How can blockchain programming be done in Perl?

Perl is a versatile programming language that can be used to write blockchain applications. To do blockchain programming in Perl, you can either use existing blockchain libraries or write your own blockchain logic.

The following are the steps for writing a simple block display example in Perl:

1. Create a blockchain class to manage the data structure and operations of blockchain.

package Blockchain;

use strict;
use warnings;

sub new {
    my $class = shift;
    my $self = {
        chain => [],
    };
    bless $self, $class;
    return $self;
}

sub create_block {
    my $self = shift;
    my $block = {
        index => scalar(@{$self->{chain}}) + 1,
        timestamp => time(),
        data => $_[0],
        previous_hash => $self->get_last_block_hash(),
    };
    push @{$self->{chain}}, $block;
    return $block;
}

sub get_last_block_hash {
    my $self = shift;
    if (scalar(@{$self->{chain}}) > 0) {
        return $self->{chain}[-1]{hash};
    } else {
        return "0";
    }
}

1;

1. Create a simple blockchain instance using the blockchain class defined above and add some blocks to it.

use Blockchain;

my $blockchain = Blockchain->new();

$blockchain->create_block("Block 1 data");
$blockchain->create_block("Block 2 data");

print Dumper($blockchain->{chain});

This is a simple Perl blockchain example that you can expand or modify based on your own needs and logic. You can also refer to Perl-related blockchain libraries or frameworks to accelerate development progress.