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 0xa47a624b5a8f7b88912852cbdbb339ab7f2dbb491aea535c76b2bdfa2d88c7b8. 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/7bf0081c-75b0-438d-aca4-15b85ec4dd77.json and https://artists.proofprofile.net/proofs/artist/7bf0081c-75b0-438d-aca4-15b85ec4dd77.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 0xe63cb846361cba7432072cee031dc1d68b43ffc2b526894076ae0d645322271a. 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/39C3SOi6UMD9rHeXAQPNa9.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/39C3SOi6UMD9rHeXAQPNa9.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2880d090f28014f877b9ff08eef8ad522c88d63faa76f8308379d22d8d379b23. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1TPvJ70l03Mqt7Cd1lec9H.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/1TPvJ70l03Mqt7Cd1lec9H.
{"copyright_id":"0x4b145628ccfe7b5fb3bfb8a91ffbfefa29b32a57d14c740408f07cf240d7f0f0","isrc":"GBAHS2300949","name":"Desire - PAJANE Remix","registered_at":"2026-06-26T23:20:14Z","spotify_id":"6DdwWo0k7HP6x3owtb45TU","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b145628ccfe7b5fb3bfb8a91ffbfefa29b32a57d14c740408f07cf240d7f0f0. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6DdwWo0k7HP6x3owtb45TU.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/6DdwWo0k7HP6x3owtb45TU.
{"copyright_id":"0x1c02989fda4f97697a86e220d3ec7d48bcea331444bb973621b428cd2d8a453c","isrc":"GBAHS2300950","name":"Desire - AJAK Remix","registered_at":"2026-06-10T14:15:19Z","spotify_id":"6hpnAnAxMMDssIkxekuzjD","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c02989fda4f97697a86e220d3ec7d48bcea331444bb973621b428cd2d8a453c. 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/6hpnAnAxMMDssIkxekuzjD.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/6hpnAnAxMMDssIkxekuzjD.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0541f14d56f9718fdebb9fd5022577a421a03770108a54ddd855e88a38193719. 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/6wWpd4KAsEaRw6DzDWXgas.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/6wWpd4KAsEaRw6DzDWXgas.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18d2028931a3fda567f0660c9589024d8918ac1879976d70103ff184a9712303. 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/5Uo7AAr2d1CNZlaKgVUT3i.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/5Uo7AAr2d1CNZlaKgVUT3i.
Faded Away (feat. Icona Pop) [Cabu Remix]
Faded Away (feat. Icona Pop) - Cabu Remix
{"copyright_id":"0x4ce294b6ebf0fbbfdd9060e333346135015430ff0971534f9ecbe1cf1e090cdb","isrc":"USAT21801876","name":"Faded Away (feat. Icona Pop)","registered_at":"2026-06-20T06:16:46Z","spotify_id":"7rSvCVlW02INJfDHIWIc9W","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ce294b6ebf0fbbfdd9060e333346135015430ff0971534f9ecbe1cf1e090cdb. 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/7rSvCVlW02INJfDHIWIc9W.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/7rSvCVlW02INJfDHIWIc9W.
{"copyright_id":"0xafcf8e6a9a3bd253bf1efefa1dfe7109e8b9a2ca3eb180bf9c1128bbe3e0d6ff","isrc":"SEWEE1300703","name":"All Night","registered_at":"2026-06-06T07:27:22Z","spotify_id":"1ADGydOgtuzBNmdFpcQGLB","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafcf8e6a9a3bd253bf1efefa1dfe7109e8b9a2ca3eb180bf9c1128bbe3e0d6ff. 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/1ADGydOgtuzBNmdFpcQGLB.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/1ADGydOgtuzBNmdFpcQGLB.
{"copyright_id":"0xf993cb1bee2b18a034c25e62febc00fb12e0dfa72ba324d64d1b22f245f3fac8","isrc":"USAT21202802","name":"I Love It (feat. Charli XCX)","registered_at":"2026-06-01T08:55:41Z","spotify_id":"3VZQshi4COChhXaz7cLP02","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf993cb1bee2b18a034c25e62febc00fb12e0dfa72ba324d64d1b22f245f3fac8. 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/3VZQshi4COChhXaz7cLP02.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/3VZQshi4COChhXaz7cLP02.
TROLLS World Tour (Original Motion Picture Soundtrack)
{"copyright_id":"0x8ab41965e19e17fde97b3e569e3e5909df2bb00c3e46593a35b2f1a623897e8e","isrc":"US3DF2214226","name":"Payback (feat. Icona Pop)","registered_at":"2026-06-07T10:46:52Z","spotify_id":"2if7ekuzxGrWafhOqEpnd4","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ab41965e19e17fde97b3e569e3e5909df2bb00c3e46593a35b2f1a623897e8e. 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/2if7ekuzxGrWafhOqEpnd4.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/2if7ekuzxGrWafhOqEpnd4.
{"copyright_id":"0x4feab3e8eec304f71384c0a1e8785430e9833fb613335b37bd20b22bfed1d619","isrc":"USAT21206765","name":"I Love It (feat. Charli XCX)","registered_at":"2026-06-06T02:40:53Z","spotify_id":"0iPzFrT8mtEtjZWfP5F4af","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4feab3e8eec304f71384c0a1e8785430e9833fb613335b37bd20b22bfed1d619. 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/0iPzFrT8mtEtjZWfP5F4af.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/0iPzFrT8mtEtjZWfP5F4af.
I Love My Friends (feat. Icona Pop) - Armin van Buuren & Avian Grays Remix
{"copyright_id":"0x3afb2e3381bcc782c4e71152502e5c5f8bf95405d52277b9d2241585017f582e","isrc":"USUS12000123","name":"I Love My Friends (feat. Icona Pop) - Armin van Buuren & Avian Grays Remix","registered_at":"2026-06-09T04:21:01Z","spotify_id":"0vKbfPxNiyla2lycgYYhnC","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3afb2e3381bcc782c4e71152502e5c5f8bf95405d52277b9d2241585017f582e. 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/0vKbfPxNiyla2lycgYYhnC.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/0vKbfPxNiyla2lycgYYhnC.
This Is How We Party (Cat Dealers Remix)
{"copyright_id":"0x612c3b0c2f0d00b044ebacc979e60a9173cad44a159d6638753fa166ee9cbead","isrc":"NLW4L1900126","name":"This Is How We Party (Cat Dealers Remix)","registered_at":"2026-06-22T18:36:03Z","spotify_id":"79GZlPElm3ZnPx8ZiykpRS","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x612c3b0c2f0d00b044ebacc979e60a9173cad44a159d6638753fa166ee9cbead. 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/79GZlPElm3ZnPx8ZiykpRS.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/79GZlPElm3ZnPx8ZiykpRS.