Figure 11
A blockchain transaction error message showing revert due to unauthorized access to “approve Registration”.The screenshot shows transaction logs; the texts in the following are: Line 1. cross icon in red solid circle, open square bracket v m close square bracket from colon 0 x 0 A 0 a horizontal ellipsis C 7 0 D c, to colon S S C C dot approve Registration open parenthesis address close parenthesis 0 x f 8 B horizontal ellipsis D b a 4 0, value colon 0 wei. Line 2. data colon 0 x 5 1 7 horizontal ellipsis 3 5 c b 2, logs colon 0, hash colon 0 x f 0 e horizontal ellipsis 4 9 e 9 2. Line 3. transact to S S C C dot approve Registration errored colon Error occurred colon revert. Line 4. revert Line 5. The transaction has been reverted to the initial state. Line 6. Reason provided by the contract colon “Only regulator can perform this action,” highlighted in red. Line 7. You may want to cautiously increase the gas limit if the transaction went out of gas.

Transaction logs displaying a rejected unauthorized transaction by a non-regulator EA. Source: Authors' own creation/work

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