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 0xd0ee741211520f3a19dbd880e55a05668ccac43ec13048dd604235958541a945. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/34594be5-5dde-4a8e-a023-47d25c82b89c.json and https://artists.proofprofile.net/proofs/artist/34594be5-5dde-4a8e-a023-47d25c82b89c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0x5f486742bbe8b302a6c37ad058f1b58a34cb2051472a54e05716cd6b1f572ddd","isrc":"QZTAW2487913","name":"Peaceful Sapphire Places","registered_at":"2026-06-22T17:36:51Z","spotify_id":"7e3W0QJvo8WD922FLABfpL","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 0x5f486742bbe8b302a6c37ad058f1b58a34cb2051472a54e05716cd6b1f572ddd. 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/7e3W0QJvo8WD922FLABfpL.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/7e3W0QJvo8WD922FLABfpL.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1df52ab0b5a791e59716373d77243c0900a1dc393814af7c1a704d1bc147c4f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/58d41YujlwjcLoZ2w9mMgh.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/58d41YujlwjcLoZ2w9mMgh.
{"copyright_id":"0x70400517d58e8f177518bf8027e54037800577ecb71b02e65ca7e26533e667fc","isrc":"QZNWX2471241","name":"Hearts of Passionate Desires","registered_at":"2026-06-20T18:01:05Z","spotify_id":"3nLvNxTiKyBjDRS3hw5PVx","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70400517d58e8f177518bf8027e54037800577ecb71b02e65ca7e26533e667fc. 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/3nLvNxTiKyBjDRS3hw5PVx.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/3nLvNxTiKyBjDRS3hw5PVx.
{"copyright_id":"0x6f46f2368576a25e7965f31a7705ceb1fb6b9d6c78d43d842e2ee0bbab384bdd","isrc":"QZNWX2471249","name":"Desires Inside a Mansion","registered_at":"2026-06-27T06:58:42Z","spotify_id":"5zsYDVjMVta2aS02OO5L5p","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f46f2368576a25e7965f31a7705ceb1fb6b9d6c78d43d842e2ee0bbab384bdd. 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/5zsYDVjMVta2aS02OO5L5p.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/5zsYDVjMVta2aS02OO5L5p.
{"copyright_id":"0x802dde667e5285a3c75950b832ff691f8d1d9a00c24304077e121fca76bd07d2","isrc":"QZNWX2471255","name":"Waiting for Blooming Season","registered_at":"2026-06-12T00:35:01Z","spotify_id":"0whgEquB0Ms5rMnXRQXFX3","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x802dde667e5285a3c75950b832ff691f8d1d9a00c24304077e121fca76bd07d2. 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/0whgEquB0Ms5rMnXRQXFX3.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/0whgEquB0Ms5rMnXRQXFX3.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb01a28b4653c094a746b74c6a424ca34149dd1339a4a6e136b1889830723711. 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/7L9DNoShbvBmRrJyiA1wPg.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/7L9DNoShbvBmRrJyiA1wPg.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9edf8fcaece106f7424027a844e9bc24d3a3508067ad079768ce9c4701745761. 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/2vTHsvoZkpnVA8PEJ53pOf.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/2vTHsvoZkpnVA8PEJ53pOf.
{"copyright_id":"0x56fefe4bc99158792912ff0539013df7a883dd4f065407bcfb3ccf347c96fd50","isrc":"QZNWT2414260","name":"Sleepy Flights","registered_at":"2026-06-28T04:26:34Z","spotify_id":"7uBK2jmG5AQAV6MMQkGWen","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56fefe4bc99158792912ff0539013df7a883dd4f065407bcfb3ccf347c96fd50. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7uBK2jmG5AQAV6MMQkGWen.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/7uBK2jmG5AQAV6MMQkGWen.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaa89bfe963210b2d44d1101b72c43bb6c4986366b46a49367e28e28a6d6fa46. 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/4YK2sWIdpKZJ7m256ONWdA.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/4YK2sWIdpKZJ7m256ONWdA.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a23e382e3283694cbd7bf3dd77b9858bd8d89989c546b40175bd411bd17664d. 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/29xECZ79H1f78Mz5RukaoI.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/29xECZ79H1f78Mz5RukaoI.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8efa540ad9d62df2e611b283c38e0caff225a6fc86696e3638b7c591fa306a2. 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/5L3tQ8r1Cb15Gk4Urvc77E.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/5L3tQ8r1Cb15Gk4Urvc77E.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20b09333ca3fd74baa6a53bbc83544a93075ab5f00a40b331611a8ef54afccf7. 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/3P2zyzgnys7SQ7SrH0lh2K.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/3P2zyzgnys7SQ7SrH0lh2K.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69cc014e0c0796c006cfd4fbd00398696539a2cf1aa4ce1d8f64b43b39721f40. 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/2RFtfwyFpR57vXn2SCwzH8.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/2RFtfwyFpR57vXn2SCwzH8.
