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 0x6df6f3b062926b87cf1dbfa4e41f8a0de00c6de9b6cd4d49cdca1dfde987a9b2. 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/4e714494-c2d3-432e-90c1-5a9f2a4c058d.json and https://artists.proofprofile.net/proofs/artist/4e714494-c2d3-432e-90c1-5a9f2a4c058d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0xa898c28b36cfd5696e10d0d8deeca68ab89e138f8a9d3eae4d46b7070d7a9651","isrc":"ES5022401986","name":"UNA PENA (skit pucho)","registered_at":"2026-06-05T18:49:22Z","spotify_id":"7io41obqhtWDesV9wpMJLP","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 0xa898c28b36cfd5696e10d0d8deeca68ab89e138f8a9d3eae4d46b7070d7a9651. 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/7io41obqhtWDesV9wpMJLP.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/7io41obqhtWDesV9wpMJLP.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bc83aa2cb7d30f6322ebc85673c10ae83f5c33f4afa5280757744361e972b0f. 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/1jI6OoAt3LM9sokYRDs5mP.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/1jI6OoAt3LM9sokYRDs5mP.
{"copyright_id":"0x91c624bd9facade4b544c74abf6bc2195a8363ad1548c4f777fd0b877efd27d4","isrc":"ES5022401988","name":"MAIKEL NAI","registered_at":"2026-06-05T04:37:29Z","spotify_id":"11hGogL8HfgSTbIkSZ7JQH","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91c624bd9facade4b544c74abf6bc2195a8363ad1548c4f777fd0b877efd27d4. 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/11hGogL8HfgSTbIkSZ7JQH.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/11hGogL8HfgSTbIkSZ7JQH.
{"copyright_id":"0x45803c7077b925e3f899719a41d5b3eef80367b2aca6fbca72aabd45631753ba","isrc":"ES5022402002","name":"LAS MAGIAS DE MI MAMA","registered_at":"2026-06-06T06:56:37Z","spotify_id":"1bMPSlsC2jyJidqJpttKRt","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45803c7077b925e3f899719a41d5b3eef80367b2aca6fbca72aabd45631753ba. 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/1bMPSlsC2jyJidqJpttKRt.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/1bMPSlsC2jyJidqJpttKRt.
LA PLAZA ARGEL (feat. La Tana & El Remache)
{"copyright_id":"0x9849fbe500de196cd7c893c6931aa655f92aafe5d178feb0a99ba14ad9d62aea","isrc":"ES5022401989","name":"LA PLAZA ARGEL (feat. La Tana & El Remache)","registered_at":"2026-06-04T14:17:22Z","spotify_id":"68NEykzP6Ik4eK4N6lYhDO","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9849fbe500de196cd7c893c6931aa655f92aafe5d178feb0a99ba14ad9d62aea. 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/68NEykzP6Ik4eK4N6lYhDO.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/68NEykzP6Ik4eK4N6lYhDO.
{"copyright_id":"0x9455e20241ae5cb5c0186ef2367988c1e6d34b428f8a0d2dbe40afffc7f07a88","isrc":"ES5022401990","name":"LOS GITANOS SONAMOS ASÍ (feat. Tía Ana)","registered_at":"2026-06-04T15:17:37Z","spotify_id":"51h7yaGyXfRaRdEDYXG3AT","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9455e20241ae5cb5c0186ef2367988c1e6d34b428f8a0d2dbe40afffc7f07a88. 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/51h7yaGyXfRaRdEDYXG3AT.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/51h7yaGyXfRaRdEDYXG3AT.
{"copyright_id":"0xfdade69212ca6e16ee63ae73f2b464f5ba5187f25a173971f2a1bec098087d19","isrc":"ES5022401991","name":"QUE ME RECONOZCAN (skit yerai)","registered_at":"2026-06-06T13:46:21Z","spotify_id":"566wIQSIk0dbDtSFIakQZ5","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdade69212ca6e16ee63ae73f2b464f5ba5187f25a173971f2a1bec098087d19. 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/566wIQSIk0dbDtSFIakQZ5.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/566wIQSIk0dbDtSFIakQZ5.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10f519225d45629006a9e3f3956d47f52ab68cadfa724849328963733df6ff02. 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/7LEdeh88EpW8GjIs28ZtTu.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/7LEdeh88EpW8GjIs28ZtTu.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68e6af72c096f8bd4adae422677b2c1fcd740073be923d6ad5808aa807bb541e. 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/4y1Sg9wghGaGVAeniH59jQ.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/4y1Sg9wghGaGVAeniH59jQ.
