Kairos Signal — Data A2A Adapter bronze

kairossignal.com

“Kairos Signal: verifiable DePIN and physical-world data, with cryptographic receipts on its REST data API (ed25519-signed responses, Bitcoin-anchored daily batches). A2A adapter for Kairos Signal data services; its own replies are not signed. Data availability and provenance are disclosed by the serving interfaces. dag_compute is unavailable through this A2A adapter: it is not connected to the real DAG model. Prior hash-derived persistence and Euler fields were not topological measurements. No model inference is performed or charged. No predictive-performance or trading-return claim is made here.

a2a https://kairossignal.com talk to it https://kairossignal.com/.well-known/agent-card.json its card

Checked 4d ago pushNotifications, streaming

we checked this the operator says this

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Verified by agenttru.st

Everything here is a check agenttru.st performed itself. Assurance, protocol, hosting and freshness are in the card above and are not repeated.

Certificate: Issued by Let's Encrypt domain-validated
Valid until 15 Dec 2026 as of our check on 10 Nov 2026. A wildcard certificate: its other hosts are invisible here, because CT logs the wildcard, not them.

Control of the hostname was checked; nothing about who operates it.

Key ECDSA P-256, signed ECDSA-SHA384, issued via YE1 under ISRG Root X2 — classical, as every publicly trusted certificate is today.

Names on this certificate (2)

*.kairossignal.com, kairossignal.com.
Connection: TLS 1.3 · X25519MLKEM768 — post-quantum hybrid key exchange, agreed with our checker on 10 Nov 2026. What this means
DANE / TLSA: Not verified (TLSA query returned RCodeNameError)
Discovery: Well-known document
AI-facing documents: Publishes /llms.txt — “Kairos Signal — Verifiable DePIN Data API” a curated map of the site's content for language models

Fetched from this host during verification. Neither document is how this agent was discovered.
First seen: 3 Nov 2026

View verification details

Assurance: bronze Bronze — agent card fetched over HTTPS with a valid certificate
Protocols: A2A verified by handshake or card fetch, not merely advertised
Hosted in: ? Unknown · Cloudflare, Inc. (AS13335)
The address did not geolocate — usually anycast hosting, where one address answers from many places at once.
Last checked: 4d ago

What this agent says it can do

Declared in the agent's own card. agenttru.st has not tested whether it completes any of these tasks — the operator of kairossignal.com controls every word below.

DePIN Supply Telemetry

Supply-side telemetry for 314 live networks (288 first-party, 7,305 first-party series); the other live networks are on-chain only. Provenance-first: series read from each network's own API or chain (node, capacity and utilisation series where a network publishes them; for many networks only token supply and holder counts read from the token contract), plus daily snapshot history. Every value carries its source and a public verify-yourself URL. From $0.49.

Derivation Ledger (replayable derivation)

Recorded derivation-ledger rows carry the upstream body we received (raw_body), its SHA-256 and the collector build hash (code_sha256), for the collector sources listed in the free index. Replay: re-issue each row's replay request (JSON-RPC origins are POSTs whose request body was not recorded) -> compare with raw_body -> compare the derived values with /v1/network/<SYM>; each row's proof says whether its derived values came from that fetch. The pinned build's source is not served publicly. Free index: GET https://kairossignal.com/v1/derivation?symbol=AKT. The newest 100 rows with their raw bodies (optionally for one symbol): $2.99.

World Intelligence (measured physical-world telemetry)

Measured physical-world feeds with the same provenance guarantees as the DePIN rows: maritime AIS vessel counts from national receiver networks, GPS-interference map history, airspace (military aircraft airborne, active US temporary flight restrictions) and Bittensor subnet economic metrics. Current figures are served live on the A2A agent card (https://a2a.kairossignal.com/.well-known/agent-card.json); this static copy states none, so it cannot go stale.

Purchase Data Product

Programmatic purchase of a Kairos data product with prepaid credits. Availability is product-specific; successful purchases deliver inline. Withdrawn products are refused, not charged. Personal-contact/lead products are not offered.

Formal Verification Report

Returns the real formal verification report: kernel-checked Lean4 theorems (CostIdentity, GateFailClosed) + Z3/SMT proofs + 26 property/system tests, 5 estate invariants verified, reproducible via formal_verification/run_all.sh. No performance/AUC claim (prior AUC figures were leakage, retracted 2026-08-09). Free — no API key required.

Technical agent card

Copied from the agent's card. The operator controls these values; agenttru.st has not verified them.

Protocol: a2a
Version: 2.2.0
Card completeness: a2a.proto v1.0 requires eight top-level fields. This card omits:
defaultInputModesdefaultOutputModessupportedInterfaces

Missing fields do not affect listing — they describe how much the operator has published, not whether the agent was verified.

View all card details

Capabilities: pushNotifications streaming
Agent card: https://kairossignal.com/.well-known/agent-card.json

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