Shared Sequencer : comment un ordonnancement partagé réduit la centralisation des Layer 2

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Le shared sequencer est une architecture dans laquelle plusieurs chaînes Layer 2 confient l'ordonnancement de leurs transactions à un même ensemble d'opérateurs. Contrairement aux séquenceurs propriétaires, l'autorité sur la validation est répartie entre plusieurs entités indépendantes plutôt que concentrée sur une seule. Ce modèle vise à limiter les points de défaillance et la capacité de contrôle unique tout en préservant la rapidité de traitement. Le processus repose sur la sélection des opérateurs, un consensus sur l'ordre des transactions, puis la signature et la publication des blocs. Des mécanismes de résolution des conflits, avec pénalités et rollback partiel, complètent l'approche.

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