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 11 Redeem a FT

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functionRedeemFT(id string, redeemcount int)
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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 $i n v o k e r c l i e n t! = t o k e n . O w n e r$ 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 redeem token $t o k e n . I D$ owned by another”
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end if
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if $r e d e e m c o u n t > t o k e n . A v a i l a b l e A s s e t s$ then
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return “The token $t o k e n . I D$ has $t o k e n . A v a i l a b l e A s s e t s$ assets, which is less than requested redeem value $r e d e e m c o u n t$ ”
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end if
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$t o k e n . A v a i l a b l e A s s e t s \leftarrow t o k e n . A v a i l a b l e A s s e t s - r e d e e m c o u n t$
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$t o k e n J S O N \leftarrow j s o n . M a r s h a l (t o k e n)$
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$P u t S t a t e (i d, t o k e n J S O N)$
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end function