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 0x3d3b45c822cb656a2157a7f58cc24c0cd2b0e9bc8a26e61a071edf09b022d249. 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/b6c9c3b4-71e6-4ad4-85c4-2c3f1c0838aa.json and https://artists.proofprofile.net/proofs/artist/b6c9c3b4-71e6-4ad4-85c4-2c3f1c0838aa.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 0x7f3ab273e6ed8ce30c770fb1401889f535f2587ccbc3ed486c2570dd41f2c249. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2kk2WUXoBTtYJUyDoinV40.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/2kk2WUXoBTtYJUyDoinV40.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76a9d8c754971a79d0daf60876fa5146008665904cc9952e0f770d39395f36ac. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/47gI06QfSMlGSB1gAzQzDT.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/47gI06QfSMlGSB1gAzQzDT.
{"copyright_id":"0x14fa8ae3d515fe5e60db0d63a947cd0f6e8b6ceaa1dd21ed89ca2a0e5e8bbfec","isrc":"USLD91749228","name":"el paso (with Cuco)","registered_at":"2026-06-05T15:04:05Z","spotify_id":"6nu7Fpg5sarNYs8ElOozRQ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14fa8ae3d515fe5e60db0d63a947cd0f6e8b6ceaa1dd21ed89ca2a0e5e8bbfec. 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/6nu7Fpg5sarNYs8ElOozRQ.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/6nu7Fpg5sarNYs8ElOozRQ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76a9d8c754971a79d0daf60876fa5146008665904cc9952e0f770d39395f36ac. 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/53DaJlCHvPyEreazBK9Bz9.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/53DaJlCHvPyEreazBK9Bz9.
{"copyright_id":"0xaf645449e646bc73a9b77fed4fb01762b25219e5cd9d8aa9aa75d2fa4ca094ae","isrc":"USE7D2200097","name":"LAS HISTORIAS SE ACABAN","registered_at":"2026-06-04T09:05:23Z","spotify_id":"2nC7BmTP4okoyeJI6JRMVb","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf645449e646bc73a9b77fed4fb01762b25219e5cd9d8aa9aa75d2fa4ca094ae. 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/2nC7BmTP4okoyeJI6JRMVb.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/2nC7BmTP4okoyeJI6JRMVb.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8590a6f1b18aca10eb0f174dfca774b308a47171c7a3197e5806cafbf823be17. 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/08XOjWbCPNQZ9QQmR8cvVM.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/08XOjWbCPNQZ9QQmR8cvVM.
{"copyright_id":"0x452d77d7a90ae4b338ca84d48a151fba88ebd187a5c6f5e430e4bfe3285303a0","isrc":"QZHZ51938630","name":"Todo lo que fuimos","registered_at":"2026-06-19T18:52:54Z","spotify_id":"69QwyCpAASAKAaslV6SXh3","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x452d77d7a90ae4b338ca84d48a151fba88ebd187a5c6f5e430e4bfe3285303a0. 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/69QwyCpAASAKAaslV6SXh3.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/69QwyCpAASAKAaslV6SXh3.
{"copyright_id":"0x452d77d7a90ae4b338ca84d48a151fba88ebd187a5c6f5e430e4bfe3285303a0","isrc":"QZHZ51938630","name":"Todo Lo Que Fuimos","registered_at":"2026-06-19T18:52:54Z","spotify_id":"5WIRI0zkUFOgvX1mdp9hiH","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x452d77d7a90ae4b338ca84d48a151fba88ebd187a5c6f5e430e4bfe3285303a0. 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/5WIRI0zkUFOgvX1mdp9hiH.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/5WIRI0zkUFOgvX1mdp9hiH.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96af909c94617108e5d4872dc4b648741804ef460d33722ddcd915c57206bb6a. 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/15EbEcyVuKFKsQFLVQPjrr.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/15EbEcyVuKFKsQFLVQPjrr.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96af909c94617108e5d4872dc4b648741804ef460d33722ddcd915c57206bb6a. 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/1uuuVaqAMDG2tg9nuBrfHx.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/1uuuVaqAMDG2tg9nuBrfHx.
{"copyright_id":"0x38cfc8466648ad936da2c6e3d4d47acec331ce72c6c1dcc6583db07aa0452171","isrc":"QZGLS2467546","name":"Desde Que Te Vi","registered_at":"2026-06-21T08:41:56Z","spotify_id":"3GQINRVqXSfk2HtXMPUzq8","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38cfc8466648ad936da2c6e3d4d47acec331ce72c6c1dcc6583db07aa0452171. 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/3GQINRVqXSfk2HtXMPUzq8.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/3GQINRVqXSfk2HtXMPUzq8.