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 0x31bb4a49edd6dc73f3392a3334b4f8e1f5edd155e8c2b73580c67931286ca793. 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/55c4c7d0-2c95-49da-a27b-0bb9cb20a479.json and https://artists.proofprofile.net/proofs/artist/55c4c7d0-2c95-49da-a27b-0bb9cb20a479.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Happy Day In Hell (Hazbin Hotel Original Soundtrack)
{"copyright_id":"0xb4324025a393b3fd1cdcfc08c6c0e550f6f69492a8ef1311f0361bdd4e39ef7c","isrc":"QMB622301801","name":"Happy Day In Hell","registered_at":"2026-06-04T05:22:06Z","spotify_id":"1nEeHJvkOjHmFgDw8esamO","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 0xb4324025a393b3fd1cdcfc08c6c0e550f6f69492a8ef1311f0361bdd4e39ef7c. 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/1nEeHJvkOjHmFgDw8esamO.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/1nEeHJvkOjHmFgDw8esamO.
Hazbin Hotel Original Soundtrack (Part 2)
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.
{"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.
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.
{"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.
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.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c9694d905fa092579ed7a93fa5965cc935d41a5e9a994c0c7efce90bea0efd7. 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/5kU6kvk4wKvIARPwemwPxN.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/5kU6kvk4wKvIARPwemwPxN.
{"copyright_id":"0x33ec6aab8b01bbdd4d1d298a23cf2a760622acf556ac996a03ebf704f71ffa3f","isrc":"QZPLS2249029","name":"You In This Light","registered_at":"2026-06-10T18:02:17Z","spotify_id":"4fJwHxaJYK0uje4Ui5GTNC","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33ec6aab8b01bbdd4d1d298a23cf2a760622acf556ac996a03ebf704f71ffa3f. 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/4fJwHxaJYK0uje4Ui5GTNC.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/4fJwHxaJYK0uje4Ui5GTNC.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9e3275304b51971772ee82ab885b79f40b324095187a23e5e2b237e59981607. 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/4l8ptSXGfn1fRz6le3KHG3.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/4l8ptSXGfn1fRz6le3KHG3.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01d9f939e2c7ade27e2fb2aa812035c1207558c85d4eb0ca5e2e5d8d265d0740. 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/75YTk80c4nHVJIxYxb9KLU.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/75YTk80c4nHVJIxYxb9KLU.
{"copyright_id":"0x4c2b7e03a4a04e938035430bcb1ae51667a7a2f6e9aacd24ef2d7f35d2d1f8f0","isrc":"QZPLS2249033","name":"The Violet Hour (Finale)","registered_at":"2026-06-25T21:46:56Z","spotify_id":"6rAxkSEwQaP7xToQrsmVSB","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c2b7e03a4a04e938035430bcb1ae51667a7a2f6e9aacd24ef2d7f35d2d1f8f0. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6rAxkSEwQaP7xToQrsmVSB.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/6rAxkSEwQaP7xToQrsmVSB.
{"copyright_id":"0x578e7d331b08a8b1cafd8c5ec92436be06cb0a0da0c1f0746745e067436e11f3","isrc":"QZPLS2249017","name":"Rosamund (Reprise)","registered_at":"2026-06-23T05:29:31Z","spotify_id":"3qKDDqPyX2Rd8wV6ZC8OMg","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x578e7d331b08a8b1cafd8c5ec92436be06cb0a0da0c1f0746745e067436e11f3. 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/3qKDDqPyX2Rd8wV6ZC8OMg.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/3qKDDqPyX2Rd8wV6ZC8OMg.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc23600dc70fe1b048f66f74ce4c6fe8c3169b49e77b535b5c432147d1597108b. 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/1pJfGbM1qPQrNolT6RLlp5.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/1pJfGbM1qPQrNolT6RLlp5.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c87abeaaa65d7e090fa5e981ea991d1e96062219a3f40e47a5a9a533c004a79. 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/67KywWaL8o1QdAExrUGvr0.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/67KywWaL8o1QdAExrUGvr0.