ES TANTO LO QUE ME CALLO (feat. Remedios Amaya & Farruquito)
{"copyright_id":"0x2494d59437480e38fbfddbe7cb3d73bc4d1b05a7a7e74b6ba722f84d47af8b01","isrc":"ES5022401994","name":"ES TANTO LO QUE ME CALLO (feat. Remedios Amaya & Farruquito)","registered_at":"2026-06-05T14:17:39Z","spotify_id":"0w3BIYhj1jS0QbAkOEg1qz","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2494d59437480e38fbfddbe7cb3d73bc4d1b05a7a7e74b6ba722f84d47af8b01. 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/0w3BIYhj1jS0QbAkOEg1qz.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/0w3BIYhj1jS0QbAkOEg1qz.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d4463fd467fe611d7967ac30df5f51087d79402ec8a4b92f861e826568352c9. 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/4PlYrvxUGmAEN2mSXf6XbX.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/4PlYrvxUGmAEN2mSXf6XbX.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6086b63244affbb939ed1bf27bca74f76297a88ecc03f96080872dd87818ee8b. 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/5sw92JihF6LFO9itzpLCwe.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/5sw92JihF6LFO9itzpLCwe.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9adb38b22b2d42fa998b8e15f4bfb1743771d905362ec70db7e63aab5261d3be. 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/1Ytc67W4Rf6eh0us5itbgE.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/1Ytc67W4Rf6eh0us5itbgE.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe67cd815b600c3953762d448a25f87b0e7f8406a2017526c053deca24e54ebb5. 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/5aqHtT3MtNqNNHj7O8rMxF.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/5aqHtT3MtNqNNHj7O8rMxF.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f85b55340f296b51f831772018b57ff7e208bd4cf1f8bc07f90f83d6d896ba5. 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/6b2BYOvTZOhXf9PFQHJPk8.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/6b2BYOvTZOhXf9PFQHJPk8.
{"copyright_id":"0x6eb115d3391b827d98246b3e6116c3d5c2bf831efc801a7bf60dafb4bbb44e39","isrc":"ES5022401999","name":"MALAGUEÑA FINALE","registered_at":"2026-06-06T06:59:12Z","spotify_id":"3mMAefVrHyZITaHJxTasyy","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eb115d3391b827d98246b3e6116c3d5c2bf831efc801a7bf60dafb4bbb44e39. 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/3mMAefVrHyZITaHJxTasyy.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/3mMAefVrHyZITaHJxTasyy.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47d9b09d198d7d701ec494ebd7dffb24d556e6a0105b9dbdc2cb28eacf48e057. 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/5SrWexqaxqtUwjCHkgJqIM.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/5SrWexqaxqtUwjCHkgJqIM.
{"copyright_id":"0x5ed974c59845bb6c708832af85ed14950063d50bb0cf7f9c4b9de01317ad3db1","isrc":"USUM72303303","name":"Mi Condena","registered_at":"2026-06-10T18:46:33Z","spotify_id":"0bfJQRX3TbPRBVFEAFzfCj","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ed974c59845bb6c708832af85ed14950063d50bb0cf7f9c4b9de01317ad3db1. 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/0bfJQRX3TbPRBVFEAFzfCj.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/0bfJQRX3TbPRBVFEAFzfCj.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ed974c59845bb6c708832af85ed14950063d50bb0cf7f9c4b9de01317ad3db1. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/213Okb79tXfpI5na1mS0wx.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/213Okb79tXfpI5na1mS0wx.
{"copyright_id":"0x6a7453713bd9cb70f1eac49fa9649d7e5b3df856d64e3058d239c7943f1aef52","isrc":"QMFME2453472","name":"Alegría del Vida - Live on V4M","registered_at":"2026-06-10T06:57:03Z","spotify_id":"6O68BWxCp7FYydTTqbx6q5","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a7453713bd9cb70f1eac49fa9649d7e5b3df856d64e3058d239c7943f1aef52. 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/6O68BWxCp7FYydTTqbx6q5.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/6O68BWxCp7FYydTTqbx6q5.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6092c98518cb9ae17968d9ae5d7cc909269b88a506898707d6870b86ae7ee005. 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/6dNDmnKrilb5cGLWUfRQ54.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/6dNDmnKrilb5cGLWUfRQ54.
{"copyright_id":"0x230ce6472f31c4da1b81c0fa20767597582d6b98d3ac4f5eef9410b88292f41c","isrc":"ESA081850529","name":"Me Haces Tanta Falta","registered_at":"2026-06-20T19:43:24Z","spotify_id":"4VGgh0AnAnpoliazXc2rfl","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x230ce6472f31c4da1b81c0fa20767597582d6b98d3ac4f5eef9410b88292f41c. 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/4VGgh0AnAnpoliazXc2rfl.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/4VGgh0AnAnpoliazXc2rfl.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x216e6447d79f0733e5818b55beb0d0c447ee2ea6f848491c4280508ed28dbab5. 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/2B682R62DIlUtZS10CgUop.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/2B682R62DIlUtZS10CgUop.
{"copyright_id":"0x77ff02faada63097f2e8db7eb4aaaa0981686868dd2fbadc1afcd23cff28e1d9","isrc":"ESA081850531","name":"Claro Que Te Imaginaba","registered_at":"2026-06-10T19:07:57Z","spotify_id":"4HNB0ugz2QfCJpzuU3w3uS","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77ff02faada63097f2e8db7eb4aaaa0981686868dd2fbadc1afcd23cff28e1d9. 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/4HNB0ugz2QfCJpzuU3w3uS.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/4HNB0ugz2QfCJpzuU3w3uS.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07288503d6333ef284dafe47671e45d31c4b695527420aec36d258b6c9078326. 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/7o5Dmh8RN1UfRLRjxrclGY.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/7o5Dmh8RN1UfRLRjxrclGY.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x419ea8a4632b5755f576dd9240605d020b9bd276555cff7b462ff3aa7872c293. 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/5GMOAIuOheeOkORXknZeWn.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/5GMOAIuOheeOkORXknZeWn.