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 0x539bc17eefe8fdb479c259f7cacbbdae86d1d4b8212200c3bea3f40f3eaac7fa. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/49547b5a-af8f-4d86-9138-871d829c3e57.json and https://artists.proofprofile.net/proofs/artist/49547b5a-af8f-4d86-9138-871d829c3e57.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x62037fbb6cffab35b50ff46216d74cd9f077ec4e18bc7f51bcbf72b7df14efc8. 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/6ICpIyE1WKxO8XrgokfyLr.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/6ICpIyE1WKxO8XrgokfyLr.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbddfd101d2a05ebf9cf45d806a92061d368af9439131a390b2ab91e8a844941. 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/4990CY3N7XVwcpMroNqkLL.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/4990CY3N7XVwcpMroNqkLL.
{"copyright_id":"0xf4f15fab3b965d328811d6a6f2595d94293ed55bc95e7c85b9d2ad2c7e92b43c","isrc":"QMDA72221611","name":"El Tumbao de los Cocodrilos","registered_at":"2026-06-07T14:12:54Z","spotify_id":"3l1wgUzQyu1SBSdlwLgpW8","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4f15fab3b965d328811d6a6f2595d94293ed55bc95e7c85b9d2ad2c7e92b43c. 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/3l1wgUzQyu1SBSdlwLgpW8.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/3l1wgUzQyu1SBSdlwLgpW8.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a14fe74ef2e6963c946660e1a8ec12f588dbde9883c4b15917b99662ba25418. 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/6MQIrss5qyDZjxcGp62Nj5.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/6MQIrss5qyDZjxcGp62Nj5.
{"copyright_id":"0x83e61394c82050487a5a9f3504ef98635610047f00ecc8651980c460ffcbeaa5","isrc":"ZZOPM2221910","name":"EL EDÉN (feat. Irepelusa) - Remix","registered_at":"2026-06-06T11:58:57Z","spotify_id":"7mZQB0HhEEh8hpGTNbnBZz","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83e61394c82050487a5a9f3504ef98635610047f00ecc8651980c460ffcbeaa5. 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/7mZQB0HhEEh8hpGTNbnBZz.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/7mZQB0HhEEh8hpGTNbnBZz.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x006aac86338aa9dba07a8a1644522a9796ab82c7d3c8e866771a7ea948292613. 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/1vLs2wnyMuKPM4q21Aax4E.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/1vLs2wnyMuKPM4q21Aax4E.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x006aac86338aa9dba07a8a1644522a9796ab82c7d3c8e866771a7ea948292613. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1vkWqHrsMcfjgClmJaHRHc.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/1vkWqHrsMcfjgClmJaHRHc.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fe204ce8f73966f562b77bfc560977dcda2895a8e8c5d3e3c8813e929a9ca5b. 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/5jZSqJXtRNMHYuDPJZtl9U.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/5jZSqJXtRNMHYuDPJZtl9U.
{"copyright_id":"0xbf9698a0fe320c299c238ec0c5158339e81c438a2e67f4accb0beed204a91937","isrc":"QZGLS2047093","name":"Lluvia - Remix","registered_at":"2026-06-04T13:18:46Z","spotify_id":"5VtgZ4XlvsnibxKujcgKVz","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf9698a0fe320c299c238ec0c5158339e81c438a2e67f4accb0beed204a91937. 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/5VtgZ4XlvsnibxKujcgKVz.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/5VtgZ4XlvsnibxKujcgKVz.
{"copyright_id":"0x4fa08f2923dbb71c3a497faae4c9ed7358d227c0d1901b4f05f3af59355c570e","isrc":"ZZOPM2118876","name":"Tengo la cara Cansada","registered_at":"2026-06-10T21:23:44Z","spotify_id":"5x280g6pPCRcxQWe66vAtQ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fa08f2923dbb71c3a497faae4c9ed7358d227c0d1901b4f05f3af59355c570e. 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/5x280g6pPCRcxQWe66vAtQ.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/5x280g6pPCRcxQWe66vAtQ.
{"copyright_id":"0xda01a1ccc2a4037e757a5964a38db0414ab9cab7807a558466bc3a1be99c65de","isrc":"QZHZ52244287","name":"Cuarzo (Caribe)","registered_at":"2026-06-07T18:29:47Z","spotify_id":"4U0EjfmfS9xXs0jAObGcvj","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda01a1ccc2a4037e757a5964a38db0414ab9cab7807a558466bc3a1be99c65de. 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/4U0EjfmfS9xXs0jAObGcvj.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/4U0EjfmfS9xXs0jAObGcvj.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaab804f0fb7fbfe02048374b4aec00d61231dd30a113ff1b5a8863771242605e. 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/3pQLZD1DdKGoWxTtW3poLk.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/3pQLZD1DdKGoWxTtW3poLk.
Always Vacaciones (feat. Xavibo, Çantamarta)
{"copyright_id":"0xe5e07669b602969d0cfe4938316b9a2f5199ada49e0ad41e007b7fb59a03bc6e","isrc":"ES5152100293","name":"Always Vacaciones (feat. Xavibo, Çantamarta)","registered_at":"2026-06-09T13:49:07Z","spotify_id":"5TVbeFhbSQs5htnJh4LmVj","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5e07669b602969d0cfe4938316b9a2f5199ada49e0ad41e007b7fb59a03bc6e. 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/5TVbeFhbSQs5htnJh4LmVj.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/5TVbeFhbSQs5htnJh4LmVj.
{"copyright_id":"0x2072c8b51344111ca1c7f95eca002ef5ebcbc1ff0ecdc48264d575577d19f29b","isrc":"QZNJV2327267","name":"Quién Pudiera?","registered_at":"2026-06-04T07:06:39Z","spotify_id":"3TWAnB0Pok8EnOLimD18ue","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2072c8b51344111ca1c7f95eca002ef5ebcbc1ff0ecdc48264d575577d19f29b. 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/3TWAnB0Pok8EnOLimD18ue.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/3TWAnB0Pok8EnOLimD18ue.
{"copyright_id":"0xa7dbab23d6db05987880f32fd15bea2918dbc841c3f9152583d4cbcdf27a7af6","isrc":"ES5152400091","name":"El Cerro y El Mar (feat. Çantamarta)","registered_at":"2026-06-20T03:44:38Z","spotify_id":"0Ul28GqgUKYoV96p2JEkJV","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7dbab23d6db05987880f32fd15bea2918dbc841c3f9152583d4cbcdf27a7af6. 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/0Ul28GqgUKYoV96p2JEkJV.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/0Ul28GqgUKYoV96p2JEkJV.