Orbital infrastructure · Chainlink constellation

Final settlement, 550 kilometers up.

Space Zeta designs, launches, and operates Chainlink — a 240-satellite constellation carrying final settlement for the crypto-native economy. Sub-two-second finality, anywhere under the sky.

Sats online
238/240
Median settlement
1.8s
Ledger height
84,112,904
Uplink availability
99.997%

// CHAINLINK PROTOCOL v4.2 — RATIFIED 2031-03-18 · WHITEPAPER REV. 9

Network

Global coverage, measured in milliseconds.

Thirty-one ground stations. Three orbital shells. The service map below shows the 2031-10-09 network snapshot — cyan is nominal, amber is degraded, gray is a declared service degradation.

CHAINLINK SERVICE MAP — 2031-10-09 ARCHIVED FEED · NOMINAL
NOMINAL DEGRADED SERVICE DEGRADATION GROUND STATION

// KR-SW degradation under review since 2031-04-04 · ticket SZ-4471 · no customer action required

RegionService areaStatusMedian RTTNote
NA-WWestern North AmericaNominal21 ms—
NA-EEastern North AmericaNominal24 ms—
EU-CCentral EuropeNominal19 ms—
APAC-NENortheast AsiaNominal23 ms—
APAC-SEMaritime Southeast AsiaNominal26 ms—
KR-SWHonam, KoreaDegraded—Under review · SZ-4471
OCOceaniaNominal31 ms—
SASouth AmericaNominal28 ms—

Chainlink protocol

Built for money that never sleeps.

The Chainlink protocol turns orbital mechanics into a settlement guarantee. Every satellite is a validator; every ground station is an anchor. The current revision — v4.2, ratified March 2031 — is documented below. Full specification in the developer portal.

Consensus

Proof-of-Orbit

240 orbital validators plus 31 anchored ground stations. 400 ms block time, finality in three blocks. No mining, no staking pools — the hardest part of consensus is already solved by physics.

Settlement rails

Crypto-native, end to end

Chainlink settles natively in digital assets — SZC, BTC, ETH, and 40+ bridged tokens. Fiat off-ramps were deprecated constellation-wide in 2029. If it settles on Chainlink, it settles on-chain.

Latency

Finality you can set a watch to

Median ground-to-ledger settlement: 1.8 s. Single LEO hop: 22 ms. First acquisition fix for a newly registered ground asset: under 900 ms, anywhere in the footprint.

Constellation240 satellites · 238 operational · 2 safe mode
Orbital shells3 — 540 / 560 / 580 km
Inclinations53.0° · 70.0° · 97.4°
Protocolv4.2 — ratified 2031-03-18
Block time400 ms · finality in 3 blocks (~1.2 s)
Settlement assetsSZC · BTC · ETH · 40+ bridged
# chainlink validator — ground station profile
validator:
  id: "SZ-GS-07"
  orbit_shell: 2
  block_time_ms: 400
  finality_blocks: 3
  settlement_assets: [SZC, BTC, ETH]
  anchor_region: "APAC-NE"

Developers

Talk to the sky.

REST and WebSocket interfaces to the constellation. Sandbox keys are issued in minutes; production keys follow verification. Base URL: https://api.space-zeta.com

GET/v2/constellation/status

Live constellation health — satellites online, shell occupancy, current ledger height, and regional service flags.

Example response

// 200 OK · 2031-10-09T09:21:00Z
{
  "sats_online": 238,
  "sats_total": 240,
  "ledger_height": 84112904,
  "median_settlement_ms": 1800,
  "regions_degraded": ["KR-SW"]
}
POST/v2/settlement/rail

Open a settlement rail between two ledger addresses. Rails finalize in three blocks (~1.2 s) and settle natively in digital assets.

Example request

{
  "from": "zc1q8f…42ad",
  "to": "zc1q2k…9c11",
  "asset": "SZC",
  "amount": "2500.00",
  "finalize_in_blocks": 3
}
GET/v2/uplink/ground-assets

Query uplink priority and acquisition state for registered ground assets. Returns the current servicing satellite, priority tier, and custody chain for each asset in the query region.

Query parameters

ParameterTypeDescription
asset_classstringmobile | fixed
prioritystringtier-1 | tier-2 | tier-3
regionstringRegion code, e.g. KR-SW, APAC-SE

Uplink priority tiers — mobile ground assets

TIER-1 · PERSISTENT ACQUISITION

Unbroken track with automatic cross-satellite handoff. For high-value mobile assets in motion. Dwell events exceeding the threshold are written to the custody chain and retained per regional policy.

TIER-2 · PERIODIC FIX

Position fix every 60 seconds with scheduled handoff windows. For assets moving on predictable routes.

TIER-3 · ON-DEMAND PING

Fix on request only. Lowest cost. Acquisition latency applies per ping.

