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 0xf34e971a6c882893b12f41feb8f628f015655cf5243181a87fd63a5b651447ad. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6a5a1d2e-c1c5-456c-9975-2c840291d940.json and https://artists.proofprofile.net/proofs/artist/6a5a1d2e-c1c5-456c-9975-2c840291d940.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Poison (Hazbin Hotel Original Soundtrack)
Poison - Hazbin Hotel Original Soundtrack
{"copyright_id":"0xcf28ebc3b20d27a89d0a4fac113685f944c93cffd0676d7746d80a77e40e6b66","isrc":"QMB622301802","name":"Poison - Hazbin Hotel Original Soundtrack","registered_at":"2026-06-01T07:39:30Z","spotify_id":"6ZXL1A1BVshe1JZ1IY734k","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 0xcf28ebc3b20d27a89d0a4fac113685f944c93cffd0676d7746d80a77e40e6b66. 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/6ZXL1A1BVshe1JZ1IY734k.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/6ZXL1A1BVshe1JZ1IY734k.
Hazbin Hotel Original Soundtrack (Part 1)
Hazbin Hotel: Season Two (Original Soundtrack)
Hazbin Hotel Original Soundtrack (Part 2)
{"copyright_id":"0xa535ec5fb18df0501ca847efbe07ab516a1d9b5d4d4cbdd3c8b6c04c5cae48c6","isrc":"QMB622401808","name":"Loser, Baby","registered_at":"2026-06-01T07:39:25Z","spotify_id":"6zJjw0iXY0aMBEUyCG1NsA","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa535ec5fb18df0501ca847efbe07ab516a1d9b5d4d4cbdd3c8b6c04c5cae48c6. 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/6zJjw0iXY0aMBEUyCG1NsA.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/6zJjw0iXY0aMBEUyCG1NsA.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5ea6718e1f5c22723049678f5294c54c29728d5aa02e1317dae5259bf41e354. 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/2h4MTQZP8quVwuwrtIPErD.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/2h4MTQZP8quVwuwrtIPErD.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23fd6e2310b78b73db5efe74d8ee423bf32b79852cea6de399af6013fc7e8913. 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/4Po97bPnn3ISdEkuJBMt2f.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/4Po97bPnn3ISdEkuJBMt2f.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x825422b386357953f3fee6cffaf64cbea1ee53a6f6eb4a481924fda2df1a90ea. 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/2LyuaHvi331NSj44dOxulG.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/2LyuaHvi331NSj44dOxulG.
{"copyright_id":"0xaaf056eac80c90805d4c399258f4378e309a8c12bb74badebf4c0446fbbe4289","isrc":"QMB622401802","name":"Hell Is Forever","registered_at":"2026-06-01T11:22:33Z","spotify_id":"6Ux7hThoEVu7V0YmmZqunV","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaf056eac80c90805d4c399258f4378e309a8c12bb74badebf4c0446fbbe4289. 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/6Ux7hThoEVu7V0YmmZqunV.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/6Ux7hThoEVu7V0YmmZqunV.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdee3545e3d058e210ab937ee1c63a415a66514e0828e850c5663ed7ed071f865. 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/0nD9zX0pnjOGhwZbCtMSGR.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/0nD9zX0pnjOGhwZbCtMSGR.
{"copyright_id":"0x485a4bb48f5de126c1ebde2cff6daba60513ddb56a5950ec880b0cb3ac073eac","isrc":"QMB622401813","name":"Out For Love","registered_at":"2026-06-01T10:52:28Z","spotify_id":"3CAgZdCErAPdUBwFmaRyGA","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x485a4bb48f5de126c1ebde2cff6daba60513ddb56a5950ec880b0cb3ac073eac. 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/3CAgZdCErAPdUBwFmaRyGA.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/3CAgZdCErAPdUBwFmaRyGA.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x051b45bcdeca9df118108b210d0ce4c3c2e1ac9fa30522210278ca486244d361. 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/64bs8pCgpueh0mFEKZWGXS.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/64bs8pCgpueh0mFEKZWGXS.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb30dbcce1158f9a00ad2734bc0a9294581a51205955a01832152152e34ae1ded. 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/6dss2WRbaDVKw4vpZlNxSv.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/6dss2WRbaDVKw4vpZlNxSv.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c49d2a87854b7ba9bb6e2f50ae9f476b530b2bc10e7ffe58c091f58376c6e50. 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/6JyzuWC92biyVZ1l4vUYzi.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/6JyzuWC92biyVZ1l4vUYzi.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf28ebc3b20d27a89d0a4fac113685f944c93cffd0676d7746d80a77e40e6b66. 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/7kEzfZXbV63tlqkPyyRd7n.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/7kEzfZXbV63tlqkPyyRd7n.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8086f354e388128761ab012ab523fe003667c7f260b5243dd4fc5649dc1e02d3. 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/0CY6AXx4FXWMzJpruDy0EG.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/0CY6AXx4FXWMzJpruDy0EG.
{"copyright_id":"0xa4dc5bfb7374252f526bff34c149c55d1875c88c255ff29beb45c63f456c0bf1","isrc":"QMB622401804","name":"It Starts With Sorry","registered_at":"2026-06-02T00:55:47Z","spotify_id":"5HPzrBzcD73ltEo5cCCl8Z","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4dc5bfb7374252f526bff34c149c55d1875c88c255ff29beb45c63f456c0bf1. 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/5HPzrBzcD73ltEo5cCCl8Z.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/5HPzrBzcD73ltEo5cCCl8Z.
{"copyright_id":"0x48891a239be629dc2c2962d3bded0a3e61bc237ad8492b9a3e7196def27d309f","isrc":"QMB622401811","name":"Welcome To Heaven","registered_at":"2026-06-02T02:08:31Z","spotify_id":"1Hqk4SHLCLSQYfORVEcWkf","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48891a239be629dc2c2962d3bded0a3e61bc237ad8492b9a3e7196def27d309f. 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/1Hqk4SHLCLSQYfORVEcWkf.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/1Hqk4SHLCLSQYfORVEcWkf.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a62d073f3a264c31d781b85182c642041b15516b9913ffb934ec9095c83b7ce. 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/0Kq2P8gDwYTc2OdiHknX7F.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/0Kq2P8gDwYTc2OdiHknX7F.
{"copyright_id":"0xb4324025a393b3fd1cdcfc08c6c0e550f6f69492a8ef1311f0361bdd4e39ef7c","isrc":"QMB622301801","name":"Happy Day In Hell","registered_at":"2026-06-04T05:22:06Z","spotify_id":"57BK2VtFiJZQ8YbiCccHde","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4324025a393b3fd1cdcfc08c6c0e550f6f69492a8ef1311f0361bdd4e39ef7c. 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/57BK2VtFiJZQ8YbiCccHde.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/57BK2VtFiJZQ8YbiCccHde.