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 0xb051d5f43e1fe38e224d66bad62691e7638eeee18bd1ab944dae2344f13f7551. 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/3bbbb2f9-d782-4f8b-b3b4-32ed3df4fd89.json and https://artists.proofprofile.net/proofs/artist/3bbbb2f9-d782-4f8b-b3b4-32ed3df4fd89.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0xe88a033c1e3c97443453e5778d2ec0e43a6bfffee2f98ada389bec50619cd9e8","isrc":"USPR39882359","name":"Pleasures Of The Night","registered_at":"2026-06-09T19:23:28Z","spotify_id":"2CToGwTQzQJm0DGRpSjsPS","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 0xe88a033c1e3c97443453e5778d2ec0e43a6bfffee2f98ada389bec50619cd9e8. 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/2CToGwTQzQJm0DGRpSjsPS.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/2CToGwTQzQJm0DGRpSjsPS.
{"copyright_id":"0x9328477dc3b74800f3592f53fb5ceee8b63d6ca66f4d0efa77b93f608b67014d","isrc":"USPR39882360","name":"The Nearness Of You","registered_at":"2026-06-20T10:04:09Z","spotify_id":"4ulKHoPTqwSvcHCK8SqSCV","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9328477dc3b74800f3592f53fb5ceee8b63d6ca66f4d0efa77b93f608b67014d. 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/4ulKHoPTqwSvcHCK8SqSCV.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/4ulKHoPTqwSvcHCK8SqSCV.
{"copyright_id":"0x88325f630a1f6e23abfa87f71a229bbece3269fae47b0510f66323dcb073c628","isrc":"USPR39882361","name":"Stop, Look, Listen To Your Heart","registered_at":"2026-06-19T15:11:46Z","spotify_id":"6MawaapqNHhGlXgdh4pb6b","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88325f630a1f6e23abfa87f71a229bbece3269fae47b0510f66323dcb073c628. 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/6MawaapqNHhGlXgdh4pb6b.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/6MawaapqNHhGlXgdh4pb6b.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2242aa81b711df75fe27a3825418573885f7441f6d1b2823e67f95b65ef61c44. 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/4SejFOEIO0KCKAIRX7p5Hz.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/4SejFOEIO0KCKAIRX7p5Hz.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0224aa2765195003b55a4e59688507550f65a2853d083dd12b6f04922b13ec81. 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/4KPR2VwWgWU1aRS0oTYUZk.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/4KPR2VwWgWU1aRS0oTYUZk.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11857e0e774d2102973d72202a668c20df62cd3daa9b9e935b30b4ac10428f2f. 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/2OpovJhe0qmELisA9mG7L0.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/2OpovJhe0qmELisA9mG7L0.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81e1d9196981b0033d668182dd951e3d2e12392a7b79c99a6ee5415155a0deda. 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/4iEpfQ47mxCoBzZNO203Rx.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/4iEpfQ47mxCoBzZNO203Rx.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x639d05ca89c71a2530089db25a52fa41e88714fb6884a0f0628895d54c07e7c3. 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/1mE7jFNBd1pUQYtIPKalrP.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/1mE7jFNBd1pUQYtIPKalrP.
Caribbean Cruising - Smooth Jazz Cruise (25 Tracks)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddb5cd27f40c4154bed19b5b68d843486a5e4fe2b800814b163603ed3345f43d. 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/69rNqgfESmxf06nnYUaCiW.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/69rNqgfESmxf06nnYUaCiW.