Glossary OS

Lectura rápida

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A proposed Bitcoin opcode (BIP 347) that would reintroduce byte-string concatenation to Tapscript, originally disabled by Satoshi Nakamoto in 2010 due to DoS concerns now mitigated by Tapscript's 520-byte stack element limit. OP_CAT would enable covenants (spending conditions constraining future transactions), Merkle proof verification, and more expressive smart contracts on Bitcoin. The proposal was assigned BIP 347 in April 2024 and is live on Signet for testing.

Modelo mental

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Contexto técnico

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Por qué le importa a un builder

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OP_CAT (op-cat)
Categoría: Blockchain General
Definición: A proposed Bitcoin opcode (BIP 347) that would reintroduce byte-string concatenation to Tapscript, originally disabled by Satoshi Nakamoto in 2010 due to DoS concerns now mitigated by Tapscript's 520-byte stack element limit. OP_CAT would enable covenants (spending conditions constraining future transactions), Merkle proof verification, and more expressive smart contracts on Bitcoin. The proposal was assigned BIP 347 in April 2024 and is live on Signet for testing.
Aliases: BIP 347
Relacionados: Bitcoin, Bitcoin Script, Taproot

Glossary Copilot

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Pregunta

Explicar este código

Opcional: pega código Anchor, Solana o Rust para que el Copilot mapee primitivas de vuelta al glosario.

Haz una pregunta aterrizada en el glosario

El Copilot responderá usando el término actual, conceptos relacionados, modelos mentales y el grafo alrededor del glosario.

Grafo conceptual

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Rama

Bitcoin

The first decentralized cryptocurrency network, launched in 2009 by the pseudonymous Satoshi Nakamoto, using a Proof-of-Work consensus mechanism and a UTXO-based transaction model. Bitcoin's protocol enforces a fixed supply cap of 21 million BTC, with new coins issued through mining block rewards that halve approximately every four years. It serves as both a peer-to-peer electronic cash system and a store of value, with its scripting language enabling basic programmability such as multisig and timelocks.

Prueba de Trabajo (PoW)UTXO Model

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Rama

Bitcoin Script

Bitcoin's stack-based, intentionally non-Turing-complete scripting language used to define spending conditions for transaction outputs. Scripts are composed of opcodes that manipulate a stack to evaluate whether a transaction is authorized, supporting operations like signature verification (OP_CHECKSIG), multisig (OP_CHECKMULTISIG), timelocks (OP_CHECKLOCKTIMEVERIFY), and hash preimage checks. Its deliberate limitations (no loops, bounded execution) minimize attack surface.

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Rama

Taproot

A Bitcoin soft fork activated in November 2021 (BIPs 340-342) introducing Schnorr signatures for efficient key/signature aggregation, MAST (Merkelized Abstract Syntax Trees) for committing complex spending conditions where only the exercised branch is revealed on-chain, and Tapscript extending Bitcoin Script with new opcodes. Taproot makes complex transactions (multisig, timelocks, conditional spending) indistinguishable from simple single-key transactions, improving privacy and efficiency.

SegWit (Segregated Witness)Bitcoin Ordinals

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Siguientes conceptos para explorar

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Estos son los siguientes conceptos que vale la pena abrir si quieres que este término tenga más sentido dentro de un workflow real de Solana.

Blockchain General

Bitcoin

The first decentralized cryptocurrency network, launched in 2009 by the pseudonymous Satoshi Nakamoto, using a Proof-of-Work consensus mechanism and a UTXO-based transaction model. Bitcoin's protocol enforces a fixed supply cap of 21 million BTC, with new coins issued through mining block rewards that halve approximately every four years. It serves as both a peer-to-peer electronic cash system and a store of value, with its scripting language enabling basic programmability such as multisig and timelocks.

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Blockchain General

Bitcoin Script

Bitcoin's stack-based, intentionally non-Turing-complete scripting language used to define spending conditions for transaction outputs. Scripts are composed of opcodes that manipulate a stack to evaluate whether a transaction is authorized, supporting operations like signature verification (OP_CHECKSIG), multisig (OP_CHECKMULTISIG), timelocks (OP_CHECKLOCKTIMEVERIFY), and hash preimage checks. Its deliberate limitations (no loops, bounded execution) minimize attack surface.

