user110156: I have an old Bitcoin (Counterparty) wallet that I am importing past transactions. I found a Tx that has a missing output address on one API, but it shows on another. I cannot find any documentation on what the Bitcoin address prefixed with '4' means. Is this valid or just a place holder?
Tx Hash: 5288973c6e2a323a2fbc95b84fbfd18b4ed2f75895c8295db03c653ea58c70d6
Blockcypher is showing the '4' (4PTehVhW6qTNhn88DK3JPBMkXfB2wR4juB)
https://api.blockcypher.com/v1/btc/main/txs/5288973c6e2a323a2fbc95b84fbfd18b4ed2f75895c8295db03c653ea58c70d6
Original API call is through Blockchain.Info
https://www.blockchain.com/btc/tx/5288973c6e2a323a2fbc95b84fbfd18b4ed2f75895c8295db03c653ea58c70d6
Blockchain just says "Unable to decode output address".
This is a counterparty transaction so I am thinking it may have something to do with that. Thoughts?

user-1: I see it as multisig script on OXT

Blockchair shows it as multisig address: m-99d8dc4aa2b7f5b105fe442f651d73e6

blockstream.info shows UNKNOWN


user101498: These are bare multisig scripts, there is no address format for such type of output. So explorers basically came up with confusing (and constantly differents, as there is no right one) placeholders.

110156: <p>I have an old Bitcoin (Counterparty) wallet that I am importing past transactions. I found a Tx that has a missing output address on one API, but it shows on another. I cannot find any documentation on what the Bitcoin address prefixed with '4' means. Is this valid or just a place holder?</p>
<p>Tx Hash: 5288973c6e2a323a2fbc95b84fbfd18b4ed2f75895c8295db03c653ea58c70d6</p>
<p>Blockcypher is showing the '4' (4PTehVhW6qTNhn88DK3JPBMkXfB2wR4juB)
<a href="https://api.blockcypher.com/v1/btc/main/txs/5288973c6e2a323a2fbc95b84fbfd18b4ed2f75895c8295db03c653ea58c70d6" rel="nofollow noreferrer">https://api.blockcypher.com/v1/btc/main/txs/5288973c6e2a323a2fbc95b84fbfd18b4ed2f75895c8295db03c653ea58c70d6</a></p>
<p>Original API call is through Blockchain.Info
<a href="https://www.blockchain.com/btc/tx/5288973c6e2a323a2fbc95b84fbfd18b4ed2f75895c8295db03c653ea58c70d6" rel="nofollow noreferrer">https://www.blockchain.com/btc/tx/5288973c6e2a323a2fbc95b84fbfd18b4ed2f75895c8295db03c653ea58c70d6</a></p>
<p>Blockchain just says &quot;Unable to decode output address&quot;.</p>
<p>This is a counterparty transaction so I am thinking it may have something to do with that. Thoughts?</p>
 -1: <p>I see it as multisig script on <a href="https://oxt.me" rel="nofollow noreferrer">OXT</a></p>
<p><a href="https://i.stack.imgur.com/NyXXh.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/NyXXh.png" alt="oxt" /></a></p>
<p><a href="https://blockchair.com" rel="nofollow noreferrer">Blockchair</a> shows it as multisig address: <code>m-99d8dc4aa2b7f5b105fe442f651d73e6</code></p>
<p><a href="https://i.stack.imgur.com/Fs6zh.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/Fs6zh.png" alt="blockchair" /></a></p>
<p><a href="https://blockstream.info" rel="nofollow noreferrer">blockstream.info</a> shows UNKNOWN</p>
<p><a href="https://i.stack.imgur.com/zvKtz.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/zvKtz.png" alt="blockstream-info" /></a></p>
 101498: <p>These are bare multisig scripts, there is no address format for such type of output. So explorers basically came up with confusing (and constantly differents, as there is no <em>right</em> one) placeholders.</p>
