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 0x1882de33fc5828d367a3aaa9ab4ef95402c3ea47a481edffb77a09d0a124edaf. 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/5b11133f-8a96-4f78-8bd4-8277ba18e2c0.json and https://artists.proofprofile.net/proofs/artist/5b11133f-8a96-4f78-8bd4-8277ba18e2c0.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 0xd9395d342f0225041f3a683be9f5527513243d4a806c0f5ebbddd31586235962. 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/22DnBQIIXFPJNRGuNjWlSg.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/22DnBQIIXFPJNRGuNjWlSg.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d048f948016e79c0908cceae6843b464d96221eaadac3e7ccef270e5d8c15f9. 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/48HelMaBXoGa2UxE6nDlqX.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/48HelMaBXoGa2UxE6nDlqX.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc68f65ca8c142ce9bd86694ef939b0325452e46714a692b228a7a71ee6f6a64b. 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/3w5lH18VTgWpVpXd5im236.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/3w5lH18VTgWpVpXd5im236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50566ca92f8d3914a67b38a9b3a0fd8dd0d8e0fe45faffa86b3b3ffa8e86e8f4. 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/3AxOIDbfsIUSsuWfUdkvOs.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/3AxOIDbfsIUSsuWfUdkvOs.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbac7dc853376bac9330564932350b66111c08157499c2a9f61d42bfe6ec55f2. 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/2x0xHVVubm4lwhj86pXTbJ.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/2x0xHVVubm4lwhj86pXTbJ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f34fd53501bdfccc568183fe0fc847d7fde38173a222403f0d999380c3c4d65. 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/3Zna7xAo6NA9PFANRLs01F.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/3Zna7xAo6NA9PFANRLs01F.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65ed2761e3b6951c711a210a20006193c395de70a71064c68e7b7ec6f3987854. 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/2WcC9PJhaodcugn4vv18Ur.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/2WcC9PJhaodcugn4vv18Ur.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2313835556ac1cf970a3ef1295af67c7a7da90efa62727abdb38b0587a9694fe. 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/0CbCEb1iHutNiK7fivpjrF.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/0CbCEb1iHutNiK7fivpjrF.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb71f6469aa15914d58a570b1f6dc1e49229f7db7c7a90a9b49d57c647d73923b. 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/66FJ7PapGRfnb5jovSk4Nn.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/66FJ7PapGRfnb5jovSk4Nn.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x702b39a82ade8372e94725f14e95ae640bb64fbdbe1e13da2c93dc02142a2857. 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/3rjrO4GwDrGG0WSPFnbfTc.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/3rjrO4GwDrGG0WSPFnbfTc.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc1fb86f302f3f2cf66ddc49eb8882c50d35d097d789c352094edd7c9343b543. 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/6BCDXhhP9vls0P71mFABKW.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/6BCDXhhP9vls0P71mFABKW.
{"copyright_id":"0xd1642639d69f0fea65212aa1d3ffea40ca913b23b283cc3d41cd22a0b9133e09","isrc":"USA2P1499045","name":"Nerds on Mushrooms","registered_at":"2026-06-16T21:02:24Z","spotify_id":"7oPKKgGGVkQqqCC63iGoXp","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1642639d69f0fea65212aa1d3ffea40ca913b23b283cc3d41cd22a0b9133e09. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T20:26:13Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7oPKKgGGVkQqqCC63iGoXp.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/7oPKKgGGVkQqqCC63iGoXp.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45ab94c8fd675c406555c82fbb6d464c4e1c8b851ea2bb10786dc794345ccde3. 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/5QeFnVud8IPrPTITXCZb6K.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/5QeFnVud8IPrPTITXCZb6K.
{"copyright_id":"0x7fbd60b34facb0c9026521706203fc4905ad289faeed76fdbc1d670f482098b4","isrc":"USA2P1499047","name":"Where Do I Belong","registered_at":"2026-06-04T15:42:38Z","spotify_id":"0hIcAqQSX3NdYvfLILXTKh","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fbd60b34facb0c9026521706203fc4905ad289faeed76fdbc1d670f482098b4. 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/0hIcAqQSX3NdYvfLILXTKh.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/0hIcAqQSX3NdYvfLILXTKh.
{"copyright_id":"0x7f1847a21f5c323226d40447145f64b5b2ed488a345f44edd60382cc18acbeb2","isrc":"USA2P1499048","name":"Astrix on Mushrooms","registered_at":"2026-06-07T06:21:14Z","spotify_id":"1kpIEEwDGWRLBUHcbukM4L","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f1847a21f5c323226d40447145f64b5b2ed488a345f44edd60382cc18acbeb2. 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/1kpIEEwDGWRLBUHcbukM4L.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/1kpIEEwDGWRLBUHcbukM4L.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc557f0e6ea72bcdcd08717b3055d3be568309d925f54e2d91017d203ecf40b3. 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/5RmNA8hB4LHJVIke5bZJgt.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/5RmNA8hB4LHJVIke5bZJgt.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb54fb07fa9ff0d7ac1984499ecf8b711b88dd7b2c3242a74d6eed249a1e08e5. 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/7BmZAtjsd2E8TLboC7VPPd.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/7BmZAtjsd2E8TLboC7VPPd.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x743901ca43ba19eb71c24af0a82fc127ed8e6437d79a34be2c7e9d2b6ff13346. 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/3S8iaI9r3hsbpnWrNpv87I.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/3S8iaI9r3hsbpnWrNpv87I.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf995ca3b3034f10d6c8b3bb81312f9480ae113f5239aae974542b63c30784426. 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/26OaqyfQLXZ8nUAnwUkfgf.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/26OaqyfQLXZ8nUAnwUkfgf.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33c9f9fd648c79a2c2b899aecd98133b1f5c1fdc78e61d8b341f895009a508fd. 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/7esSS9k4L8a1DXE38l1AI9.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/7esSS9k4L8a1DXE38l1AI9.
{"copyright_id":"0x11266e5e6ae4cb6d1f766dada09db7c4fc583574fcb3e9ecadcc31021ac0b5cf","isrc":"USA2P1499054","name":"Kipod (Riot Remix)","registered_at":"2026-06-09T06:00:41Z","spotify_id":"2YOkYKtII7wtr1gxowhn5h","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11266e5e6ae4cb6d1f766dada09db7c4fc583574fcb3e9ecadcc31021ac0b5cf. 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/2YOkYKtII7wtr1gxowhn5h.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/2YOkYKtII7wtr1gxowhn5h.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37dae25a2a87fc4298d7c6a5f760878b7a22c2a4885dce98276be02d35c8598a. 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/15GewmO3Kpr1YNfP9fFI5u.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/15GewmO3Kpr1YNfP9fFI5u.