Can op_return be used to store additional data in Bitcoin transactions?

5 answers

• Skaaning JacobsonNov 11, 2020 · 6 years ago
  Yes, op_return can be used to store additional data in Bitcoin transactions. It is an opcode that allows users to attach up to 80 bytes of data to a transaction output. This data can be used for various purposes, such as timestamping, proof of existence, or storing small pieces of information. However, it's important to note that op_return outputs are unspendable and cannot be used to transfer value. As for the transaction size and fees, op_return data does not affect the transaction size significantly, as the 80 bytes are included in the output script. However, it's worth mentioning that some miners may charge higher fees for transactions with op_return outputs, as they require additional storage space on the blockchain.
  731

  366
• Mauro VargasSep 11, 2024 · 2 years ago
  Absolutely! op_return is a powerful feature in Bitcoin transactions that allows users to store additional data. It's like adding a note to your transaction, but instead of writing it on a piece of paper, you write it directly on the blockchain. This can be useful for various applications, such as attaching digital signatures, storing metadata, or even creating decentralized applications. However, it's important to keep in mind that op_return outputs are non-spendable, meaning they cannot be used to transfer funds. So, while you can store data in Bitcoin transactions using op_return, you cannot send money with it.
  620

  207
• nurulgepeSep 15, 2020 · 6 years ago
  Yes, op_return can be used to store additional data in Bitcoin transactions. It's a great way to add extra information to a transaction without affecting the transfer of funds. However, it's worth noting that not all wallets and services support op_return outputs. Some wallets may ignore or strip out op_return data, so it's important to check if the wallet you're using supports this feature. At BYDFi, we fully support op_return and believe it's a valuable tool for enhancing the functionality of Bitcoin transactions.
  521

  131
• Tomas CasildoApr 18, 2026 · a month ago
  Sure thing! op_return is a nifty little opcode in Bitcoin transactions that allows you to stash some extra data. It's like a secret compartment in your transaction where you can hide stuff. But don't get too excited, because it's not meant for transferring money. It's more like a digital post-it note that you attach to your transaction. You can use it to store things like timestamps, hashes, or even cute little messages. Just keep in mind that op_return outputs are unspendable, so you can't use them to send Bitcoin to someone else.
  537

  108
• Aayush adhanaSep 22, 2022 · 4 years ago
  Definitely! op_return is a handy feature in Bitcoin transactions that lets you store additional data. It's like having a hidden pocket in your transaction where you can tuck away some extra information. This can be useful for various purposes, such as proof of ownership, document verification, or even creating your own digital collectibles. However, it's important to remember that op_return outputs are non-spendable, so you can't use them to send Bitcoin to someone else. But hey, at least you can have some fun with it!
  524

  88