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 0xf2911160efd9de7187b04a87dc25fde64a29d33f2c37a66c892dd64c13914593. 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/0f8c446d-f7ef-4475-9c65-bd802796fe9d.json and https://artists.proofprofile.net/proofs/artist/0f8c446d-f7ef-4475-9c65-bd802796fe9d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0xa9d9600d5f3a1149eff8f9cdcd5a0810b5c47a3780d431afedf2d5be3ada5d2a","isrc":"TCACS1607076","name":"Summer Love","registered_at":"2026-06-04T09:25:38Z","spotify_id":"6mLNU3uGKZ1fLcJv9J1u7G","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 0xa9d9600d5f3a1149eff8f9cdcd5a0810b5c47a3780d431afedf2d5be3ada5d2a. 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/6mLNU3uGKZ1fLcJv9J1u7G.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/6mLNU3uGKZ1fLcJv9J1u7G.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd10c04825146b23a4807fade51def333bcd336bb090f163607a39cc1159e7f44. 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/2pAntmbpoJMCd3D2r2aQTE.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/2pAntmbpoJMCd3D2r2aQTE.
{"copyright_id":"0x2652b7d90df38d55dce37613e1a02032b86deabf7036d0927a23a0da8d48850b","isrc":"TCACS1607080","name":"Show Me (feat. Kari Faux)","registered_at":"2026-06-10T03:27:50Z","spotify_id":"4FwEvtKZVkoJZVFC431Zu6","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2652b7d90df38d55dce37613e1a02032b86deabf7036d0927a23a0da8d48850b. 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/4FwEvtKZVkoJZVFC431Zu6.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/4FwEvtKZVkoJZVFC431Zu6.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54e43c4334726fe90951698835fdb395628bd4e0adff8c036760a1be98641a88. 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/47yB12k2uZtaLSwHVdszhH.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/47yB12k2uZtaLSwHVdszhH.
{"copyright_id":"0x0feadfae2c1cbc8b0408413de72d4a595ea621bcd7261ed6593b75a7fa3806c9","isrc":"TCACS1607083","name":"Feel Good (Interlude)","registered_at":"2026-06-17T04:02:47Z","spotify_id":"7xTAbX16GzYXPbShCRLDTY","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0feadfae2c1cbc8b0408413de72d4a595ea621bcd7261ed6593b75a7fa3806c9. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T20:29:25Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7xTAbX16GzYXPbShCRLDTY.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/7xTAbX16GzYXPbShCRLDTY.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11fddd51c6ce9639bc5d8182a34eed0c4c08adc5f80ee33ff0ae550154cf420c. 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/253Sq7utuR9vchbNWyjyE4.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/253Sq7utuR9vchbNWyjyE4.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x416feac8b326261086c2c538f48a3fcc402d08c347eae88546e7a388b0624794. 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/0cQILHSMfwrqKOrUfndmKC.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/0cQILHSMfwrqKOrUfndmKC.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa02794204e5825043e32faa59fba5e2b2f48ca62f36b0b156822dced1808a6d4. 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/12TggfP4g9HJQgEGGw67CB.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/12TggfP4g9HJQgEGGw67CB.
{"copyright_id":"0x35a5bb754d79d78c15f10169f3b9795e4d42a9d43eac4f2c1a3ec6c38fcd0345","isrc":"TCACS1607088","name":"Swang My Way","registered_at":"2026-06-06T16:41:53Z","spotify_id":"6QrYnkQKFU7eXaG2ozHIHW","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35a5bb754d79d78c15f10169f3b9795e4d42a9d43eac4f2c1a3ec6c38fcd0345. 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/6QrYnkQKFU7eXaG2ozHIHW.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/6QrYnkQKFU7eXaG2ozHIHW.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c2caa6965761e36c47ab53a6e66ddad3d797362a9959dcc734f899ee1f2e466. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3RhEOUwqyGU0nKZ0AYgWSe.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/3RhEOUwqyGU0nKZ0AYgWSe.
