Glossary OS

Lectura rápida

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The sub-second transaction finality goal of the Alpenglow consensus protocol, targeting approximately 150 milliseconds from block production to irreversible confirmation. Fast finalization is achieved by replacing Tower BFT's exponential lockout mechanism (which requires ~31 confirmations over ~12.8 seconds) with Alpenglow's certificate-based approach where a single round of supermajority voting produces an irrevocable finality proof.

Modelo mental

Usa primero la analogía corta para razonar mejor sobre el término cuando aparezca en código, docs o prompts.

Piensa en esto como parte del engranaje que mantiene funcionando el orden, la ejecución o el consenso de la red.

Contexto técnico

Ubica el término dentro de la capa de Solana en la que vive para razonar mejor sobre él.

Consenso, rotación de líderes, slots, epochs y el runtime.

Por qué le importa a un builder

Convierte el término de vocabulario en algo operacional para producto e ingeniería.

Este término desbloquea conceptos adyacentes rápido, así que funciona mejor cuando lo tratas como un punto de conexión y no como una definición aislada.

Handoff para IA

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Fast Finalization (fast-finalization)
Categoría: Protocolo Base
Definición: The sub-second transaction finality goal of the Alpenglow consensus protocol, targeting approximately 150 milliseconds from block production to irreversible confirmation. Fast finalization is achieved by replacing Tower BFT's exponential lockout mechanism (which requires ~31 confirmations over ~12.8 seconds) with Alpenglow's certificate-based approach where a single round of supermajority voting produces an irrevocable finality proof.
Relacionados: Alpenglow, Alpenglow Certificate, Finalidad

Glossary Copilot

Haz preguntas de Solana con contexto aterrizado sin salir del glosario.

Usa contexto del glosario, relaciones entre términos, modelos mentales y builder paths para recibir respuestas estructuradas en vez de output genérico.

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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

Ve el término como parte de una red, no como una definición aislada.

Estas ramas muestran qué conceptos toca este término directamente y qué existe una capa más allá de ellos.

Rama

Alpenglow

A next-generation consensus protocol proposed in SIMD-0326 that aims to collapse Solana's legacy systems (Proof of History, Tower BFT, gossip-based vote propagation) into two streamlined mechanisms: Rotor for data propagation and Votor for off-chain voting. Alpenglow targets reducing transaction finality from ~12.8 seconds to under 150 milliseconds, representing the most significant consensus overhaul in Solana's history.

Mecanismo de Consenso Tower BFT

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Rama

Alpenglow Certificate

A fast finality certificate produced by the Alpenglow consensus protocol when a supermajority of validators (66.7%+ of stake) have attested to a block through Votor's off-chain voting mechanism. Once an Alpenglow certificate is formed, the block is considered final, reducing finality time from Tower BFT's ~12.8 seconds to a target of under 150 milliseconds. Certificates are compact proofs of consensus that can be verified by any node.

Votor Supermayoría

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Rama

Finalidad

The guarantee that a transaction cannot be reversed. Solana offers two levels: optimistic confirmation (~400ms, 66.7%+ stake voted) and full finality (~12-13 seconds, 31+ confirmations rooted). Once a slot is rooted, its transactions are irreversible under the assumption that no more than 1/3 of stake is malicious.

Confirmation Confirmación Optimista

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Siguientes conceptos para explorar

Mantén la cadena de aprendizaje en movimiento en lugar de parar en una sola definición.

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.

Protocolo Base

Alpenglow

A next-generation consensus protocol proposed in SIMD-0326 that aims to collapse Solana's legacy systems (Proof of History, Tower BFT, gossip-based vote propagation) into two streamlined mechanisms: Rotor for data propagation and Votor for off-chain voting. Alpenglow targets reducing transaction finality from ~12.8 seconds to under 150 milliseconds, representing the most significant consensus overhaul in Solana's history.

