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 0xd90f18d45750f43238c2b71adac6dfaec152b8df0cd1c33eaa196b732947bf82. 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/fe185bbf-8957-431a-a9fa-e9b0d230cbf0.json and https://artists.proofprofile.net/proofs/artist/fe185bbf-8957-431a-a9fa-e9b0d230cbf0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0xeb1305ec43bc69811f513cc4095c99d2711ec0d84062611cba9d7ff3cc8bf590","isrc":"DED831800383","name":"Inherit the Earth","registered_at":"2026-06-05T11:04:22Z","spotify_id":"2p7RDNKhoyxeW5nDjLeA8I","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 0xeb1305ec43bc69811f513cc4095c99d2711ec0d84062611cba9d7ff3cc8bf590. 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/2p7RDNKhoyxeW5nDjLeA8I.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/2p7RDNKhoyxeW5nDjLeA8I.
{"copyright_id":"0x25cc93993a4c3dddc7a3bc5c7f57b4edfacf9ec341d7fabdc71dd7761d795e3a","isrc":"DED831800384","name":"Honey Bucket","registered_at":"2026-06-04T12:16:33Z","spotify_id":"5c6AVCCGLj8PUEdDhglR7k","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25cc93993a4c3dddc7a3bc5c7f57b4edfacf9ec341d7fabdc71dd7761d795e3a. 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/5c6AVCCGLj8PUEdDhglR7k.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/5c6AVCCGLj8PUEdDhglR7k.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83058a3cfa4202caf9e7da47bbcc55dd943eb799ccfe1fdfbf024777c93e7b06. 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/2hCAqrPwZWl3218wmRHKh2.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/2hCAqrPwZWl3218wmRHKh2.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd9b99be2e9bd2c8c8c376529680c721359df523d90e614217d9d828ac389c41. 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/5IZfECwmFWsb5VqiWwCNFJ.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/5IZfECwmFWsb5VqiWwCNFJ.
{"copyright_id":"0x4d1ad6dc4eb05f1e08593d3a61a8696fd99aed20dee70644796e8be28c9d2da2","isrc":"DED831800387","name":"I Against I","registered_at":"2026-06-08T00:46:57Z","spotify_id":"7wiJ6t2DohMPKvxcxbxDxM","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d1ad6dc4eb05f1e08593d3a61a8696fd99aed20dee70644796e8be28c9d2da2. 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/7wiJ6t2DohMPKvxcxbxDxM.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/7wiJ6t2DohMPKvxcxbxDxM.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xace227738efc8a2f55e3ae51d4d1c9c190b341c10aff7ec24775336f3c7b4071. 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/5EpnOXjYSGqdUy4eHcIrP5.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/5EpnOXjYSGqdUy4eHcIrP5.
{"copyright_id":"0x730b4a4af1fca40835760c83a13ed590d7a8d2a128ae0aae4af625fcedb94462","isrc":"DED831800389","name":"Jesus Built My Hotrod","registered_at":"2026-06-08T00:46:55Z","spotify_id":"3m293yJx59QHJXvRUcOqZx","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x730b4a4af1fca40835760c83a13ed590d7a8d2a128ae0aae4af625fcedb94462. 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/3m293yJx59QHJXvRUcOqZx.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/3m293yJx59QHJXvRUcOqZx.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9643c7762ff2e69102a8614e1369f7331a3b12a31b65b41d38d5a98cf412dd5. 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/6kzjtRu260sh5O8IWVLcEd.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/6kzjtRu260sh5O8IWVLcEd.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe06804c2692221a03a2e74663c3eea87d3a79ff08fa8a9313443950cf06c394e. 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/2CfaUsmaaSyScIWNwt97M1.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/2CfaUsmaaSyScIWNwt97M1.
{"copyright_id":"0x21da23ea5e10dc08f749bc765161e84d89fdb84d1abdd00893cfe4c8ffddaa16","isrc":"DED831800392","name":"We Gotta Know","registered_at":"2026-06-19T22:56:41Z","spotify_id":"6fL52mSXpRxA2QI5bU4Oeq","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21da23ea5e10dc08f749bc765161e84d89fdb84d1abdd00893cfe4c8ffddaa16. 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/6fL52mSXpRxA2QI5bU4Oeq.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/6fL52mSXpRxA2QI5bU4Oeq.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79202a74a1159826b860db49b0a329a18c6ae6d257ef261e2016e1f6dd74f5e8. 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/4U2sYOURZiszXmdiJv55FQ.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/4U2sYOURZiszXmdiJv55FQ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c934c6be8271c9d42553513e8b9b872993007b2d71fc6ea21760c2b118b1675. 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/39VAJiRRWUHFB97rEhHIvv.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/39VAJiRRWUHFB97rEhHIvv.
