我正在尝试使用这个指南在ruby中生成比特币地址：
https://bhelx.simst.im/articles/generating-bitcoin-keys-from-scratch-with-ruby/
但是有些地方不太对劲，因为生成的地址并不完全正确。
下面是我使用的类：

require 'openssl'
require 'ecdsa'
require 'securerandom'
require 'base58'

class BitcoinAddressGenerator

  ADDRESS_VERSION = '00'

  def self.generate_address
    # Bitcoin uses the secp256k1 curve
    curve = OpenSSL::PKey::EC.new('secp256k1')

    # Now we generate the public and private key together
    curve.generate_key

    private_key_hex = curve.private_key.to_s(16)
    puts "private_key_hex: #{private_key_hex}"
    public_key_hex = curve.public_key.to_bn.to_s(16)
    puts "public_key_hex: #{public_key_hex}"

    pub_key_hash = public_key_hash(public_key_hex)
    puts "pub_key_hash: #{pub_key_hash}"

    address = generate_address_from_public_key_hash(public_key_hash(public_key_hex))

    puts "address: #{address}"
  end

  def self.generate_address_from_public_key_hash(pub_key_hash)
    pk = ADDRESS_VERSION + pub_key_hash
    encode_base58(pub_key_hash + checksum(pub_key_hash))
  end

  def self.int_to_base58(int_val, leading_zero_bytes=0)
    alpha = "123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz"
    base58_val, base = '', alpha.size
    while int_val > 0
      int_val, remainder = int_val.divmod(base)
      base58_val = alpha[remainder] + base58_val
    end
    base58_val
  end

  def self.encode_base58(hex)
    leading_zero_bytes = (hex.match(/^([0]+)/) ? $1 : '').size / 2
    ("1"*leading_zero_bytes) + int_to_base58( hex.to_i(16) )
  end

  def self.checksum(hex)
    sha256(sha256(hex))[0...8]
  end

  # RIPEMD-160 (160 bit) hash
  def self.rmd160(hex)
    Digest::RMD160.hexdigest([hex].pack("H*"))
  end

  def self.sha256(hex)
   Digest::SHA256.hexdigest([hex].pack("H*"))
  end

  # Turns public key into the 160 bit public key hash
  def self.public_key_hash(hex)
    rmd160(sha256(hex))
  end

end

它输出如下内容：

private_key_hex: C96DE079BAE4877E086288DEDD6F9F70B671862B7E6E4FC0EC401CADB81EDF45
public_key_hex: 0422435DF80F62E643D3CFBA66194052EC9ED0DFB47A1B26A4731079A5FF84FBF98FF0A540B6981D75BA789E6192F3B38BABEF6B0286CAEB4CAFCB51BB96D97B46
public_key_hash: db34927cc5ec0066411f366d9a95f9c6369c6e1d
address: Lz3xnxx6Uh79PEzPpWSMMZJVWR36hJgVL

如果我把这个地址插入blockchain.info和类似的工具，它会说这是一个无效的地址。
任何帮助都将不胜感激。