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Protocolo Base

Alpenglow Certificate

A fast finality certificate produced by the Alpenglow consensus protocol when a supermajority of validators (66.7%+ of stake) have attested to a block through Votor's off-chain voting mechanism. Once an Alpenglow certificate is formed, the block is considered final, reducing finality time from Tower BFT's ~12.8 seconds to a target of under 150 milliseconds. Certificates are compact proofs of consensus that can be verified by any node.

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Protocolo Base

Finalidad

The guarantee that a transaction cannot be reversed. Solana offers two levels: optimistic confirmation (~400ms, 66.7%+ stake voted) and full finality (~12-13 seconds, 31+ confirmations rooted). Once a slot is rooted, its transactions are irreversible under the assumption that no more than 1/3 of stake is malicious.

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Protocolo Base

Feature Gate

The mechanism for activating protocol changes on Solana's mainnet cluster. Each feature is identified by a unique pubkey and activated when validators representing a supermajority of stake signal support by creating a feature account. Feature gates control runtime behavior changes, new syscalls, parameter adjustments, and program upgrades. This system allows gradual, stake-weighted rollout of protocol changes without hard forks.

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Términos relacionados

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Las entradas del glosario se vuelven útiles cuando están conectadas. Estos enlaces son el camino más corto hacia ideas adyacentes.

Protocolo Basealpenglow

Alpenglow

A next-generation consensus protocol proposed in SIMD-0326 that aims to collapse Solana's legacy systems (Proof of History, Tower BFT, gossip-based vote propagation) into two streamlined mechanisms: Rotor for data propagation and Votor for off-chain voting. Alpenglow targets reducing transaction finality from ~12.8 seconds to under 150 milliseconds, representing the most significant consensus overhaul in Solana's history.

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Protocolo Basealpenglow-certificate

Alpenglow Certificate

A fast finality certificate produced by the Alpenglow consensus protocol when a supermajority of validators (66.7%+ of stake) have attested to a block through Votor's off-chain voting mechanism. Once an Alpenglow certificate is formed, the block is considered final, reducing finality time from Tower BFT's ~12.8 seconds to a target of under 150 milliseconds. Certificates are compact proofs of consensus that can be verified by any node.

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Protocolo Basefinality

Finalidad

The guarantee that a transaction cannot be reversed. Solana offers two levels: optimistic confirmation (~400ms, 66.7%+ stake voted) and full finality (~12-13 seconds, 31+ confirmations rooted). Once a slot is rooted, its transactions are irreversible under the assumption that no more than 1/3 of stake is malicious.

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Más en la categoría

Quédate en la misma capa y sigue construyendo contexto.

Estas entradas viven junto al término actual y ayudan a que la página se sienta parte de un grafo de conocimiento más amplio en lugar de un callejón sin salida.

Protocolo Base

Prueba de Historia (PoH)

A clock mechanism that cryptographically proves the passage of time between events. PoH uses a sequential SHA-256 hash chain where each output becomes the next input, creating a verifiable ordering of events without requiring consensus. The leader produces ~400,000 hashes per slot (~400ms), and any validator can verify the sequence in parallel, enabling Solana's high throughput by removing the need for validators to agree on time.

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Protocolo Base

Tower BFT

Solana's custom BFT consensus algorithm built on top of Proof of History. Tower BFT uses PoH as a clock to reduce communication overhead in traditional PBFT from O(n²) to O(n). Validators vote on forks with exponentially increasing lockout periods—each consecutive vote doubles the lockout, making rollbacks progressively more expensive. A fork is finalized when it reaches supermajority (66.7%+ of stake).

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Protocolo Base

Slot

A time window during which a designated leader validator can produce a block. Each slot lasts approximately 400 milliseconds. Slots are numbered sequentially from genesis and grouped into epochs of 432,000 slots (~2-3 days). Not every slot produces a block—a skipped slot means the leader was offline or too slow.

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Protocolo Base

Bloque

A set of entries produced by a leader during a single slot. A block contains transactions bundled into entries, each with a PoH hash proving ordering. Blocks are broken into shreds for network propagation via Turbine. Maximum block size is limited by compute units (48M CU cap per block) rather than byte size.

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