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 artist was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4563074c3fecde652848c01eac7c951fee36a17d16ad9be95dda17e2a1ba31a4. 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/c1925d0d-face-4bd5-aca4-5c34acc4607a.json and https://artists.proofprofile.net/proofs/artist/c1925d0d-face-4bd5-aca4-5c34acc4607a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Himno Nacional Alemania - Deutschlandlied
Himno Nacional Dinamarca - Der Er Et Yndigt Land
Himno Nacional Holanda - Wilhelmus Van Nassowe
Himno Nacional Inglaterra - God Save The Queen
Himno Nacional Italia - Fratelli D'italia - Inno Di Mameli
Himno Nacional Rusia - Gimn Rossijskoj Federacii
Himno Nacional Suecia - Du Gamla, Du Fria
National Anthems: European Football Championship 2012
National Anthem Croatia - Lijepa Nasa Domovino
National Anthem Denmark - Der Er Et Yndigt Land
National Anthem France - La Marseillaise
National Anthem Germany - Deutschlandlied
National Anthem Greece - Ýmnos Eis Tin Elefthería
National Anthem Great Britain - God Save the Queen
National Anthem Ireland - Amhrán Na Bhfiann
National Anthem Italy - Fratelli D'italia - Inno Di Mameli
National Anthem Holland - Wilhelmus Van Nassowe
National Anthem Poland - Mazurek Dabrowskiego
National Anthem Czech Republic - Kde Domov Muj?
National Anthem Russia - Gimn Rossijskoj Federacii
National Anthem Sweden - Du Gamla, Du Fria
National Anthem of Ukraine - Sce Ne Vmerla Ukrajiny
Inno nazionale Croazia - Lijepa naša domovino
Inno nazionale Danimarca - Der er et yndigt land
Inno nazionale Germania - Deutschlandlied
Inno nazionale Grecia - Inno alla libertà
Inno nazionale Inghilterra - God Save the Queen
Inno nazionale Irlanda - Amhrán na bhFiann
Inno nazionale Italia - Fratelli d'Italia - Inno di Mameli
Inno nazionale Olanda - Wilhelmus van Nassowe
Inno nazionale Polonia - Mazurek Dabrowskiego
Inno nazionale Portogallo - A Portuguesa
Inno nazionale Repubblica Ceca - Kde domov muj?
Inno nazionale Russia - Gimn Rossijskoj Federacii
Inno nazionale Svezia - Du gamla, du fria
Inno nazionale Ucraina - Sce ne vmerla Ukrajiny
Nationalhymne - fußball-europameisterschaft 2012
Nationalhymne dänemark - Der er et yndigt land
Nationalhymne deutschland - Deutschlandlied
Nationalhymne england - God save the queen
Nationalhymne frankreich - La marseillaise
Nationalhymne italien - Fratelli d'italia - inno di mameli
Nationalhymne kroatien - Lijepa naša domovino
Nationalhymne republik irland - Amhrán na bhfiann
Nationalhymne niederlande - Wilhelmus van nassowe
Nationalhymne russland - Gimn rossijskoj federacii
Nationalhymne schweden - Du gamla, du fria
Nationalhymne tschechische republik - Kde domov muj
Hymnes nationaux - championnat d'europe de football 2012
Hymne national croatie - Lijepa naša domovino
Hymne national danemark - Der er et yndigt land
Hymne national allemagne - Deutschlandlied
Hymne national angleterre - God save the queen
Hymne national italie - Fratelli d'italia - inno di mameli
Hymne national pays-bas - Wilhelmus van nassowe
Hymne national russie - Gimn rossijskoj federacii
Hymne national suède - Du gamla, du fria
Himno Nacional España Ringtone (Marcha Real - Vamos España!)
Himno Nacional España Ringtone - Marcha Real
Hino Nacional Portugal (Força Portugal!)
Inno nazionale Italia (Forza Azzurri! - Fratelli d'Italia - Inno di Mameli)
Inno nazionale Italia - Forza Azzurri! - Fratelli d'Italia - Inno di Mameli
National Anthem Denmark (Der Er Et Yndigt Land)
National Anthem Croatia (Lijepa Nasa Domovino)
Himno Nacional España (Marcha Real - Vamos España!)
Himno Nacional España - Marcha Real - Vamos España!
Hymne National France Ringtone (La marseillaise - Allez La France!)
Hymne National France Ringtone - La marseillaise
Hino Nacional Portugal Ringtone (A Portuguesa - Força Portugal!)
Hino Nacional Portugal Ringtone - A Portuguesa - Força Portugal!
Nationalhymne deutschland ringtone (Deutschlandlied)
Nationalhymne deutschland ringtone - Deutschlandlied
National Anthem Russia (Gimn Rossijskoj Federacii)
National Anthem Great Britain (Go England!)
National Anthem Sweden (Du Gamla, Du Fria)
Nationalhymne Deutschland (Deutschlandlied)
Nationalhymne Deutschland - Deutschlandlied
National Anthem Holland Ringtone (Wilhelmus Van Nassowe - Hup Holland Hup!)
National Anthem Holland Ringtone - Wilhelmus Van Nassowe
National Anthem Czech Republic (Kde Domov Muj?)
Inno nazionale Italia suoneria (Fratelli d'Italia - Inno di Mameli - Forza Azzurri!)