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Blockchain General

Taproot

A Bitcoin soft fork activated in November 2021 (BIPs 340-342) introducing Schnorr signatures for efficient key/signature aggregation, MAST (Merkelized Abstract Syntax Trees) for committing complex spending conditions where only the exercised branch is revealed on-chain, and Tapscript extending Bitcoin Script with new opcodes. Taproot makes complex transactions (multisig, timelocks, conditional spending) indistinguishable from simple single-key transactions, improving privacy and efficiency.

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Blockchain General

Passkey / WebAuthn Wallet

A blockchain wallet that uses the WebAuthn/FIDO2 standard for authentication via biometrics (fingerprint, face) or hardware security keys instead of seed phrases. Passkey wallets require smart contract accounts that verify P256 (secp256r1) signatures, as WebAuthn uses a different curve than Ethereum's native secp256k1. Coinbase Smart Wallet and Solana's native secp256r1 precompile are major implementations.

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Términos relacionados

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Blockchain Generalbitcoin

Bitcoin

The first decentralized cryptocurrency network, launched in 2009 by the pseudonymous Satoshi Nakamoto, using a Proof-of-Work consensus mechanism and a UTXO-based transaction model. Bitcoin's protocol enforces a fixed supply cap of 21 million BTC, with new coins issued through mining block rewards that halve approximately every four years. It serves as both a peer-to-peer electronic cash system and a store of value, with its scripting language enabling basic programmability such as multisig and timelocks.

Abrir término

Blockchain Generalbitcoin-script

Bitcoin Script

Bitcoin's stack-based, intentionally non-Turing-complete scripting language used to define spending conditions for transaction outputs. Scripts are composed of opcodes that manipulate a stack to evaluate whether a transaction is authorized, supporting operations like signature verification (OP_CHECKSIG), multisig (OP_CHECKMULTISIG), timelocks (OP_CHECKLOCKTIMEVERIFY), and hash preimage checks. Its deliberate limitations (no loops, bounded execution) minimize attack surface.

Abrir término

Blockchain Generaltaproot

Taproot

A Bitcoin soft fork activated in November 2021 (BIPs 340-342) introducing Schnorr signatures for efficient key/signature aggregation, MAST (Merkelized Abstract Syntax Trees) for committing complex spending conditions where only the exercised branch is revealed on-chain, and Tapscript extending Bitcoin Script with new opcodes. Taproot makes complex transactions (multisig, timelocks, conditional spending) indistinguishable from simple single-key transactions, improving privacy and efficiency.

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Más en la categoría

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Blockchain General

Blockchain

A distributed, append-only ledger that records transactions in cryptographically linked blocks. Each block contains a hash of the previous block, forming an immutable chain. Nodes in the network maintain copies of the ledger and reach agreement through consensus mechanisms. Blockchains enable trustless, decentralized record-keeping without a central authority.

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Blockchain General

Mecanismo de Consenso

The protocol by which nodes in a distributed network agree on the current state of the ledger. Common mechanisms include Proof of Work (Bitcoin), Proof of Stake (Ethereum, Solana), and BFT variants. Consensus ensures all honest nodes converge on the same transaction history despite potential network delays or malicious actors.

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Blockchain General

Prueba de Participación (PoS)

A consensus mechanism where validators are selected to produce blocks based on the amount of cryptocurrency they have staked (locked) as collateral. PoS is energy-efficient compared to Proof of Work. Misbehaving validators risk losing their stake (slashing). Solana, Ethereum (post-Merge), Cosmos, and Cardano use PoS variants.

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Blockchain General

Prueba de Trabajo (PoW)

A consensus mechanism where miners compete to solve computationally expensive puzzles to produce blocks and earn rewards. PoW provides strong security (51% attack resistance) but is energy-intensive. Bitcoin and pre-Merge Ethereum use PoW. The difficulty adjusts to maintain target block times regardless of total network hash power.

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