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 0xe95c6bc72a39beefd48578db633492aa3f432cba5626686c848d62a39696347d. 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/efb96f57-9790-4485-b4fc-1bb1d266cb2c.json and https://artists.proofprofile.net/proofs/artist/efb96f57-9790-4485-b4fc-1bb1d266cb2c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0x771fc316d62e71010b8d42de512a1dceebcf8f858920f76a841870442c53ee88","isrc":"ES5022301041","name":"BEJO #05 AFTER HOUR THE MIXTAPE","registered_at":"2026-06-21T03:05:08Z","spotify_id":"7mAoFTHVRIgVRG30stsZAr","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 0x771fc316d62e71010b8d42de512a1dceebcf8f858920f76a841870442c53ee88. 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/7mAoFTHVRIgVRG30stsZAr.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/7mAoFTHVRIgVRG30stsZAr.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa839d17ef668c102b166dd7acb1d3beca32981e85a3c073e63964b79dd796678. 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/1aNE07vqk6DcT4kG76qGUi.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/1aNE07vqk6DcT4kG76qGUi.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba101476b6e1038554da1185b92bc3f0f38d2fbd5b0971e364fccba6d183c275. 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/6XyGPap9KsaBaEO8kwjL26.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/6XyGPap9KsaBaEO8kwjL26.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76df5b11c7c6c31172cc1edce2ff0c762f479c68f25d3d3b0d0aa197370d6a5a. 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/6CLsLBZBbegohVmgouSQ73.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/6CLsLBZBbegohVmgouSQ73.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd0ca5a20e7fa0020ac4117689a0c5387700c92a8e7a094389b710195a4afe80. 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/267k2yc2PxqWTwtdiOJbbg.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/267k2yc2PxqWTwtdiOJbbg.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbab16dca4ad28b7df91026d9764bffebce5eb15f17ab177e8df19c44db104ed6. 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/4ZB3gR99d4EFIu1TNBPOt9.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/4ZB3gR99d4EFIu1TNBPOt9.
{"copyright_id":"0xbde831ee40ed8f51fb2c4b6074a38b3d06cd20fcc5bbbfc52481f0aa2c94467d","isrc":"QM6N22195740","name":"FUMÁNDOTE UN BLUNT","registered_at":"2026-06-05T05:46:20Z","spotify_id":"3iulpu9EcOjuzcto4y8rDT","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbde831ee40ed8f51fb2c4b6074a38b3d06cd20fcc5bbbfc52481f0aa2c94467d. 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/3iulpu9EcOjuzcto4y8rDT.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/3iulpu9EcOjuzcto4y8rDT.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ee7b47053d8858dde24014c631a9a68eab6428adf3d35c508dc2ed54576311c. 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/2r8IanM5Rr5SPTAgHHV72N.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/2r8IanM5Rr5SPTAgHHV72N.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ab7f5468879c51dacc40ee238ce6491c0288422c28107d0fb124dc23e5813e1. 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/6YnkINOGXQUXaRM58kQI1N.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/6YnkINOGXQUXaRM58kQI1N.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fa54401add8d2445f6e625c2a61043807cd5f73db0009021682629a09a7630d. 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/4aOQRjsWOUxQxkW04IWq07.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/4aOQRjsWOUxQxkW04IWq07.
{"copyright_id":"0x6033a7064bb8a08e8b2e0905c3e74a00e3486b8b130afa53c58e9c0041d21377","isrc":"QM6N22195745","name":"CINCUENTA ESTRELLAS MICHELÍN","registered_at":"2026-06-08T03:32:34Z","spotify_id":"28SbGMRsxhL5ITIz8KNE6y","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6033a7064bb8a08e8b2e0905c3e74a00e3486b8b130afa53c58e9c0041d21377. 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/28SbGMRsxhL5ITIz8KNE6y.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/28SbGMRsxhL5ITIz8KNE6y.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1724d72b0f4a45a6a28f22b5fdc2e6637a9a462e5284868060d2eb921e081045. 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/5IYdyMYtl2rLzr1WFiaWeH.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/5IYdyMYtl2rLzr1WFiaWeH.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2f92d5b8336c10d5c6921493a13e6b3958958313f853fb89d3a5e5a9eb1d42c. 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/047z0akwzqi0FM5UE4hDKH.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/047z0akwzqi0FM5UE4hDKH.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6a9818544fa0cdd636c193b30730ec6982425be5ddf2ae0a0341796daa51608. 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/2TZkJq8Flaj8qVKO9dJa1e.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/2TZkJq8Flaj8qVKO9dJa1e.
