Blockchain Based Transaction System with Fungible and Non-Fungible Tokens for a Community-Based Energy Infrastructure

. 2021 May 31;21(11):3822. doi: 10.3390/s21113822

Algorithm 5 Transfer a NFT

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functionTransferNFT(id string)
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$t o k e n \leftarrow R e a d T o k e n (i d)$ ▹ Calling Algorithm 2
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$i n v o k e r c l i e n t \leftarrow G e t C l i e n t I d e n t i t y () . G e t I D ()$
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if invokerclient != token.Owner then
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return “The client $i n v o k e r c l i e n t$ is not authorized to transfer token owned by $t o k e n . O w n e r$ ”
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end if
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if $t o k e n . B i d = = “ ”$ then
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return “No bid yet”
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end if
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$C r e a t e N F T (t o k e n . T o k e n T y p e, T R U E, t o k e n . B i d, t o k e n . a v a i l a b l e a s s e t s)$

▹ Calling Algorithm 3, to create new token with buyer’s id
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$D e l S t a t e (i d)$ ▹ Delete the token with seller’s id
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end function