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 0x73e17f788179aa70ef343ddccfba0fb8d1c244525baf741b1ebf6041e6c78bfc. 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/c6be23c7-6e63-4b80-bc9c-b1b4f0a19d31.json and https://artists.proofprofile.net/proofs/artist/c6be23c7-6e63-4b80-bc9c-b1b4f0a19d31.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0x36b09faf57ba497dda1388c39524c9e37e48ae6cb796fe632874cf60e2204245","isrc":"GBVHN2000010","name":"Here Comes The Sun","registered_at":"2026-06-07T06:24:32Z","spotify_id":"4ivpKWMMxBLTTpM2Q81VbJ","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 0x36b09faf57ba497dda1388c39524c9e37e48ae6cb796fe632874cf60e2204245. 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/4ivpKWMMxBLTTpM2Q81VbJ.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/4ivpKWMMxBLTTpM2Q81VbJ.
{"copyright_id":"0xeb7be6191ed4ffe992a4a6d638e16ded7fd6bfa614a0b03f6b2078c4d8972519","isrc":"GBVHN2000011","name":"I'll Be There for You","registered_at":"2026-06-05T16:09:02Z","spotify_id":"4YV0dYmHFCMrnWNG47IJVd","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb7be6191ed4ffe992a4a6d638e16ded7fd6bfa614a0b03f6b2078c4d8972519. 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/4YV0dYmHFCMrnWNG47IJVd.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/4YV0dYmHFCMrnWNG47IJVd.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43fd127627e3911f30e58c607e88145bce9d943bc0fd6b1db757b50849b6a736. 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/2ZCCWYPUyB5N2XrM0vPgbU.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/2ZCCWYPUyB5N2XrM0vPgbU.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3490386b87dfbe7b3cd02d9c9d85b116cba2eafe493e55cef217ada70082035. 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/18V1UiYRvWYwn01CRDbbuR.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/18V1UiYRvWYwn01CRDbbuR.
{"copyright_id":"0x87cb9e5813a3919aea32465d364bc3de169e47a56901706dbc87937d67ef4131","isrc":"GBVHN2000013","name":"Call Your Girlfriend","registered_at":"2026-06-07T12:27:47Z","spotify_id":"4TXQetQNngifAITPR5zSqx","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87cb9e5813a3919aea32465d364bc3de169e47a56901706dbc87937d67ef4131. 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/4TXQetQNngifAITPR5zSqx.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/4TXQetQNngifAITPR5zSqx.
{"copyright_id":"0xd1353cd6d13e77af231bc3f34bb166c1e639c15a416f4e5d4e8504bcce553792","isrc":"GBVHN2000014","name":"Happy Birthday (Dear Human)","registered_at":"2026-06-11T04:59:42Z","spotify_id":"6s9BHzkcwO9wuOSlkj0rO4","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1353cd6d13e77af231bc3f34bb166c1e639c15a416f4e5d4e8504bcce553792. 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/6s9BHzkcwO9wuOSlkj0rO4.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/6s9BHzkcwO9wuOSlkj0rO4.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6826036cbd2d921ca8478f8345fabad3d280154a69e36c81892266cc43b47b2f. 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/7c1svlMT29OriIDKxhNBXP.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/7c1svlMT29OriIDKxhNBXP.
{"copyright_id":"0x7c4ed35d42069386033ce81bac7bd696f09ef0b5c835396547f38dda584a4fb5","isrc":"GBVHN2000016","name":"Can't Help Falling in Love","registered_at":"2026-06-04T13:52:23Z","spotify_id":"2ZiW5TlmTuamrxzXLB2psv","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c4ed35d42069386033ce81bac7bd696f09ef0b5c835396547f38dda584a4fb5. 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/2ZiW5TlmTuamrxzXLB2psv.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/2ZiW5TlmTuamrxzXLB2psv.
{"copyright_id":"0xfb57bde5b1e71e8dc2818ec270c2bc93b09f6aca229c783e8c31cd75fd3bc777","isrc":"GBVHN2000017","name":"Don't Think Twice It's Alright","registered_at":"2026-06-10T15:51:20Z","spotify_id":"5w7T8mzEMbGsOusLoX9s40","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb57bde5b1e71e8dc2818ec270c2bc93b09f6aca229c783e8c31cd75fd3bc777. 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/5w7T8mzEMbGsOusLoX9s40.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/5w7T8mzEMbGsOusLoX9s40.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd72da4693bf61c0c685ee26b6c3597c22a454e04920d71c2aee52459b6547f76. 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/76boXeW2kk3oklzfK5cLwD.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/76boXeW2kk3oklzfK5cLwD.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09fff5a775f355412074b62c5674b3e63e3d2099367d3a2bce94e9bbaff2eb86. 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/6wf1JyR4jpGg767r34cO0w.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/6wf1JyR4jpGg767r34cO0w.
