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 0x3acb319ffdfb158d220255a04ab602a70b0fc548c5fb6c06ff4fb1a6b9a33e16. 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/a8dc6df4-5b0d-4d3e-9176-6f5f9fb76086.json and https://artists.proofprofile.net/proofs/artist/a8dc6df4-5b0d-4d3e-9176-6f5f9fb76086.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 0xf82888349f16bd47ab350f0026ca72ab76fbf8cf61eb37b47f3cf31915c6a322. 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/5MIG10m8vwCHX4Rk15VLaJ.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/5MIG10m8vwCHX4Rk15VLaJ.
Muérdeles (Live Vistalegre - Madrid, 28 Oct. 2017)
Muérdeles - Live Vistalegre - Madrid, 28 Oct. 2017
Nos volveremos a ver (Directo Vistalegre, Madrid 2017)
Intro "Las miserias de sus crímenes" - Directo
Nos Volveremos a Ver (Live Vistalegre - Madrid, 28 Oct. 2017)
Intro "Las Miserias de Sus Crímenes" - Live Vistalegre
Donde Duerme el Chamán - Live Vistalegre
Llueve en Semana Santa - Live Vistalegre
El Lado de los Rebeldes - Live Vistalegre
La Hoguera de los Continentes - Live Vistalegre
A la Sombra de la Sierra - Live Vistalegre
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59352a012c955e8834fd8293c40465aae8b41e81548ebba4a7117a7ee55028c9. 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/2rFMFeVuIPz2uQivIU93tz.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/2rFMFeVuIPz2uQivIU93tz.
El Futuro Nunca Existió (Live) [feat. Julio & La Raíz]
{"copyright_id":"0xe5b70bb7703895dc8c5404340525569a721b8b579412be11e6d372aa59171dad","isrc":"ES8241624008","name":"El Futuro Nunca Existió (Live) [feat. Julio & La Raíz]","registered_at":"2026-06-06T04:47:00Z","spotify_id":"4KdM0QZSiijdYqnJknfRS3","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5b70bb7703895dc8c5404340525569a721b8b579412be11e6d372aa59171dad. 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/4KdM0QZSiijdYqnJknfRS3.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/4KdM0QZSiijdYqnJknfRS3.
{"copyright_id":"0x5ba3938ccae083e3ed0d98a69eb7837057ab9a18838549ee4293a64e2bb7fc6d","isrc":"QM4TW1826027","name":"Los Borbones Son Unos Ladrones","registered_at":"2026-06-05T07:12:56Z","spotify_id":"7BXTCiQvCcfZyFtQ3hXQdh","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ba3938ccae083e3ed0d98a69eb7837057ab9a18838549ee4293a64e2bb7fc6d. 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/7BXTCiQvCcfZyFtQ3hXQdh.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/7BXTCiQvCcfZyFtQ3hXQdh.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd162193ec33b877552550947e408d215a5762482af868e700e7fead8e2e78853. 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/4yxxnWxbskTRs0ZF9hctRu.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/4yxxnWxbskTRs0ZF9hctRu.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x307357c88003cc14c0ff393218c2ddd2bc82d972a22f3777fe52f86d1a6b9847. 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/2ES9JejkdhQJUX3zN5tXcn.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/2ES9JejkdhQJUX3zN5tXcn.