Module reputation 

Peer reputation system — R0..R4 tiers computed from QoS history.

Tiers

Tier	Name	Criteria
R0	Quarantine	fault_score ≥ FAULT_BLACKLISTED; isolated from trusted peers
R1	Fledgling	Node age < FLEDGLING_DAYS (7 days in the network)
R2	Reliable	uptime_ratio ≥ 0.95 over 30 d; pos_pass_rate ≥ 0.98
R3	Trusted	uptime_ratio ≥ 0.99 over 90 d; pos_pass_rate ≥ 0.995
R4	Pillar	uptime_ratio ≥ 0.999 over 365 d; pos_pass_rate ≥ 0.999

Reputation score

A continuous reputation_score: i64 underlies the tier computation. Score changes:

Event	Delta
PoS challenge passed	+PASS_INC
PoS challenge failed	−FAIL_DEC
24 h verified uptime	+UPTIME_INC
bp pause --eta respected	0
bp pause --eta overrun	−LATE_PENALTY
Eviction without notice	score reset→0, R0 lock for 30 days

Placement preference

When selecting Pouch peers for fragment distribution (PutFile), the scheduler prefers peers whose reputation tier is ≥ the sender’s own tier. R0 peers only receive fragments from other R0 senders.

Structs

ReputationRecord

Per-peer reputation state persisted for the daemon’s lifetime.

ReputationStore

In-memory registry of per-peer ReputationRecords.

Enums

ReputationTier

Discrete reputation tier for a Pouch peer.

Constants

FAIL_DEC

Score decrement per failed PoS challenge.

FLEDGLING_DAYS

Days since first-seen after which a node graduates from Fledgling (R1).

LATE_PENALTY

Penalty for overrunning a bp pause --eta deadline.

PASS_INC

Score increment per passed PoS challenge.

R2_POS_RATE

Minimum PoS pass rate required for R2.

R2_UPTIME

Minimum uptime ratio (0–1) required for R2.

R2_WINDOW_DAYS

Observation window for R2 criteria (days).

R3_POS_RATE

Minimum PoS pass rate required for R3.

R3_UPTIME

Minimum uptime ratio required for R3.

R3_WINDOW_DAYS

Observation window for R3 criteria (days).

R4_POS_RATE

Minimum PoS pass rate required for R4.

R4_UPTIME

Minimum uptime ratio required for R4.

R4_WINDOW_DAYS

Observation window for R4 criteria (days).

UPTIME_INC

Score increment per 24 h of verified uptime.