Inno nazionale Italia suoneria - Fratelli d'Italia - Inno di Mameli
National Anthem of Ukraine (Sce Ne Vmerla Ukrajiny)
Hymne national France (Allez la France! La marseillaise)
Hymne national France - Allez la France! La marseillaise
Himno Nacional Costa Rica (Noble Patria, Tu Hermosa Bandera)
Himno Nacional Costa Rica - Noble Patria, Tu Hermosa Bandera
Himno Nacional México Ringtone (Himno Nacional Mexicano)
Himno Nacional México Ringtone - Himno Nacional Mexicano
Himno Nacional Uruguay (Orientales, la Patria o la Tumba)
Himno Nacional Uruguay - Orientales, la Patria o la Tumba
Himno Nacional Colombia Ringtone (Oh Gloria Inmarcesible!)
Himno Nacional Colombia Ringtone - Oh Gloria Inmarcesible!
Himno Nacional Chile (Canción Nacional )
Himno Nacional de Chile - Canción Nacional
Himno Nacional Costa Rica Ringtone (Noble Patria, Tu Hermosa Bandera)
Himno Nacional de Costa Rica Ringtone - Noble Patria, Tu Hermosa Bandera
Hymne national belgique ringtone (Qui aurait dit de l'arbitraire)
Hymne national belgique ringtone - Qui aurait dit de l'arbitraire
Hino Nacional Brasil (Hino Nacional Brasileiro)
Hino Nacional Brasil - Hino Nacional Brasileiro
National Anthem New Zealand (God Defend New Zealand)
National Anthem New Zealand - God Defend New Zealand
Himno Nacional Chile Ringtone (Canción Nacional )
Himno Nacional de Chile Ringtone - Canción Nacional
National Anthem United States of America - USA (The Star-Spangled Banner)
National Anthem United States of America- USA - The Star-Spangled Banner
Himno Nacional Colombia (Oh Gloria Inmarcesible!)
Himno Nacional de Colombia - Oh Gloria Inmarcesible!
Hymne national Belgique (Qui aurait dit de l'arbitraire)
Hymne national Belgique - Qui aurait dit de l'arbitraire
Himno Nacional Venezuela Ringtone (Gloria al Bravo Pueblo!)
Himno Nacional Venezuela Ringtone - Gloria al Bravo Pueblo!
Himno Nacional Uruguay Ringtone (Orientales, la Patria o la Tumba)
Himno Nacional Uruguay Ringtone - Orientales, la Patria o la Tumba
Himno Nacional Argentina Ringtone (Canción Patriótica)
Himno Nacional de Argentina Ringtone - Canción Patriótica
Himno Nacional Argentina (Canción Patriótica)
Himno Nacional Argentina - Canción Patriótica
National Anthem United States of America Ringtone (The Star-Spangled Banner)
National Anthem United States of America Ringtone - The Star-Spangled Banner
Nationalhymne schweiz ringtone (Schweizer psalm)
Nationalhymne schweiz ringtone - Schweizer psalm
Himno Nacional México (Himno Nacional Mexicano)
Himno Nacional México - Himno Nacional Mexicano
Himno Nacional Cuba Ringtone (La Bayamesa)
Himno Nacional de Cuba Ringtone - La Bayamesa
Nationalhymne republik österreich (Land der berge, land am strome)
Nationalhymne republik österreich - Land der berge, land am strome
National Anthem Bosnia and Herzegovina (Narodna Himna)
National Anthem Bosnia and Herzegovina - Narodna Himna
National Anthem South Africa (Nkosi Sikelel' Iafrika/die Stem Van Suid-Afrika)
National Anthem South Africa - Nkosi Sikelel' Iafrika/die Stem Van Suid-Afrika
Nationalhymne Republik Österreich Ringtone (Land der Berge, Land am Strome)
Nationalhymne Republik Österreich Ringtone - Land der Berge, Land am Strome
Himno Nacional Venezuela (Gloria Al Bravo Pueblo!)
Himno Nacional de Venezuela - Gloria Al Bravo Pueblo!
61 World National Anthems (London Olympic Games 2012)
National Anthem Australia - Advance Australia Fair
National Anthem China - Yiyongjun Jinxingqu
National Anthem Cyprus - Ýmnos Eis Tin Elefthería
National Anthem Hungary - Isten, Áldd Meg a Magyart
National Anthem United States of America - USA - The Star-Spangled Banner
Nationalhymne Republik Österreich - Land der berge, land am strome
National Anthem Schweiz Suisse Svizzera Switzerland - Schweizer Psalm
National Anthem Albania - Himni I Flamurit
National Anthem Andorra - El Gran Carlemany
National Anthem Belarus - Dziarzany Himn Respubliki Bielarus
Himno Nacional Bolivia - Bolivianos, El Hado Propicio
National Anthem Lithuania - Tautiska Giesme
National Anthem Luxembourg - Ons Heemecht
National Anthem Libya - Libya Libya Libya - Ya Beladi
National Anthem Morocco - Hymne Cherifien
Hymne National Principauté De Monaco - Hymne Monégasque
National Anthem Norway - Ja, Vi Elsker Dette Landet
National Anthem Pakistan - Qawmi; Tarana
National Anthem Romania - Desteapta-te, Române!
Inno Nazionale San Marino - Inno Nazionale della Repubblica
National Anthem Isle of Man - Arrane Ashoonagh
Hymne national belgique - Qui aurait dit de l'arbitraire
Hymne national france - Allez la france! la marseillaise
Inno nazionale italia - Forza azzurri! - fratelli d'italia - inno di mameli
National Anthem United States of America - Usa - The Star-Spangled Banner
National anthem schweiz suisse svizzera switzerland - Schweizer psalm
National Anthem Belarus - Dziarzauny Himn Respubliki Bielarus
National Anthem Romania - Desteapta-Te, Române!
Inno Nazionale San Marino - Inno Nazionale Della Repubblica
National Anthem of the Republics, Vol. 1