User authentication services using blockchain technology for transactions involving autographs and related collectibles; Authentication of data in the field of autographs and collectibles using blockchain technology; Providing user authentication services using blockchain-based software technology for transactions relating to autographs and collectibles

'authent':2,14,29 'autograph':10,21,41 'base':34 'blockchain':5,25,33 'blockchain-bas':32 'collect':13,23,43 'data':16 'field':19 'involv':9 'provid':27 'relat':12,39 'servic':3,30 'softwar':35 'technolog':6,26,36 'transact':8,38 'use':4,24,31 'user':1,28

Downloadable computer software for authenticating autographs using blockchain technology; Downloadable computer software for creating, managing, and validating registries authenticating autographs and related transactions using blockchain technology

'authent':5,19 'autograph':6,20 'blockchain':8,25 'comput':2,11 'creat':14 'download':1,10 'manag':15 'registri':18 'relat':22 'softwar':3,12 'technolog':9,26 'transact':23 'use':7,24 'valid':17

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