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 0xd88aabbd7a7b4517af167a6afe4f64380d49327bb9b17593d430ef07f8d3bd6d. 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/4bea075e-ad33-4661-be2d-c5ad9c0a0416.json and https://artists.proofprofile.net/proofs/artist/4bea075e-ad33-4661-be2d-c5ad9c0a0416.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 0xc68422f9f84c808b39950050d838695cdbfa0a988f8e123219b78547e3406c33. 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/5ed2Ov3NOVjGf6bEK6qlRH.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/5ed2Ov3NOVjGf6bEK6qlRH.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb32105a015c79dbdf18cc2b81225a60f7011f9a3f23b0140d0580b4cc673464. 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/4hwAvFNGY6pyFDc7GClcZ0.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/4hwAvFNGY6pyFDc7GClcZ0.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2897e60c20a75b404614122d6629e257a3ef113a25c0d051a53cf4a7543c3f74. 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/74jAXI1CuyFc1v3N1qLk1O.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/74jAXI1CuyFc1v3N1qLk1O.
{"copyright_id":"0xbcda9ae268750e93dcd41c82821fe4f44f01c7c91713488795b3890ca7ecbab7","isrc":"DGA0Q2389837","name":"All For You","registered_at":"2026-06-11T03:16:39Z","spotify_id":"5lHDR4IKwsfbH1rlUdQNYq","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcda9ae268750e93dcd41c82821fe4f44f01c7c91713488795b3890ca7ecbab7. 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/5lHDR4IKwsfbH1rlUdQNYq.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/5lHDR4IKwsfbH1rlUdQNYq.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8278690d484874e624afca00f731485a673c46a1bbc9664dd59cd0e1a52fc0dc. 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/2BeDCW6BwTuP7wUS53eL7B.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/2BeDCW6BwTuP7wUS53eL7B.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x713f8487e278a32cf801bef4b54f399ff2f794164f1e21e1869f0b45f0606b39. 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/7d81nMBVfwkgn1sxr8AgNq.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/7d81nMBVfwkgn1sxr8AgNq.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd450c6ede910a19e91628048658e76a787e767dbd7066fcbf3fa1f6805efda60. 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/2mbiikokAf59l12qyiZUik.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/2mbiikokAf59l12qyiZUik.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9773132f08be9b18c926951c52ef32af427e09e183f5efc1a8299ee6b24b2900. 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/61lAB554sZlXfE289wSqSo.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/61lAB554sZlXfE289wSqSo.
{"copyright_id":"0x10a8b0f94ea914b4957c770a3445ae43ef7c9900fc9ddde156c6df972df093cc","isrc":"DGA0Q2389842","name":"Against All Odds","registered_at":"2026-06-20T10:52:44Z","spotify_id":"7taIEKTiho8L8g9zdxhdqL","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10a8b0f94ea914b4957c770a3445ae43ef7c9900fc9ddde156c6df972df093cc. 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/7taIEKTiho8L8g9zdxhdqL.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/7taIEKTiho8L8g9zdxhdqL.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa06597e5973bba9f24c68afe61c8d19df7a74ba635ca983bce6ca58ea95d2efa. 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/6GIlgVR8T0CmD0gBYdtCaQ.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/6GIlgVR8T0CmD0gBYdtCaQ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe73e1bee6e99146994832177b9f99a4e89035f639a4b16d1a2328c852b520d03. 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/77c1kUUiIyAZFeXBykAPWv.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/77c1kUUiIyAZFeXBykAPWv.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee9d643413d47005480014cf85953def58b9aa7efe40cc4c6bf1f291f5c4396d. 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/7fySPC0UPNHmYdiliU9Hx8.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/7fySPC0UPNHmYdiliU9Hx8.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64f5c6b187e4ae047e74738edb4cb00c7ed8eedd77e30b0722d103cdabbbb25d. 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/4niUI5YOkanfXgUMTJvJRu.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/4niUI5YOkanfXgUMTJvJRu.
{"copyright_id":"0xbf41d557cdde25e26effcccda7ae0ee76b35c1475cd1cb43dfb7216900a2fdbe","isrc":"GBLFP2203903","name":"Cigarrete Talks","registered_at":"2026-06-23T12:30:16Z","spotify_id":"0VBcIx3WssPzcODBq6eMhW","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf41d557cdde25e26effcccda7ae0ee76b35c1475cd1cb43dfb7216900a2fdbe. 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/0VBcIx3WssPzcODBq6eMhW.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/0VBcIx3WssPzcODBq6eMhW.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde1fb1d73a53130d150ecf7b9fde0ba5e8cf8939fdf001302f041a5473f633cc. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4DeoQA3D9wgaGVVgi4EjQx.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/4DeoQA3D9wgaGVVgi4EjQx.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ad1f5083c2c186cd6c84c99f58827dc26545b49e4cdc993af3331170be47dc5. 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/5wPJ1FdEGjRMiJXdQy6sTF.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/5wPJ1FdEGjRMiJXdQy6sTF.
{"copyright_id":"0x9ecca12542b2742ba2c56d91ec1c7f81deafd186d2f3c3789b9daba40d81cd72","isrc":"GBLFP2203907","name":"The One","registered_at":"2026-06-23T12:30:25Z","spotify_id":"56ie5jFIb9NpIv2HLv9pXU","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ecca12542b2742ba2c56d91ec1c7f81deafd186d2f3c3789b9daba40d81cd72. 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/56ie5jFIb9NpIv2HLv9pXU.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/56ie5jFIb9NpIv2HLv9pXU.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a4f466e16891647cda4eb721c88cd745eb8e11175f4277a84dcfe3e5c0944a8. 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/7uvRHcPNsIMgcz8dwQ1ugi.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/7uvRHcPNsIMgcz8dwQ1ugi.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x217042c94e51a30323b46dc19b3e94889981c4784b81c408e87c2bb796cf3b16. 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/5DFNTa9Fz7nhtBJTKwQ7XV.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/5DFNTa9Fz7nhtBJTKwQ7XV.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab77320377330584416feb9371871850f62de454d38a3c73b5684bd14e7aaedc. 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/78i4nylBQzVp4wf2sX3x2O.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/78i4nylBQzVp4wf2sX3x2O.
{"copyright_id":"0x2a92fce6f03c61746cc66ae6d592589082443ac1f0fbaeddbd6f9aa408b1c504","isrc":"GBLFP2203913","name":"Take You to the Moon","registered_at":"2026-06-27T13:18:07Z","spotify_id":"3E3hK6ad7EvEviEL8sQrmG","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a92fce6f03c61746cc66ae6d592589082443ac1f0fbaeddbd6f9aa408b1c504. 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/3E3hK6ad7EvEviEL8sQrmG.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/3E3hK6ad7EvEviEL8sQrmG.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2972f15adc883f9d21c492d016d498f70a45dcb15bfb1865e39250dd1076897. 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/1scnVvInnUWb0dmLblNBCR.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/1scnVvInnUWb0dmLblNBCR.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9da2913299ed5e2ea20412ab3091c5b20bb24cbfb456a2575636723a9dd5321a. 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/6Cf1EKIMrVDBkjso0HqhiL.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/6Cf1EKIMrVDBkjso0HqhiL.