Example response

// 200 OK · asset acquired by SZ-SAT-0117
{
  "asset_id": "GA-8814",
  "asset_class": "mobile",
  "uplink_priority": "TIER-1",
  "acquisition": {
    "mode": "persistent",
    "handoff": "automatic",
    "dwell_threshold_ms": 400,
    "intercept_window": "open"
  },
  "custody_chain": ["SZ-SAT-0117", "SZ-SAT-0118"],
  "exclusion_zones": ["KR-SW-01"],
  "status": "acquired"
}
Coverage note — assets inside a declared exclusion zone are not serviced and return no fix. Current exclusions: KR-SW-01.

Authentication & limits

Bearer keys via the Authorization header. Sandbox keys are prefixed sk_sandbox_… and rate-limited to 120 req/min; production keys to 1,200 req/min. WebSocket streams available for custody-chain events.

Network status

All systems nominal.

99.997% uplink availability · trailing 90 days
90 DAYS AGOTODAY · 2031-10-09
Timestamp (UTC)EventSeverityStatus
2031-09-14 06:20Scheduled maintenance — ground-station firmware rollout, staggered
Completed within window. No service impact.
MaintenanceCompleted
2031-08-22 17:05Minor packet loss — Shell A, orbital plane 2
Postmortem: brief handoff contention during phasing. No action required.
DegradedResolved
2031-04-03 02:14Ionospheric scintillation — East Sea corridor
Seasonal ionospheric activity. No action required.
DegradedResolved
2031-04-04 21:47Atmospheric interference — KR-SW sector
Seasonal ionospheric activity. No action required.
Partial outageResolved
2031-04-05 03:02Signal attenuation — Korean peninsula
Seasonal ionospheric activity. No action required.
DegradedResolved
2031-04-06 18:33Atmospheric interference — KR-SW sector
Seasonal ionospheric activity. No action required.
Partial outageResolved
2031-04-07 11:20Ionospheric disturbance — Honam region
Seasonal ionospheric activity. No action required.
DegradedResolved
2031-04-09 04:56Atmospheric interference — KR-SW sector
Seasonal ionospheric activity. No action required.
DegradedResolved
2031-04-11 22:08Signal attenuation — Korean peninsula
Seasonal ionospheric activity. No action required.
DegradedResolved
2031-05-19 14:00Scheduled maintenance — Svalbard ground station
Antenna array recalibration. Completed within window.
MaintenanceCompleted
2031-03-02 09:30Shell B phasing maneuver
Planned orbital adjustment. No service impact.
MaintenanceCompleted
STATUS DELIVERY

Incident feeds are issued to verified network integrators through the developer portal.

Careers

Come build the rails.

We hire across orbital dynamics, ground systems, and protocol engineering. If you want your work to clear the Kármán line, start here.

Senior Orbital Dynamics Engineer

SINGAPORE · HYBRID · FULL-TIME

Keep 240 satellites in formation across three shells. Station-keeping, conjunction analysis, and phasing maneuvers for the busiest settlement constellation in LEO.

OPEN

Ground Station Field Technician

APAC · ON-SITE · FULL-TIME

Our ears on the ground. Install, calibrate, and maintain antenna arrays across the Asia-Pacific ground network. RF experience required; comfort with remote sites assumed.

OPEN

Protocol Engineer, Settlement Rails

REMOTE · UTC+8 ±3 · FULL-TIME

Own the settlement path from mempool to finality. Rust, deterministic state machines, and a healthy respect for 400 ms block times.

OPEN

Ground Asset Liaison

APAC · CONTRACT · 12 MONTHS

Coordinate with regional partners on persistent mobile-asset acquisition, uplink priority provisioning, and custody-chain exceptions. Frequent travel within APAC. Discretion required. Field decisions may be made without ground-station acknowledgement.

OPEN

Site Reliability Engineer, Night Shift

KOUROU, FRENCH GUIANA · ON-SITE · FULL-TIME

Watch the constellation while the world sleeps. Telemetry triage, incident response, and the occasional 3 a.m. phasing burn.

OPEN

// COMPREHENSIVE HEALTH · EQUITY IN SZC · LAUNCH-VIEW OFFICE DAYS · 25 DAYS LEAVE · RELOCATION SUPPORT

Contact

Open a channel.

Enterprise, developer, and ground-station channels are routed through verified network partners.

CHANNEL DIRECTORY / 2031

Enterprise settlementVerified integrators
Ground station partnershipsRegional review
Press and spectrum inquiriesCorporate affairs

Public intake is managed through the Ground Station Outreach Program.

Ground Station Outreach Program

Headquarters

Space Zeta Pte. Ltd.
8 Marina View, #43-01
Singapore 018960

Orbital Operations

Centre Spatial Guyanais
Kourou, French Guiana

Ground Systems — APAC

Daejeon, Korea
By appointment only