{"copyright_id":"0x241ea2db256f6f8510ed9b77a7d21a7eef3049f2f02abffb8386b4b442bff91d","isrc":"USA2P2265014","name":"The Snow","registered_at":"2026-06-06T22:38:53Z","spotify_id":"2GceN6DQQPAb3DfVG4fiz3","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x241ea2db256f6f8510ed9b77a7d21a7eef3049f2f02abffb8386b4b442bff91d. 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/2GceN6DQQPAb3DfVG4fiz3.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/2GceN6DQQPAb3DfVG4fiz3.
{"copyright_id":"0x1a11fd93d07a98a66f1bee87d647b4cd3bfa4ca2ef4eeaf0b50104a648face00","isrc":"GBFFM1479162","name":"Quiet Zone","registered_at":"2026-06-06T16:04:36Z","spotify_id":"0FYCSGWbKNx9NXF563slpT","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a11fd93d07a98a66f1bee87d647b4cd3bfa4ca2ef4eeaf0b50104a648face00. 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/0FYCSGWbKNx9NXF563slpT.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/0FYCSGWbKNx9NXF563slpT.
{"copyright_id":"0xb6e08f4bcbceaa66667139af1a5fbc94d3960dfae56ea9d875374bcbc7094113","isrc":"GBVHN2100018","name":"Lights Are On - Acapella","registered_at":"2026-06-04T09:47:24Z","spotify_id":"3mdr5873dpGlWZWIa6YWPK","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6e08f4bcbceaa66667139af1a5fbc94d3960dfae56ea9d875374bcbc7094113. 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/3mdr5873dpGlWZWIa6YWPK.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/3mdr5873dpGlWZWIa6YWPK.
{"copyright_id":"0x3d5d60b050175ae9c6af7007a0b2fc5da1651f0cf83a8fe25836e2a68704d1aa","isrc":"GBVHN2100016","name":"Lights Are On - Instrumental","registered_at":"2026-06-01T07:19:07Z","spotify_id":"322jQ92QZRnliN8VbQMsUh","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d5d60b050175ae9c6af7007a0b2fc5da1651f0cf83a8fe25836e2a68704d1aa. 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/322jQ92QZRnliN8VbQMsUh.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/322jQ92QZRnliN8VbQMsUh.
{"copyright_id":"0xd31a8fbd43560fd44be1d900df559b2b0a395ffce46a1f9ebbe64ae6109c1e4c","isrc":"GBVHN2100015","name":"Home - Slowed","registered_at":"2026-06-01T16:24:15Z","spotify_id":"3Cou9Rf87erNBpjWjTZZaZ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd31a8fbd43560fd44be1d900df559b2b0a395ffce46a1f9ebbe64ae6109c1e4c. 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/3Cou9Rf87erNBpjWjTZZaZ.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/3Cou9Rf87erNBpjWjTZZaZ.
{"copyright_id":"0xedc8bed5c49a0786090a122f0f70cc0a613e52a3b59fb3e1cb2fa53778ad861b","isrc":"US5ED2101000","name":"Acorns Fooling","registered_at":"2026-06-07T12:26:23Z","spotify_id":"5FPGkzGQKtljGEddjhjcWZ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedc8bed5c49a0786090a122f0f70cc0a613e52a3b59fb3e1cb2fa53778ad861b. 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/5FPGkzGQKtljGEddjhjcWZ.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/5FPGkzGQKtljGEddjhjcWZ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dd50b82a0b3bef7e7d9422560c96117818fcd8e5e40a64b45eb1bdb686d27d4. 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/5RKUztud1fb5UhO4gljjl7.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/5RKUztud1fb5UhO4gljjl7.
{"copyright_id":"0xea529120bade72f42ef74342409b81df201e000482028d0c57e3e2bbec684caf","isrc":"US5ED2101001","name":"I Want You In My Dreams","registered_at":"2026-06-04T12:39:41Z","spotify_id":"0EK8Rf1EmWEt8qPBHLlQEa","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea529120bade72f42ef74342409b81df201e000482028d0c57e3e2bbec684caf. 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/0EK8Rf1EmWEt8qPBHLlQEa.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/0EK8Rf1EmWEt8qPBHLlQEa.
{"copyright_id":"0x603af01727bacdfc828e0263beabe49b77de991a2a53afdd93a60d0d67950fb6","isrc":"USA2P2105995","name":"God Only Knows","registered_at":"2026-06-07T06:25:56Z","spotify_id":"31MwXSAGt4BErA3jITUf8m","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x603af01727bacdfc828e0263beabe49b77de991a2a53afdd93a60d0d67950fb6. 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/31MwXSAGt4BErA3jITUf8m.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/31MwXSAGt4BErA3jITUf8m.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3490386b87dfbe7b3cd02d9c9d85b116cba2eafe493e55cef217ada70082035. 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/2qPSa6HXjzwa9sLhNGpA1T.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/2qPSa6HXjzwa9sLhNGpA1T.