Data Insertion in Blockchain For Legal Purposes. How to Sign Contracts Using Blockchain

O.I. Konashevych
Erasmus Mundus Joint International Doctoral Fellow in Law, Science and Technology
(Via Galliera, 3, 40121, Bologna, Italia;
e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.)

Èlektron. model. 2019, 41(5):103-120


The use of blockchain technology, in particular, data insertion (anchoring, hashing) in theThe use of blockchain technology, in particular, data insertion (anchoring, hashing) in theblockchain as a way of signing documents or imparting legal properties to facts is researched. Acomparative analysis of the known methods of using electronic digital signature with the methodof inserting data into the blockchain is carried out. The following issues were addressed. What isthe data insertion in the blockchain and what properties do the data acquire? What is the differencebetween insertion, anchoring, and hashing on the blockchain? What is the difference betweenblockchain hashing and a digital signature on a document? Will the document be legallybinding if it is anchored in the blockchain? What conditions must be met to give legal force for thedocument? How can anchoring be used to sign contracts, certify evidence that has legal value, denotetime stamps, confirm authorship and copyrights, as well as transfer them, issue, and transferpower of attorney and delegate other rights, issue and transfer bearer instruments?


Blockchain, OP_DROP, OR_RETURN, electronic signature, eIDAS, PKI, proofof-existence.


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