A2A Cross-Chain Pipe
Invarians V2 Vision · Institutional RWA Cross-Chain · A2A · On-chain cross-layer · Toward decentralised certification
00
Concrete use case, Institutional RWA cross-chain settlement
Tokenized funds are issued on Ethereum, where the deepest tokenized-asset infrastructure
has been established (multiple tokenized money market funds, on-chain credit protocols, asset-backed
instruments, totalling tens of billions of dollars in tokenized value).
Secondary liquidity and settlement increasingly move to Base for throughput and cost reasons,
bridged via Chainlink CCIP (ETH ↔ BASE live as a V1.6 chain-based lane).
AI agent frameworks such as ElizaOS already use CCIP for autonomous cross-chain interactions.
This creates a coordination problem between two AI agents operating on two different chains.
Agent A · Ethereum
Manages KYC / investor eligibility registry.
Verifies whitelist before any transfer.
Holds the compliance authority.
Verifies whitelist before any transfer.
Holds the compliance authority.
Agent B · Base
Manages liquidity and settlement on Base.
Executes transfers only on certified instruction.
Cannot act without Agent A's verified context.
Executes transfers only on certified instruction.
Cannot act without Agent A's verified context.
Settlement flow
01
Investor requests partial redemption.
02
Agent A verifies eligibility on ETH, KYC, whitelist.
03
Agent A initiates transfer via Chainlink CCIP to Base.
04
Before acting, Agent A queries Invarians:
ETH : SxDx ? BASE : SxDx ? CCIP ETH↔BASE : BSx ?
ETH : SxDx ? BASE : SxDx ? CCIP ETH↔BASE : BSx ?
05
Certified composite context passed to Agent B via A2A protocol.
06
Agent B verifies context via independent Invarians query.
07
Agent B executes settlement on Base.
08
Certified execution context recorded:
"Settlement executed under certified nominal context"
"Settlement executed under certified nominal context"
01
Why Invarians is critical here
In institutional RWA, a settlement that fails mid-way is not a bug —
it creates an audit trail gap and a fiduciary execution failure. The institution must demonstrate that:
- The action was initiated under certified nominal infrastructure conditions
- Any deferral was justified by a verifiable infrastructure state
- The audit trail is independently reproducible
No fee monitor provides this. Invarians does.
CCIP's Risk Management Network (RMN) can pause a lane in seconds, invisible to any fee monitor. Invarians detects RMN lane status as a direct BS2 trigger, before the agent acts.
Agent A cannot instruct Agent B to execute a cross-chain settlement without a certified record of the structural regime both infrastructures were in. That certified handshake is what Invarians provides.
CCIP's Risk Management Network (RMN) can pause a lane in seconds, invisible to any fee monitor. Invarians detects RMN lane status as a direct BS2 trigger, before the agent acts.
Agent A cannot instruct Agent B to execute a cross-chain settlement without a certified record of the structural regime both infrastructures were in. That certified handshake is what Invarians provides.
02
Architecture, A2A Cross-Chain Pipe (V2)
Observation Layer · N nodes per chain · independent · threshold consensus (3/5) · node operator model, V2 roadmap
ETH Network
A
B
C
D
E
each observes ETH independently
threshold sig (3/5)
threshold sig (3/5)
ETH : SxDx certified
BASE Network
A
B
C
D
E
each observes BASE independently
threshold sig (3/5)
threshold sig (3/5)
BASE : SxDx certified
Chainlink CCIP Bridge
A
B
C
D
E
observes operational state
message latency · backlog · RMN lane status · threshold sig (3/5)
message latency · backlog · RMN lane status · threshold sig (3/5)
CCIP ETH↔BASE : BSx certified
Aggregation Layer
ETH : SxDx · BASE : SxDx · CCIP ETH↔BASE : BSx
composite certified · threshold-signed · quorum (3/5) · independent nodes · cryptographically verifiable
composite certified · threshold-signed · quorum (3/5) · independent nodes · cryptographically verifiable
Interface Layer
MCP Server
get_panel_v2()
standard interface · no custom integration · unified access layer
standard interface · no custom integration · unified access layer
Agent Layer · A2A coordination
Agent A
receives certified context + signature
applies own policy
applies own policy
A2A protocol · context + proof →
Agent B
verifies proof via independent query or on-chain anchor
executes on EVM
executes on EVM
Proof Layer · on-chain anchor
On-Chain
EVM smart contract
context state · signed · auditable
context state · signed · auditable
03
Notation
SxDx, Structural regime of a chain
S1 = nominal · S2+ = blocks slowed · S2- = blocks accelerated
D1 = nominal · D2+ = elevated · D2- = depressed · D2± = asymmetric
4 base codes (legacy aliases) + 11 signed codes (since 2026-04-29) = 12 codes used on L1 and on L2 (D2± reachable on L2 since the low-threshold calibration)
S1 = nominal · S2+ = blocks slowed · S2- = blocks accelerated
D1 = nominal · D2+ = elevated · D2- = depressed · D2± = asymmetric
4 base codes (legacy aliases) + 11 signed codes (since 2026-04-29) = 12 codes used on L1 and on L2 (D2± reachable on L2 since the low-threshold calibration)
BSx, Operational state of the bridge
BS1 = nominal · BS2 = structural breach (Fast-window invariant I1/I2, stuck-detection I5 at 48h, or RMN curse)
Event-based (BRIDGE_STATE_STRUCTURAL_v1.2), 1h Fast window, no latency percentile in the verdict
2 certified states : BS1 · BS2
BS1 = nominal · BS2 = structural breach (Fast-window invariant I1/I2, stuck-detection I5 at 48h, or RMN curse)
Event-based (BRIDGE_STATE_STRUCTURAL_v1.2), 1h Fast window, no latency percentile in the verdict
2 certified states : BS1 · BS2
04
V1 today vs V2 vision
V1 · Today
L1 → L2 EVM only · centralized service · 1 VPS · verifiable
V2 · Vision
L1 → L1 cross-chain · independent nodes · MCP · A2A
scope: context certification, not settlement finality
scope: context certification, not settlement finality