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 0xd8af0049c1a118808205a9f426f7f8cf600527df70b69d94f9c9e518495e2587. 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/1ddebf63-4743-4ea6-bf70-013982ffbba3.json and https://artists.proofprofile.net/proofs/artist/1ddebf63-4743-4ea6-bf70-013982ffbba3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0xb2ebd4e491170c7418b6ef971be7ef9e3cff9197752a641eb510d45ca0ebfc98","isrc":"BKF5C2400001","name":"THE BOX MEDLEY 7","registered_at":"2026-06-04T14:57:07Z","spotify_id":"2UiNcKrl7fbTClesb1ppom","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 0xb2ebd4e491170c7418b6ef971be7ef9e3cff9197752a641eb510d45ca0ebfc98. 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/2UiNcKrl7fbTClesb1ppom.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/2UiNcKrl7fbTClesb1ppom.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6bdf2ac8e14bc4a862e3606858408a29651ffb0604f556e0e9dc175bc507868. 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/7IFsTX5H1sWcEl8joV0IdD.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/7IFsTX5H1sWcEl8joV0IdD.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x603d1d82d704ee614269df815cc6f5abe2773953a1be17866b80c18ec249f721. 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/507tluWzOtxx58Kb13L9qu.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/507tluWzOtxx58Kb13L9qu.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f78258796e0f1b0b6701627caa2bef9c0469601ded68e42ac96f7d7e441d324. 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/35djHlD5VERjzdKzFknuUs.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/35djHlD5VERjzdKzFknuUs.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x591719174d69e887e182ca296a94234c8e39b630cd3ed68858b28e449c84aa65. 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/5qSfZIZgr3aj7BZ7xegHLs.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/5qSfZIZgr3aj7BZ7xegHLs.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70bdd6bdbdb8d1588b9b799fd5b1684b5f723a2b6574d88f6a8283be320444d7. 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/7pvJjTKoTnAy96nLNVr8zY.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/7pvJjTKoTnAy96nLNVr8zY.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb484bdac2dc4c562a0a14a38baacf6f83d2d34f17f2b48da172370afb499e2f. 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/2A9vUI0voJJ4q46BtRVtHq.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/2A9vUI0voJJ4q46BtRVtHq.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ee5414cf376213c842748b7864f23c64984a5060e023200834e713ae9620899. 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/46qHgbF1rORAXzwzSU5vbt.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/46qHgbF1rORAXzwzSU5vbt.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x967fc418a760adda0a92085d076b111327f0461f575505d40496678b87217675. 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/3BigeJqffIZ9N8eWH6eEVU.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/3BigeJqffIZ9N8eWH6eEVU.
{"copyright_id":"0x52d401dff62e3e915f570f20fae7a367875b9debfe8ab969bcb0b502ca2c94ee","isrc":"BXIV82129434","name":"The Box Medley 2","registered_at":"2026-06-02T01:17:32Z","spotify_id":"6MEDqys4CFyW9Y95LR6qGC","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52d401dff62e3e915f570f20fae7a367875b9debfe8ab969bcb0b502ca2c94ee. 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/6MEDqys4CFyW9Y95LR6qGC.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/6MEDqys4CFyW9Y95LR6qGC.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x599448be6a43b5fef929795896aef3cd7b376c4dfcc9e822d06a674947715857. 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/1VVJKsow0pKAA46FD8akkr.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/1VVJKsow0pKAA46FD8akkr.
{"copyright_id":"0xbc666db4250d1c15079fda7abd20b82c63de1c8faca4dcd91ef3c0fbf97ef481","isrc":"BXIV82156238","name":"SÓ FÉ","registered_at":"2026-06-04T14:04:45Z","spotify_id":"4N9tzwZlLNQ9o0rpKOfihZ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc666db4250d1c15079fda7abd20b82c63de1c8faca4dcd91ef3c0fbf97ef481. 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/4N9tzwZlLNQ9o0rpKOfihZ.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/4N9tzwZlLNQ9o0rpKOfihZ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49b57da01d0c27b61391631b5bc5ebceab5591b95db7b308d1f65763f55fb09d. 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/4HUaEW97kTPeKOL6pN9cuD.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/4HUaEW97kTPeKOL6pN9cuD.
{"copyright_id":"0x0f751ab7d8d8559ab6be2f48cf9dfea2ca135a2a367f27000392372694f7bd8a","isrc":"BKF5C2400009","name":"THE BOX MEDLEY FUNK 3","registered_at":"2026-06-04T06:38:01Z","spotify_id":"29GPtRKtxQhHWB2dDKx8uN","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f751ab7d8d8559ab6be2f48cf9dfea2ca135a2a367f27000392372694f7bd8a. 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/29GPtRKtxQhHWB2dDKx8uN.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/29GPtRKtxQhHWB2dDKx8uN.
{"copyright_id":"0xd5fe7b60d74290322332144afdc8545f4ad2e0981dea3612b0b05bb5e506c427","isrc":"BKTBX2400003","name":"THE BOX MEDLEY FUNK 4","registered_at":"2026-06-01T08:46:17Z","spotify_id":"2EMEUDqh1JuZabORVw1KkX","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5fe7b60d74290322332144afdc8545f4ad2e0981dea3612b0b05bb5e506c427. 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/2EMEUDqh1JuZabORVw1KkX.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/2EMEUDqh1JuZabORVw1KkX.
{"copyright_id":"0x04c71361f134f0558b60a7cca94a5782a17e2d2ffcf301cc95f04de81ec00d57","isrc":"BKTBX2500001","name":"THE BOX MEDLEY 9","registered_at":"2026-06-04T05:38:49Z","spotify_id":"3z4ObCLMtPlkRGSd0VmTo5","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04c71361f134f0558b60a7cca94a5782a17e2d2ffcf301cc95f04de81ec00d57. 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/3z4ObCLMtPlkRGSd0VmTo5.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/3z4ObCLMtPlkRGSd0VmTo5.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8092f88a2a17284ebbfdd64ec6930a0ded247c3ef04301bf51835c406290629. 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/6isHalUdU4dVvJrSa7bfKK.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/6isHalUdU4dVvJrSa7bfKK.
{"copyright_id":"0x894c32687ecd2f4cca43dabc666c5ca678bb3b7656842ddce9c8f2f7652c3bfb","isrc":"BKTBX2400005","name":"THE BOX MEDLEY FUNK 5","registered_at":"2026-06-01T16:51:09Z","spotify_id":"5B5m0mNbKG4RqAglA5PRM0","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x894c32687ecd2f4cca43dabc666c5ca678bb3b7656842ddce9c8f2f7652c3bfb. 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/5B5m0mNbKG4RqAglA5PRM0.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/5B5m0mNbKG4RqAglA5PRM0.