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 0x8e6848a9f6a2ea67171995695a0e324feadae696760e7886845ba6a15d006802. 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/4bdbcbf7-c420-4a27-a9ed-1fb224c108ce.json and https://artists.proofprofile.net/proofs/artist/4bdbcbf7-c420-4a27-a9ed-1fb224c108ce.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 0xaa39b1f558c8925bb52d3761a766c34e8d44f25858844776bfb5c7cbcd5be0a1. 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/26zjGmHA57lN9ef4bmG8ep.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/26zjGmHA57lN9ef4bmG8ep.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54e2b57661336ad815fb745ae994db4bf5d32afe7e8be48749dabe35a90e5d02. 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/0qj8h0mbnF2dD6dwaomOIf.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/0qj8h0mbnF2dD6dwaomOIf.
{"copyright_id":"0xddf6c74aff6cb1bccb94719ea35d0984ba3cdd98e674857e1722d150a4dd6bd3","isrc":"QZHZ51926218","name":"Hoje Eu Tô Bem","registered_at":"2026-06-05T20:09:33Z","spotify_id":"6fAQeVfTkFzLwPFIZGMOpA","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddf6c74aff6cb1bccb94719ea35d0984ba3cdd98e674857e1722d150a4dd6bd3. 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/6fAQeVfTkFzLwPFIZGMOpA.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/6fAQeVfTkFzLwPFIZGMOpA.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x449ee1af92fdcc45c52688f2d90fc5febd5fe78223ce9e2383ec7cf3b8000744. 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/2XKdoS3nJLsPlQfJdMbFq2.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/2XKdoS3nJLsPlQfJdMbFq2.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b96b0c4e57f41b33db1d3f7d865a84e5218f0e88a059a09edbb510631d0c1cd. 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/58rSkwn0cgv9r9K7HII9u0.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/58rSkwn0cgv9r9K7HII9u0.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05bf617d3532b031c8410af57b114d5ff0e7dff82d78e467b28fcead6a91ca6c. 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/1wCqqdjkTCFNL7hhX7kDoy.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/1wCqqdjkTCFNL7hhX7kDoy.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5914458aa88e0a34bf53e349fdf8fca92f6699b514449423ee5384b65ab14255. 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/6PCV5jgA8wBLvGIWbJR7la.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/6PCV5jgA8wBLvGIWbJR7la.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02d59de9bdfdc40da6f7d93a5b94d4132371be20412d4604094b47e8fd6a92b1. 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/67LDs7KNUYxHL4bjolPDSV.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/67LDs7KNUYxHL4bjolPDSV.
{"copyright_id":"0xf1d169670cfabc84332dce5ef6aa95351367456ef4da3e97d17530e31cd80562","isrc":"QZNJV2384210","name":"Beijo da Inspiração","registered_at":"2026-06-24T06:16:43Z","spotify_id":"2YmA6i3pFdhBMBQrNgn7wJ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1d169670cfabc84332dce5ef6aa95351367456ef4da3e97d17530e31cd80562. 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/2YmA6i3pFdhBMBQrNgn7wJ.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/2YmA6i3pFdhBMBQrNgn7wJ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f790076ddf21168051f09e368f54cafa4f9c7e3da3ef75aef78d05192073361. 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/4UT7jqh5cQMh81Ipj3x4IM.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/4UT7jqh5cQMh81Ipj3x4IM.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc9e74f5c2fc974c7b3afa97503f3b79788fd7286648fb5200f80797efab50df. 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/5zUa86GFIf5Ox2xub1j9VC.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/5zUa86GFIf5Ox2xub1j9VC.
{"copyright_id":"0x7fc666bf98062ebcad86d4082caf45a0a0cc287d25a5d2957765895c4fdd17f8","isrc":"QZNJV2384215","name":"Bruxa das Noites","registered_at":"2026-06-24T13:37:14Z","spotify_id":"7z6QZAK4jtJzJJE4wgGobY","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fc666bf98062ebcad86d4082caf45a0a0cc287d25a5d2957765895c4fdd17f8. 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/7z6QZAK4jtJzJJE4wgGobY.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/7z6QZAK4jtJzJJE4wgGobY.
{"copyright_id":"0xbb78a0ee3fff6ba4d48a6797148298bd041cbb8bd65de1b6fae005905aa7ca82","isrc":"BXYA62300005","name":"Ame, Mas Lute","registered_at":"2026-06-25T21:14:55Z","spotify_id":"7kaAuLOCOBvuQsGxyPYAvm","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb78a0ee3fff6ba4d48a6797148298bd041cbb8bd65de1b6fae005905aa7ca82. 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/7kaAuLOCOBvuQsGxyPYAvm.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/7kaAuLOCOBvuQsGxyPYAvm.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccb04995df3a3100e7eeea01f3a957239a4a5120dcb4c68753d95592b28101be. 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/6JaJlmyVkZsF0AgdJm0mx2.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/6JaJlmyVkZsF0AgdJm0mx2.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80ccb8369954603b3cb764abb19de5f736bcac7360213b708efde5765c600435. 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/7KgBfHL70KAQ9uyFxHz0P0.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/7KgBfHL70KAQ9uyFxHz0P0.
{"copyright_id":"0x688277f26d1fb1e3e0a89d86e270d18c4bfe8e75f36d1b146c1bfab5ae5e4b79","isrc":"BXYA62000020","name":"sem pressa","registered_at":"2026-06-20T02:09:49Z","spotify_id":"1zDwWCSJ84MaqBxyshRTO8","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x688277f26d1fb1e3e0a89d86e270d18c4bfe8e75f36d1b146c1bfab5ae5e4b79. 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/1zDwWCSJ84MaqBxyshRTO8.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/1zDwWCSJ84MaqBxyshRTO8.