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 0xaa5bc12af9e5ff4cfee46f1186b7cefce576382133c05860db44df50ebde4804. 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/27bd4f0b-5177-4b3a-af9e-bd8751295fc1.json and https://artists.proofprofile.net/proofs/artist/27bd4f0b-5177-4b3a-af9e-bd8751295fc1.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 0x4d712db49ca9e4ef6b38d2c46d991daa9c1e13df1a60293802d507c1274a3dde. 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/0LcJjIdLkioUTfKNhTCjLg.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/0LcJjIdLkioUTfKNhTCjLg.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x315bffe496a72606eaade0a866ee91736039baf6638dc4adbde2a30a55c846dc. 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/1hoYo6Pf7fcyb0fN3yjIbR.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/1hoYo6Pf7fcyb0fN3yjIbR.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9df7aa6b5930b8cc4661c4153ff3093cedb9c29fad24e31f5aa933d18b62bcf3. 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/0iiSzNS12kGRvViaBTnPK0.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/0iiSzNS12kGRvViaBTnPK0.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x548af07ced690e5b7b62b9db387ed6b5fa610d98bbce998318061be7263f10e0. 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/6AnjxXjgCZb3J3irm1UQZY.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/6AnjxXjgCZb3J3irm1UQZY.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10b01217d8efc961f2b413cc983d1cc02c0551936f0f2a4fa023070252dc25ea. 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/1K6OWYig9qAucJgkajkgHv.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/1K6OWYig9qAucJgkajkgHv.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01ea93c1812c884286414bb833e4f2898507fe96d7eb8f5bd4427dbd7d82b789. 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/7qjF1j0sMTLcmiTKXwVh09.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/7qjF1j0sMTLcmiTKXwVh09.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1d57f3737a8949d10aaab9c4ef310104bde1dc5f0a60c24c2c20ef3dc72fcc7. 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/4F1CShJn8SVcnHyamSYe5E.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/4F1CShJn8SVcnHyamSYe5E.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa397b1db415349d645b05e33655d3cafc277da4a530064155aeb867ae44a45e9. 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/2RTRCEIDACwxuC8ukjrIb8.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/2RTRCEIDACwxuC8ukjrIb8.
{"copyright_id":"0xc699151dda352eee231a023cc99b03d8eb8eda69dce018e009680a7d30a1a7ed","isrc":"FR2X42111753","name":"Doppelgänger - Robot Koch Remix","registered_at":"2026-06-26T16:21:22Z","spotify_id":"0gWDNrT1tTkXFjePSc1VW3","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc699151dda352eee231a023cc99b03d8eb8eda69dce018e009680a7d30a1a7ed. 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/0gWDNrT1tTkXFjePSc1VW3.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/0gWDNrT1tTkXFjePSc1VW3.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x608852f82b87c26383e8d7a37e2502914509fe64e9cc38c18f0c77ec870e8648. 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/0DxlxfpKJ9WsrZ9Rkh0ku0.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/0DxlxfpKJ9WsrZ9Rkh0ku0.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee6aab9430ff9677c77e8d2eac7ea646f84fc4983ef91f681c1befafdac83866. 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/5i2WHUsr0aUxbOXaWSCqHt.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/5i2WHUsr0aUxbOXaWSCqHt.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1822fd719234da8afa94dae2ca14751c93a4aff09580fd63d1f73cad678e57a2. 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/7d67S9ZdSj7oEbERULAD8z.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/7d67S9ZdSj7oEbERULAD8z.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4284c6ac4070cc54b2b43fd5469b8d2111e48f306605cfdf92deb71663bbbcf3. 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/1w9ETODrw6bcLWzDgOIk8G.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/1w9ETODrw6bcLWzDgOIk8G.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9890ad262e972449d0fac394174223a850ecd786d035a3387bd4be485a13befb. 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/4ckyplzuMVcvbm6ayMpCek.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/4ckyplzuMVcvbm6ayMpCek.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc097891c0382a0b412b25b19a7676f2179c3d6760b8d8e534a3e3e76d0b0cbe3. 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/7Hj6dqsIszlc6dCHrizzh7.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/7Hj6dqsIszlc6dCHrizzh7.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf69c86de94bb6a6ac25ba5437e1a7f499cad222d4a8b06f9dee43055cf67579. 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/4vMoJ4jmErWIXWdePFfCJ7.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/4vMoJ4jmErWIXWdePFfCJ7.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7911400d0af332d902f5d5e1737dd7f02cd8444220234158432bfbad4de65237. 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/7hPVkLQTB3E5PN017IFWDf.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/7hPVkLQTB3E5PN017IFWDf.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ba7f490ecce72697d81381154b33d25e98b9ee4977cfc03aad412751db7a9b7. 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/4FVyt4vuxj3KHMf3pyiHL6.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/4FVyt4vuxj3KHMf3pyiHL6.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e15e7ee1ff58f3aecf79645fe814a05ab5ed879440a34523bcee33abba57f3b. 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/2k7a0ix6g2gO2PDMKpRA6w.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/2k7a0ix6g2gO2PDMKpRA6w.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd32218207d9368bd46ff7dc976d5d585b279a2fa616c76e7dfb8a14eaf47de7b. 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/5OFZ6RKWfFErVx91OwgSW9.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/5OFZ6RKWfFErVx91OwgSW9.