Glossary OS

Leitura rápida

Comece pela explicação mais curta e útil antes de aprofundar.

In elliptic curve cryptography, a point is 'on-curve' if it satisfies the curve equation (e.g., Ed25519) and can serve as a valid public key with a corresponding private key. An 'off-curve' point does not lie on the curve and has no associated private key. Solana Program Derived Addresses (PDAs) are deliberately generated as off-curve points by appending a bump seed, guaranteeing that no private key exists and only the owning program can sign for the address.

Modelo mental

Use primeiro a analogia curta para raciocinar melhor sobre o termo quando ele aparecer em código, docs ou prompts.

Pense nisso como um bloco de construção que ajuda a ligar uma definição isolada ao sistema maior onde ela vive.

Contexto técnico

Coloque o termo dentro da camada de Solana em que ele vive para raciocinar melhor sobre ele.

Conceitos cripto compartilhados que moldam o ecossistema mais amplo.

Por que builders ligam para isso

Transforme o termo de vocabulário em algo operacional para produto e engenharia.

Este termo destrava conceitos adjacentes rapidamente, então funciona melhor quando você o trata como um ponto de conexão, não como definição isolada.

Handoff para IA

Use este bloco compacto quando quiser dar contexto aterrado para um agente ou assistente sem despejar a página inteira.

On-Curve / Off-Curve (on-curve-off-curve)
Categoria: Blockchain Geral
Definição: In elliptic curve cryptography, a point is 'on-curve' if it satisfies the curve equation (e.g., Ed25519) and can serve as a valid public key with a corresponding private key. An 'off-curve' point does not lie on the curve and has no associated private key. Solana Program Derived Addresses (PDAs) are deliberately generated as off-curve points by appending a bump seed, guaranteeing that no private key exists and only the owning program can sign for the address.
Relacionados: Hash Function (Cryptographic), Assinante

Glossary Copilot

Faça perguntas de Solana com contexto aterrado sem sair do glossário.

Use contexto do glossário, relações entre termos, modelos mentais e builder paths para receber respostas estruturadas em vez de output genérico.

Abrir workspace completa do Copilot

Pergunta

Explicar este código

Opcional: cole código Anchor, Solana ou Rust para o Copilot mapear primitivas de volta para termos do glossário.

Faça uma pergunta aterrada no glossário

O Copilot vai responder usando o termo atual, conceitos relacionados, modelos mentais e o grafo ao redor do glossário.

Grafo conceitual

Veja o termo como parte de uma rede, não como uma definição sem saída.

Esses ramos mostram quais conceitos esse termo toca diretamente e o que existe uma camada além deles.

Ramo

Hash Function (Cryptographic)

A one-way mathematical function that maps arbitrary-length input to a fixed-size output (digest). Properties: deterministic, fast to compute, infeasible to reverse, collision-resistant. SHA-256 (used in Bitcoin, Solana PoH) produces 256-bit hashes. Keccak-256 is used in Ethereum. Hashes are used for block linking, Merkle trees, and data integrity.

Merkle Tree Prova de Trabalho (PoW)

Abrir termo

Ramo

Assinante

An account that has provided a valid Ed25519 signature in the current transaction. The runtime enforces the is_signer flag on instruction account metas—if an instruction declares an account as a signer, the transaction must include its signature. Missing signer checks are a common vulnerability in Solana programs.

Autoridade Par de Chaves

Abrir termo

Próximos conceitos para explorar

Continue a cadeia de aprendizado em vez de parar em uma única definição.

Estes são os próximos conceitos que valem abrir se você quiser que este termo faça mais sentido dentro de um workflow real de Solana.

Blockchain Geral

Hash Function (Cryptographic)

A one-way mathematical function that maps arbitrary-length input to a fixed-size output (digest). Properties: deterministic, fast to compute, infeasible to reverse, collision-resistant. SHA-256 (used in Bitcoin, Solana PoH) produces 256-bit hashes. Keccak-256 is used in Ethereum. Hashes are used for block linking, Merkle trees, and data integrity.

Abrir termo

Modelo de Programação

Assinante

An account that has provided a valid Ed25519 signature in the current transaction. The runtime enforces the is_signer flag on instruction account metas—if an instruction declares an account as a signer, the transaction must include its signature. Missing signer checks are a common vulnerability in Solana programs.

Abrir termo

Blockchain Geral

OP_CAT

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.

Abrir termo

Blockchain Geral

Omnibus Account

Account pooling multiple clients' assets under one custodian name, with internal records tracking individual shares. Exposes clients to comingling risk if custodian fails. Blockchain wallets are inherently segregated — each address holds only its own tokens with no comingling.

Abrir termo

Termos relacionados

Siga os conceitos que realmente dão contexto a este termo.

Entradas de glossário só ficam úteis quando estão conectadas. Esses links são o caminho mais curto para ideias adjacentes.

Blockchain Geralhash-function

Hash Function (Cryptographic)

A one-way mathematical function that maps arbitrary-length input to a fixed-size output (digest). Properties: deterministic, fast to compute, infeasible to reverse, collision-resistant. SHA-256 (used in Bitcoin, Solana PoH) produces 256-bit hashes. Keccak-256 is used in Ethereum. Hashes are used for block linking, Merkle trees, and data integrity.

Abrir termo

Modelo de Programaçãosigner

Assinante

An account that has provided a valid Ed25519 signature in the current transaction. The runtime enforces the is_signer flag on instruction account metas—if an instruction declares an account as a signer, the transaction must include its signature. Missing signer checks are a common vulnerability in Solana programs.

Abrir termo

Mais na categoria

Permaneça na mesma camada e continue construindo contexto.

Essas entradas vivem ao lado do termo atual e ajudam a página a parecer parte de um grafo maior, não um beco sem saída.

Blockchain Geral

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.

Abrir termo

Blockchain Geral

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.

Abrir termo

Blockchain Geral

Prova de Participação (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.

Abrir termo

Blockchain Geral

Prova de Trabalho (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.

Abrir termo