{"copyright_id":"0xe5e702faeaf66edd11f8a0c0de90f247d9ff24753e5f9955ec18222cc570e986","isrc":"USSM11706338","name":"Resurrection #9","registered_at":"2026-06-08T17:11:25Z","spotify_id":"6D3oFNPessF4zXvLvpSewS","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5e702faeaf66edd11f8a0c0de90f247d9ff24753e5f9955ec18222cc570e986. 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/6D3oFNPessF4zXvLvpSewS.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/6D3oFNPessF4zXvLvpSewS.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f15ed4d0fdc626d09d435b9ccf224a5d21fbcf500a0bcf68dd73bced070c735. 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/5tsxlpnNuuHCVyVFGn6by1.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/5tsxlpnNuuHCVyVFGn6by1.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6d9b972ebf99355910f6d9c7f147083027d499af0e4d4507ed18999993a1e79. 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/3O3cEjYc2r7sL10tyFnQfX.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/3O3cEjYc2r7sL10tyFnQfX.
{"copyright_id":"0xba62537a6ee3a74d41a96041535dc77ae84edf86cb323b1eb5cd718023225984","isrc":"USSM11706341","name":"Lies of Autumn","registered_at":"2026-06-10T13:37:12Z","spotify_id":"5WHfoyzFPsnUoaHInNKnCS","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba62537a6ee3a74d41a96041535dc77ae84edf86cb323b1eb5cd718023225984. 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/5WHfoyzFPsnUoaHInNKnCS.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/5WHfoyzFPsnUoaHInNKnCS.
{"copyright_id":"0xeb861f41e77aece663a98c639e1310be755ca66b5151f9f3bf8d4fb8932faaa9","isrc":"USSM11706342","name":"Chronic Auditory Hallucination","registered_at":"2026-06-10T14:55:52Z","spotify_id":"3w23vdd2G5kg056QQvf3bQ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb861f41e77aece663a98c639e1310be755ca66b5151f9f3bf8d4fb8932faaa9. 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/3w23vdd2G5kg056QQvf3bQ.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/3w23vdd2G5kg056QQvf3bQ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30be920e277077fe086917820c9f15ac7777e0c261e799e376e80878a0a62850. 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/0aGfFr2or49nKvYXgvfahP.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/0aGfFr2or49nKvYXgvfahP.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02702531dae8c0b5cddf722bccb9e78a4d41a9f55f5a41a68fe5ec2d1a3e8440. 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/6Oi3VXsoQwYQTQL7QA7UVw.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/6Oi3VXsoQwYQTQL7QA7UVw.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1747150927c38a1a454fcdc3b154c593abc1e4e0b793266cfdc6e45301315ad0. 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/3FcW8aakPYzIkWMtL1kvIv.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/3FcW8aakPYzIkWMtL1kvIv.
{"copyright_id":"0x09e24d3cca4044153232132dde6ccef4d943b28280f6c64c6344b2b9c4af55a3","isrc":"USSM11706346","name":"Preaching to the Converted","registered_at":"2026-06-20T01:55:13Z","spotify_id":"0tH5AblC190HKkxgkYRSEx","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09e24d3cca4044153232132dde6ccef4d943b28280f6c64c6344b2b9c4af55a3. 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/0tH5AblC190HKkxgkYRSEx.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/0tH5AblC190HKkxgkYRSEx.
{"copyright_id":"0xaf28e933debe29c35f64be220d3fffd01fcb4450858395081373ecdab52fd111","isrc":"USSM11706347","name":"Departure Hymn","registered_at":"2026-06-19T22:57:07Z","spotify_id":"4dxXx9xwpgWDMeeMxZykOG","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf28e933debe29c35f64be220d3fffd01fcb4450858395081373ecdab52fd111. 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/4dxXx9xwpgWDMeeMxZykOG.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/4dxXx9xwpgWDMeeMxZykOG.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86cfe6b71e69d34a456bb43cc8d98a664f6df844d9b7cd928380dda2653dc7d8. 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/1WVTE9J2633mvP3QWCDLky.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/1WVTE9J2633mvP3QWCDLky.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c1e9c04412593d57225b4baa53d51d79f649522967ff71eea8dfd23c08023ab. 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/3XJkSBnZ02mfPoa5DpVbqv.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/3XJkSBnZ02mfPoa5DpVbqv.