{"copyright_id":"0x1902bae7866c7e9a45c848e9be143fd9f91ca153dcb7ed248a284c6cdda09c60","isrc":"QZFYY2473499","name":"The Last Fall","registered_at":"2026-06-25T05:37:48Z","spotify_id":"3BREqRzbHl6YCwCAPmHttP","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1902bae7866c7e9a45c848e9be143fd9f91ca153dcb7ed248a284c6cdda09c60. 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/3BREqRzbHl6YCwCAPmHttP.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/3BREqRzbHl6YCwCAPmHttP.
{"copyright_id":"0x8ab9e0bb234ffeb7569b6dbbd6fa869ada65190cf109dd7079c9b16424fac1c0","isrc":"QZWFQ2361578","name":"From Dream to Dream","registered_at":"2026-06-28T04:29:20Z","spotify_id":"3XGE2IqEeN8h8WGRrcQuIC","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ab9e0bb234ffeb7569b6dbbd6fa869ada65190cf109dd7079c9b16424fac1c0. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3XGE2IqEeN8h8WGRrcQuIC.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/3XGE2IqEeN8h8WGRrcQuIC.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9234954badbf14d73431ed12c049659ee2408b6f84f33c996ee10f786b70fbec. 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/2Bzz5BQ3sbX82QO4ip86Wd.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/2Bzz5BQ3sbX82QO4ip86Wd.
{"copyright_id":"0x8cfb1bb642d7dc1dadae10912880db6e348607bc08d31f6b3c631e313210ce90","isrc":"QZWFQ2361588","name":"Very Simple Sunset","registered_at":"2026-06-28T04:28:04Z","spotify_id":"0DYaajwYuwERaiXlBcQKp5","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cfb1bb642d7dc1dadae10912880db6e348607bc08d31f6b3c631e313210ce90. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0DYaajwYuwERaiXlBcQKp5.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/0DYaajwYuwERaiXlBcQKp5.
{"copyright_id":"0xa757b0401284b75dc83857ccb6cd57396cb35007ef3e670329a8ebf8a53a8ce5","isrc":"QZWFG2351317","name":"Natural Connection","registered_at":"2026-06-25T05:37:26Z","spotify_id":"0hoc0Rl1QkFWil3DqzwgbV","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa757b0401284b75dc83857ccb6cd57396cb35007ef3e670329a8ebf8a53a8ce5. 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/0hoc0Rl1QkFWil3DqzwgbV.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/0hoc0Rl1QkFWil3DqzwgbV.
{"copyright_id":"0x26b20f9a2b9322194ced0381bed17a026e543093d7fb11524e0c1b83b582fcba","isrc":"QZTBD2367464","name":"Blinking Star","registered_at":"2026-06-22T17:36:21Z","spotify_id":"4sSEwahWABDohQl1FCjyFF","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26b20f9a2b9322194ced0381bed17a026e543093d7fb11524e0c1b83b582fcba. 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/4sSEwahWABDohQl1FCjyFF.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/4sSEwahWABDohQl1FCjyFF.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7259566368e22ac0f95aa4997a70b281fc7f36c47727e8fd22dc275d2b34c9e7. 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/43Weu2gVL5ZeUbZPbgq4ww.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/43Weu2gVL5ZeUbZPbgq4ww.
{"copyright_id":"0x361f729e4d90cc856e4e9aabeffc2aabaaaaec5777936a219fc177436e3e837e","isrc":"QZTB52322457","name":"Clouds of Reflection","registered_at":"2026-06-07T11:20:17Z","spotify_id":"52ZitZLCyjlp2TGMcelEhK","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x361f729e4d90cc856e4e9aabeffc2aabaaaaec5777936a219fc177436e3e837e. 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/52ZitZLCyjlp2TGMcelEhK.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/52ZitZLCyjlp2TGMcelEhK.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bb6f099848a847f83e3d4b97b2194d477b52a289d9cb3c01c7759c05a0e232e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4s5QhnvnkCMJtHz7nI7tIJ.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/4s5QhnvnkCMJtHz7nI7tIJ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0b53d02d1c5ffb41a518201757404d595aa6a4babbe6467ff1a454115fb57f9. 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/3idc3qGoQDf0E6GoC2Zmw2.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/3idc3qGoQDf0E6GoC2Zmw2.
{"copyright_id":"0xa8f8b0cdbcd2be965a84517a7f008ab37acdff0c58da94c5993c4fc803fd0169","isrc":"QZNWW2396096","name":"Silent Conversations","registered_at":"2026-06-28T04:25:36Z","spotify_id":"7d33AKLXg5r0Bp9xJC7OSu","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8f8b0cdbcd2be965a84517a7f008ab37acdff0c58da94c5993c4fc803fd0169. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7d33AKLXg5r0Bp9xJC7OSu.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/7d33AKLXg5r0Bp9xJC7OSu.