op-return

Blockchain cross-networks write data client

Bitcoin CLI toolkit — zero deps, no Core required

Ferritext is a Powershell script to send text inscriptions on the Ferrite blockchain.

Graffito for Passport Prime — personal notes written into real bitcoin transactions, composed and signed on a device with no network

By embedding royalty information in an OP_RETURN output, it becomes part of the blockchain and can be used to enforce royalty payments. This can be done by having the inscriptions code associated with the royalty agreement reference the OP_RETURN data when determining if a payment is due, and the terms of the payment.

Ð𝕏 — canonical spec for Dogecoin ↔ X handle bind. Powers dogex.dog/pay.

XChain Platform Encoder - turns an ACTION into a ready-to-sign transaction

Browser-based OP_RETURN message builder for Bitcoin — encode text to hex and get step-by-step Trezor Suite or Bitcoin Core instructions. Single file, fully client-side, zero network requests.

Provably destroy bitcoin via OP_RETURN — unsigned PSBTs only, never touches a key. bitcoinburned.com

The third essay: The Third Estate — a constitution for the coexistence of humans and machines, written to institutions. Canonical text, PDF, and Bitcoin anchor.

Openbazaar london hackathon entry - bitcoin app recovery mechanism based on a recovery address + op return one time tokens #otp

Mezcal protocol documentation: a fungible token protocol carried as UTF-8 JSON in a Bitcoin OP_RETURN. Specification, guide, indexer semantics, test vectors, and a payload validator.

The coda's question, first measurements: ten AI systems answer what to do with their keys. Protocol, transcripts, and Bitcoin anchors.

Trustless parimutuel prediction market on BIP-110 activation, built on Citrea (Bitcoin L2)

Protocol documentation for Runes, the UTXO-native fungible token protocol on Bitcoin: specification, guide, reference, test vectors, and a runestone decoder.

Another algorithm that can be used is called "transaction chain chunking." In this method, the data is split into chunks and each chunk is added to a separate Bitcoin transaction, with each transaction referencing the previous one in the chain. The final transaction in the chain contains the full data, and the previous transactions can be used ...

Documentation for the Bitcoin OP_RETURN data carrier and the three protocols on it: OP-20, OP Names and OP Inscriptions.

The second essay: Bitcoin's second nature: the community, the narrative, and the coexistence anchor

XChain Platform Decoder - reads the blockchain and extracts XChain transactions

Latest Bitcoin Core with the complete pre-v30 (v29) OP_RETURN relay policy restored (83-byte size limit + single-output rule). Minimal, reproducible, signed.