.
Study Music, Vol. 1: Deep House (Presented by Spinnin' Records)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d90a799786dd9e049260e7351a85c8595b70268753d58a847adf1cb79ed5a2f. 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/3YrVBZ53Il3c6x7SZeLcrR.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/3YrVBZ53Il3c6x7SZeLcrR.
{"copyright_id":"0x20aa098df5ef0d701075ebf69ff565e5a9bf1c7b7f89d2b40cac869edd1c8cf3","isrc":"DEKF22101224","name":"Sukcesu Cena","registered_at":"2026-06-05T06:39:36Z","spotify_id":"5Mnre4ihIOGKexJI4WewMI","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20aa098df5ef0d701075ebf69ff565e5a9bf1c7b7f89d2b40cac869edd1c8cf3. 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/5Mnre4ihIOGKexJI4WewMI.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/5Mnre4ihIOGKexJI4WewMI.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ea4912f28beac00d7588b64c11114d31f7463c84d6561e9da035022618e8565. 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/59mHF1c4ctmuSVRxjkfomW.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/59mHF1c4ctmuSVRxjkfomW.
{"copyright_id":"0x1cca572dee5f687ee874bbff9dc5eecd770556ea9ff036747a05334f6b16d1a5","isrc":"NLS242300258","name":"After van de After","registered_at":"2026-06-02T00:07:28Z","spotify_id":"0VtqQFF2e5gttaeU3OzIg6","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cca572dee5f687ee874bbff9dc5eecd770556ea9ff036747a05334f6b16d1a5. 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/0VtqQFF2e5gttaeU3OzIg6.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/0VtqQFF2e5gttaeU3OzIg6.
{"copyright_id":"0x1cca572dee5f687ee874bbff9dc5eecd770556ea9ff036747a05334f6b16d1a5","isrc":"NLS242300258","name":"After van de After","registered_at":"2026-06-02T00:07:28Z","spotify_id":"2spa45WfQMrdEGLM9ZjDR4","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cca572dee5f687ee874bbff9dc5eecd770556ea9ff036747a05334f6b16d1a5. 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/2spa45WfQMrdEGLM9ZjDR4.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/2spa45WfQMrdEGLM9ZjDR4.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93d704cd18788f8d574c02f2729e0b36cc96fa02062dbce3b4bdc7035eac467f. 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/0g45SM1MltjtFstJl35m0R.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/0g45SM1MltjtFstJl35m0R.