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 0x86947094debdba02ce0f96fcc5c047bfca19b77d93eb23cb41de05e30a1c0dad. 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/02b00f49-a8dd-4a0f-82f6-5bf70706ee64.json and https://artists.proofprofile.net/proofs/artist/02b00f49-a8dd-4a0f-82f6-5bf70706ee64.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0x2eb3b61cade316bcd01e237dc8e75e2cd068c4f24c2a049ea16c28c572f4294a","isrc":"ARG601200948","name":"Cancion de las Simples Cosas","registered_at":"2026-06-29T18:49:19Z","spotify_id":"3uVn9y4eepNSeEbUtSFm6U","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 0x2eb3b61cade316bcd01e237dc8e75e2cd068c4f24c2a049ea16c28c572f4294a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3uVn9y4eepNSeEbUtSFm6U.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/3uVn9y4eepNSeEbUtSFm6U.
Introducción (Palabras de Gerardo Rozín)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02ab83fece3a4f63656410dc3851a2178b9c0e0090831439b302800b6d10c036. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0zt5nbNVAAdTZIsTn96T4z.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/0zt5nbNVAAdTZIsTn96T4z.
{"copyright_id":"0xcc0fbdf02ec16a568ce09ed56e2d6caccd8c5f26688d8483f39008726d3f76ca","isrc":"ARZ022200587","name":"El Último Café","registered_at":"2026-06-29T06:25:57Z","spotify_id":"2ZXolNtwfrIWUpFrP2vzxw","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc0fbdf02ec16a568ce09ed56e2d6caccd8c5f26688d8483f39008726d3f76ca. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2ZXolNtwfrIWUpFrP2vzxw.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/2ZXolNtwfrIWUpFrP2vzxw.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2239c1f5fa0e5d9bf94e634e36e12888d91a1e15636270406262b0cd823786ba. 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/2RbCzyjatT607S4Q8uDEkg.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/2RbCzyjatT607S4Q8uDEkg.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf41a761f9c2a38f813186d45330ab68c485d2a0b741df546016148c037f3c8ac. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1QEFhIBlXWMVItyKQoN5lU.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/1QEFhIBlXWMVItyKQoN5lU.
Las canciones más lindas del mundo, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf41a761f9c2a38f813186d45330ab68c485d2a0b741df546016148c037f3c8ac. 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/5Gtqi4sCt3Aj4KTfbhdkhG.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/5Gtqi4sCt3Aj4KTfbhdkhG.
{"copyright_id":"0xf0948da825eb2e03ddc0c006cf0c50ae868ce81ea0c1185cc3634765a261eb49","isrc":"ARZ022500128","name":"Pétalo de sal","registered_at":"2026-06-07T11:31:17Z","spotify_id":"1caOzwrLNlGpB2EmHKFAZL","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0948da825eb2e03ddc0c006cf0c50ae868ce81ea0c1185cc3634765a261eb49. 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/1caOzwrLNlGpB2EmHKFAZL.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/1caOzwrLNlGpB2EmHKFAZL.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2239c1f5fa0e5d9bf94e634e36e12888d91a1e15636270406262b0cd823786ba. 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/05UrKlSdFHgSLEbueg2CbW.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/05UrKlSdFHgSLEbueg2CbW.
{"copyright_id":"0x105cc4c592ed51c2cf72b2d7c841e8bb604a017ffa1e2657577ac32a35254b0f","isrc":"ARZ022500129","name":"Chayita del vidalero","registered_at":"2026-06-08T17:35:56Z","spotify_id":"2igJik2m4gDBBiPKeAxk60","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x105cc4c592ed51c2cf72b2d7c841e8bb604a017ffa1e2657577ac32a35254b0f. 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/2igJik2m4gDBBiPKeAxk60.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/2igJik2m4gDBBiPKeAxk60.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f85a44c2a2b413ae273f99891e50a5c9d123332916002a1cfa836134e7c000b. 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/5PTYMjKCIciP90gtL92ASf.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/5PTYMjKCIciP90gtL92ASf.
{"copyright_id":"0xfc2687e62ab3542c32f237d249aec266fb6e58519c5bb284bb8cc3b7e80fc699","isrc":"ARZ022500131","name":"Quiero abrazarte tanto","registered_at":"2026-06-08T17:29:10Z","spotify_id":"19odksB8xPBAGxjEtbK1kv","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc2687e62ab3542c32f237d249aec266fb6e58519c5bb284bb8cc3b7e80fc699. 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/19odksB8xPBAGxjEtbK1kv.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/19odksB8xPBAGxjEtbK1kv.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee7a37937e8aa87d9cc33496c2b74aec531ad1d2f5566cd5fc99a23e247bae51. 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/5cxlvJug9nFDETDdLrsfBu.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/5cxlvJug9nFDETDdLrsfBu.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47552197d186db9d09f56323587a4a4e9af7ca677a33fb747bb2fb96f3628649. 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/67nJER7ZfLfarWRKb1xEvE.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/67nJER7ZfLfarWRKb1xEvE.
{"copyright_id":"0x2dc4dee83e3473b2fece1c656cc06d0ea4a404a0426174a43dd54c3ed69814fd","isrc":"ARZ022500133","name":"Candombe para Gardel","registered_at":"2026-06-09T14:34:02Z","spotify_id":"0PbGpAL4OnzgezHtpaqFSP","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dc4dee83e3473b2fece1c656cc06d0ea4a404a0426174a43dd54c3ed69814fd. 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/0PbGpAL4OnzgezHtpaqFSP.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/0PbGpAL4OnzgezHtpaqFSP.
{"copyright_id":"0xb9d31c12b0e6d91cafcea2e1676e7c71ef790a02029688ab97294ba595e7b784","isrc":"ARG602300063","name":"Corazon de Curupí (feat. Dos Mas Uno)","registered_at":"2026-06-09T10:27:56Z","spotify_id":"7vIhUk7A59vfOrh3t7Nla3","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9d31c12b0e6d91cafcea2e1676e7c71ef790a02029688ab97294ba595e7b784. 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/7vIhUk7A59vfOrh3t7Nla3.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/7vIhUk7A59vfOrh3t7Nla3.