Cayó La Noche (feat. Cruz Cafuné, Abhir Hathi, Bejo, EL IMA) [Remix]
{"copyright_id":"0xe36e8b6b4bcdafca7e6622730adb05c76e3fa18df48d5e91d3e1997c5759c13d","isrc":"ES5152101308","name":"Cayó La Noche (feat. Cruz Cafuné, Abhir Hathi, Bejo, EL IMA) [Remix]","registered_at":"2026-06-01T08:32:57Z","spotify_id":"0Bv7O6fmZk3GrNQFYJaXPn","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe36e8b6b4bcdafca7e6622730adb05c76e3fa18df48d5e91d3e1997c5759c13d. 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/0Bv7O6fmZk3GrNQFYJaXPn.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/0Bv7O6fmZk3GrNQFYJaXPn.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6f80264ae64335316a295651af4a247b19f42b1c4ba75db6f7463a0d56120cc. 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/7KNEqKu0pQkWJ5BcUw6vMJ.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/7KNEqKu0pQkWJ5BcUw6vMJ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dc120e0a39930da9e4b45a812dfc44a5c4dc0731160d8197682c3863e6aa851. 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/1lFiwyTX9MxSy8pA3uhvy2.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/1lFiwyTX9MxSy8pA3uhvy2.
{"copyright_id":"0x771fc316d62e71010b8d42de512a1dceebcf8f858920f76a841870442c53ee88","isrc":"ES5022301041","name":"BEJO #05 AFTER HOUR THE MIXTAPE","registered_at":"2026-06-21T03:05:08Z","spotify_id":"5ufawss5PdZn1ksrxoazLl","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x771fc316d62e71010b8d42de512a1dceebcf8f858920f76a841870442c53ee88. 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/5ufawss5PdZn1ksrxoazLl.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/5ufawss5PdZn1ksrxoazLl.
{"copyright_id":"0x739c8e95aed1480339ee01ab53ba6e1be4b7c19e495c1beb9c2c3ce48cfed400","isrc":"QZK6P2322897","name":"Call Me Later","registered_at":"2026-06-23T14:44:18Z","spotify_id":"4u7ShYQmJfanGfS5UIztPB","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x739c8e95aed1480339ee01ab53ba6e1be4b7c19e495c1beb9c2c3ce48cfed400. 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/4u7ShYQmJfanGfS5UIztPB.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/4u7ShYQmJfanGfS5UIztPB.
{"copyright_id":"0x695f8d9d579e97ccc3540353c585babde02f21814ad51650d1f11bbe6ec98b9f","isrc":"QM4TX2311478","name":"RAPIÑA | Barracudas #3","registered_at":"2026-06-09T14:19:53Z","spotify_id":"4kvp38IVCQgMSuixcPz00L","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x695f8d9d579e97ccc3540353c585babde02f21814ad51650d1f11bbe6ec98b9f. 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/4kvp38IVCQgMSuixcPz00L.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/4kvp38IVCQgMSuixcPz00L.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76312863116ca44a856dee72b00641cc26227a4ac572063bb65af861aef589bb. 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/49eXLuOvFRjCmhbUBEYvhw.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/49eXLuOvFRjCmhbUBEYvhw.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd9cab1aa8287496d4677d23a3fdca150afe79dc7878d81267705dc09ae5eeab. 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/0375nqTWhCxKrp60zZzTqX.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/0375nqTWhCxKrp60zZzTqX.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x135db7a8a7910cdcfa55845ebb05414fc6519e58dc6c09b293c015f14dcbfdf9. 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/3QTbh4DSwfxMjJ1xGEsx9V.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/3QTbh4DSwfxMjJ1xGEsx9V.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x135db7a8a7910cdcfa55845ebb05414fc6519e58dc6c09b293c015f14dcbfdf9. 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/0VUfJgOgXu4FPz63wEWoCP.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/0VUfJgOgXu4FPz63wEWoCP.
{"copyright_id":"0x7543b9d90033b46afae47c9f5a8e72f1adc6e1c0414d105c6851e27f3a25fa32","isrc":"ES5022201182","name":"La Guerra de los Besos (feat. Bejo)","registered_at":"2026-06-05T16:55:49Z","spotify_id":"3WNcP8Lhs9WY1FOm8xiWBw","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7543b9d90033b46afae47c9f5a8e72f1adc6e1c0414d105c6851e27f3a25fa32. 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/3WNcP8Lhs9WY1FOm8xiWBw.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/3WNcP8Lhs9WY1FOm8xiWBw.
{"copyright_id":"0xba101476b6e1038554da1185b92bc3f0f38d2fbd5b0971e364fccba6d183c275","isrc":"QZMEP2387124","name":"AMANECÍ SIN TI","registered_at":"2026-06-10T04:17:45Z","spotify_id":"3iNLPLN09mNQWjpFnGoZBz","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba101476b6e1038554da1185b92bc3f0f38d2fbd5b0971e364fccba6d183c275. 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/3iNLPLN09mNQWjpFnGoZBz.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/3iNLPLN09mNQWjpFnGoZBz.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72c00211163bc09231cee3d84b5d087062ba5cd68df71998b955f6c5fa19f7e5. 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/5Cnh9Aze7zDQvD6wDvipep.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/5Cnh9Aze7zDQvD6wDvipep.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d0a9dbcc7773551560166c67d1c806f5a7c18506ae5c96fa24b447919b0d08d. 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/53cDb1OEygNV460PwCpNmO.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/53cDb1OEygNV460PwCpNmO.