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 0xa6412808064e564150210e4f9ba252d8b6f74f64f70e84ee99e728641ac9cf6f. 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/cbcb188b-fab5-43fa-af8d-db8454188b91.json and https://artists.proofprofile.net/proofs/artist/cbcb188b-fab5-43fa-af8d-db8454188b91.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 0x75bcfc72036abd7e17c4b0740291ab8d0e897178f7a6ea4b190885c3dd39f902. 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/3xd4xEMTEBMV9CN8cAqSkI.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/3xd4xEMTEBMV9CN8cAqSkI.
{"copyright_id":"0x200aa677cb4a8f9996a5c36a9dbbbfb9f4b5189b3aa846c622c84981be52c77c","isrc":"QZTRX2374271","name":"Hold Up","registered_at":"2026-06-20T10:29:00Z","spotify_id":"3SHGhQYHrGgsRdLZGjjyxt","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x200aa677cb4a8f9996a5c36a9dbbbfb9f4b5189b3aa846c622c84981be52c77c. 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/3SHGhQYHrGgsRdLZGjjyxt.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/3SHGhQYHrGgsRdLZGjjyxt.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x316dc6bb07670b70e164dd7142f1a87d60b0f37c0b3bf79584058dd92942678e. 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/0KW3srRTtq1XSRRBykgjNm.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/0KW3srRTtq1XSRRBykgjNm.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20f11bba5cc993affea514b564007112e72eafade4790654fb6022242411ddd2. 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/2ccD1tfwjA8UBLh4EGlLr6.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/2ccD1tfwjA8UBLh4EGlLr6.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50ae2430c4bd36852993e22889d4de2cfbf730b1e8f0fc01f21bfc227a022c48. 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/3TUozRWEkYx6HHk354iMGj.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/3TUozRWEkYx6HHk354iMGj.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x197bea86a1c1dff60713e8e3843cd46d127987529b1c44110321dc005dc0e866. 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/3stvclv9DCO7vNAetN24BM.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/3stvclv9DCO7vNAetN24BM.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86cfe1fb12d45c289ac900466f65d15795e63e441d5213b73157fe909e668935. 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/2BXQ4XsLRCssKvUVtb6nPu.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/2BXQ4XsLRCssKvUVtb6nPu.
The Sound - Affects, Thayana Valle Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0991ee8b44238d341f36651c77b729f72094a08beaa3a17aed92f9e4c73f0193. 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/38MfRPT4KFpg5PPCfqMoIA.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/38MfRPT4KFpg5PPCfqMoIA.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a7531f835a98d9a5fcc624255bccde2e62cfb216e8b10514fdbd0d5da73a396. 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/37i8CmM1DLBNe08PUI3fvq.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/37i8CmM1DLBNe08PUI3fvq.
{"copyright_id":"0x742c72d496dcfd6ea33b602762180df96e057a1dc73abd4d4d423bbceaf01415","isrc":"GBK6Y2057803","name":"Joker - Vintage Culture 'Raw' Remix","registered_at":"2026-06-22T08:36:31Z","spotify_id":"3Y5vQz6CAxBNwTxbNa6bNE","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x742c72d496dcfd6ea33b602762180df96e057a1dc73abd4d4d423bbceaf01415. 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/3Y5vQz6CAxBNwTxbNa6bNE.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/3Y5vQz6CAxBNwTxbNa6bNE.
The Sound - Kreisel.(CH) & Jay Mexx Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fec61269062ad2599ddac42747827c7002830066adb4139ec8012533b1a90af. 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/2wl6NmYF0ZQ5DEKcTivygn.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/2wl6NmYF0ZQ5DEKcTivygn.
{"copyright_id":"0x8768a86797b549b744c74bf0b7a750aeef98becceaff581564856d0eb4e5497e","isrc":"USLZJ1919929","name":"You and Me - Tough Art Remix Intro","registered_at":"2026-06-04T10:20:53Z","spotify_id":"1POQgqiUzYg9oEu9tMkJDd","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8768a86797b549b744c74bf0b7a750aeef98becceaff581564856d0eb4e5497e. 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/1POQgqiUzYg9oEu9tMkJDd.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/1POQgqiUzYg9oEu9tMkJDd.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9072927591e865bbc5074b863005ccec44ca72bd2e75b10f4722ff03ed6d404. 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/7hShYRgKuVcLr85WOxMF7B.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/7hShYRgKuVcLr85WOxMF7B.
{"copyright_id":"0xea6e0be1e7d66e4b4dfc50e56416779c7be8355a9b0f7063e640a2e0e5cb3c5c","isrc":"QZ5FN1896444","name":"On the Floor","registered_at":"2026-06-23T12:43:48Z","spotify_id":"4bc4GelVvyGvjH4jx2B1un","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea6e0be1e7d66e4b4dfc50e56416779c7be8355a9b0f7063e640a2e0e5cb3c5c. 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/4bc4GelVvyGvjH4jx2B1un.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/4bc4GelVvyGvjH4jx2B1un.