I Love You More Than You Know (feat. Childish Gambino)
{"copyright_id":"0xdaa6085d8d7defa425ae3a5b68d338f263cd7a5370e77c0604e47e7a9a0bc831","isrc":"USRC12201804","name":"I Love You More Than You Know (feat. Childish Gambino)","registered_at":"2026-06-04T16:16:57Z","spotify_id":"0oXOnlYymBNd7WtRwuMkRy","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaa6085d8d7defa425ae3a5b68d338f263cd7a5370e77c0604e47e7a9a0bc831. 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/0oXOnlYymBNd7WtRwuMkRy.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/0oXOnlYymBNd7WtRwuMkRy.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5f43298adea6824ee6793eea9296e8cc5883c38176f8a4ba47dfbf589430ead. 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/0dAbyor9LsAJjT0Nj67b9a.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/0dAbyor9LsAJjT0Nj67b9a.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcdac71adbb46dc468641c0899bf11c88d927a5e1abbb30faf87e7543421718f. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T20:41:23Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1m4Pu5tc9qQC2qRKM4AO16.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/1m4Pu5tc9qQC2qRKM4AO16.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84dafd3da532ce28207d8402556c863c2ffed90ef50a815286859302ee1723f6. 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/7AY5raqt9cEligkpFETuAa.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/7AY5raqt9cEligkpFETuAa.
{"copyright_id":"0x558610dd2680367dbae73fd6694a282518fea4b58bf2ff83a7e6ac40c6c2c75f","isrc":"USRC12103054","name":"Soakin (feat. Gwen Bunn)","registered_at":"2026-06-06T16:42:27Z","spotify_id":"2vPElKzVaK4TNqXU0CIIBf","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x558610dd2680367dbae73fd6694a282518fea4b58bf2ff83a7e6ac40c6c2c75f. 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/2vPElKzVaK4TNqXU0CIIBf.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/2vPElKzVaK4TNqXU0CIIBf.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c2caa6965761e36c47ab53a6e66ddad3d797362a9959dcc734f899ee1f2e466. 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/0b4TkAxl2s7QsK9pPSDWtZ.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/0b4TkAxl2s7QsK9pPSDWtZ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ab0c6a7d09a58b4c96c521b8e0133d369fc6197fdefc2d8b46f6492ee8d8953. 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/5ivM6Xmt8FaQEeTHGJ4kIi.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/5ivM6Xmt8FaQEeTHGJ4kIi.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdecfc26da97258e3bb7a16a875779925f309f09df4eec425904d479d703dc522. 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/4XcTglvquJZQUOn2tiCUQh.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/4XcTglvquJZQUOn2tiCUQh.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03440aa21ee52546a064db212d55042ebb98681e3e385471061abc6bf85e6838. 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/4ZUlZUPcXZaEgTkynvV0Ez.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/4ZUlZUPcXZaEgTkynvV0Ez.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cd928801b76c1a13767ea8425fa295c837220a5f8f8d744c4904c658cfde4c6. 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/23o3UmNwyajKyX9RLdKsHs.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/23o3UmNwyajKyX9RLdKsHs.
{"copyright_id":"0xb5b27e2edd0e5dac953d34a1caaa2a3d9820411ffe3a98a811cdc2cc12a9b020","isrc":"USRC12202216","name":"KEMET (feat. Saba)","registered_at":"2026-06-10T03:26:58Z","spotify_id":"6ri6nWRaKb9aBagIoI5hfg","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5b27e2edd0e5dac953d34a1caaa2a3d9820411ffe3a98a811cdc2cc12a9b020. 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/6ri6nWRaKb9aBagIoI5hfg.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/6ri6nWRaKb9aBagIoI5hfg.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08f6122ace0699d0ae35eb26ff4c70faf2a9cd761978713e740331755cff9f20. 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/2s4nq6VfWDPglDvVbtgo4v.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/2s4nq6VfWDPglDvVbtgo4v.
{"copyright_id":"0xdaa6085d8d7defa425ae3a5b68d338f263cd7a5370e77c0604e47e7a9a0bc831","isrc":"USRC12201804","name":"I Love You More Than You Know (feat. Childish Gambino)","registered_at":"2026-06-04T16:16:57Z","spotify_id":"3xfz3yzwXhSQCSvJXoM7fY","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaa6085d8d7defa425ae3a5b68d338f263cd7a5370e77c0604e47e7a9a0bc831. 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/3xfz3yzwXhSQCSvJXoM7fY.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/3xfz3yzwXhSQCSvJXoM7fY.