Step 01
raw
Pyth tick
pricing-service subscribes to Pyth Hermes via SSE. Raw 18-decimal-normalized OraclePrice arrives sub-second from the Pyth aggregator network.
Keys
priceWeiPow18expopublishTimeconfidence
FIG. 09·3Forexiz · Pricing oracle
Trust · Pyth · Live
Where the price
comes from.
Every Forexiz quote is referenced to a Pyth Network first-party feed. The pricing-service subscribes to Pyth Hermes via SSE; the bid/ask you see is derived from the live Pyth tick plus a per-symbol spread.
Live feedsHermes SSE
11
launch symbols streaming
Tick cadence
< 1 s
Session
24 / 5
Decimals
18
§ 02 · Live gridClick any tile to verify on pyth.network
Major FX + Crosses9 feeds · Hermes SSE
Hermes0.6bp
EUR / USD
EURUSD
Feed ID
0xa995d00b…e81ec30b
Hermes0.9bp
GBP / USD
GBPUSD
Feed ID
0x84c2dde9…3df0a7c1
Hermes0.7bp
USD / JPY
USDJPY
Feed ID
0xef2c98c8…3042fd52
Hermes1.0bp
AUD / USD
AUDUSD
Feed ID
0x67a6f930…22854a80
Hermes1.2bp
USD / CAD
USDCAD
Feed ID
0x3112b03a…eaa2ecca
Hermes1.2bp
USD / CHF
USDCHF
Feed ID
0x0b1e3297…a63e28f8
Hermes1.5bp
NZD / USD
NZDUSD
Feed ID
0x92eea8ba…bfafa4c7
Hermes1.5bp
EUR / GBP
EURGBP
Feed ID
0xc349ff60…7f366d9c
Hermes4.0bp
USD / CNH
USDCNH
Feed ID
0xeef52e09…2e332e66
§ 03 · DerivationPyth tick → Forexiz quote
From feed to fill
Three deterministic steps. Same BigInt math runs in the pricing-service, the matcher, and the audit reproducer — they all derive the same byte-for-byte quote from the same Pyth tick.
Step 02
derived
Forexiz mid
BigInt fixed-point math derives a mid quote per instrument. Normalized to 18 decimals; no float math anywhere in the path.
Keys
midWeisessionOpenfeedAge_ms
Step 03
after spread
Forexiz bid/ask
Per-symbol spread (in basis points) applied to the mid. The bid/ask you see on the trade ticket is the same bid/ask the matching engine uses.
Keys
bidWeiaskWeispreadBps
§ 04 · Why PythThe case against Chainlink for FX
Why Pyth,
not Chainlink.
· First-party publishers
Pyth has direct FX/metals coverage from the actual market makers — Jane Street, Jump, Hudson River, Wintermute, Two Sigma. Chainlink FX feeds are sparser and largely sourced from second-tier aggregators.
· Pull-oracle economics
Pyth's pull architecture lets us subscribe to Hermes at sub-second cadence without paying per-update on every block. Push oracles charge for a price you may never read.
· Confidence intervals
Pyth publishes a confidence interval alongside every price. We use it to widen spreads and trip circuit breakers without ad-hoc heuristics — accept ticks within tolerance, reject the rest.
§ 05 · Session policySun 22:00 → Fri 22:00 UTC
24 / 5 — and
we honor the gap.
FX markets sleep weekends. The pricing-service enforces the 24/5 session window (Sun 22:00 → Fri 22:00 UTC) on every quote. Outside the session, feeds reportdegradedand the trade ticket disables. No quotes are issued from stale data.
Forexiz session windowUTC
Mon
OPEN
Tue
OPEN
Wed
OPEN
Thu
OPEN
Fri
OPEN
Sat
CLSD
Sun
CLSD
Open Sun 22:00 UTC · Closes Fri 22:00 UTC
Audit it yourself
Compare what we publish to what Pyth publishes.
They should always agree, modulo network latency and our spread.