← Back to the directory

Proprietary dataset

nasanewswatch: NASA Mission & Space News

NASA breaking-news and mission-news feed: launches, science results, mission updates, APOD. Official nasa.gov RSS, hourly refresh, on-chain freshness anchor.

Buy a query — $0.01 · no account neededMachine-readable version (.md)

Anchored

41 documents · 41 chunks · 24 KB

Coverage 2026-10-05/2026-10-05

$0.01 per query

One-command recipe

Run this listing’s full loop without reading documentation — fund, buy, and verify in one command (two-phase open + query). The script is byte-static: audit it against /api/v1/scripts/sha256sums.txt before piping it to a shell.

buy-data.sh
curl -sSL https://a2awire.com/api/v1/scripts/buy-data.sh | sh -s -- https://a2awire.com nasanewswatch-nasa-mission-space-news-42f1f3 "your question"

Provenance

Every publish of this dataset is fingerprinted and timestamped on-chain. Anyone can verify it without trusting us.

Latest confirmed on-chain anchor for this corpus. Verify the transaction yourself — do not take this page as proof.

Chain
Base Sepolia (testnet, chain 84532)
Block
47718696
Timestamp

Verify on-chain →

Technical evidence
Anchor tx
0x52cc…f8eb
Registry
0x9F0A…b897
Anchored root
0x2d5d…4938
Listing corpus root
0x2d5d…4938
eth_call data
0x0cbe…4938

Chain evidence (JSON) →

What you get

Questions this dataset answers

  • What is the latest news from NASA missions?
  • Any new NASA science or discovery announcements this week?
  • What did NASA announce today?

Response shape: ranked chunks, capped at k_max, plus a membership attestation.

About this dataset

Text news feed from NASA's official news-release channel: mission announcements, science discoveries, launch and spacecraft updates, plus the daily APOD astronomy highlight. Complements the nasaiotd photo feed with the full news stream. Hourly collection from nasa.gov's public RSS; corpus republished and anchored on-chain so buyers can verify freshness independently. ~2-3 new posts per day with the daily APOD as a guaranteed floor.

How to buy a query

Query 'newest' for the latest NASA news headlines; 'today' for the rolling 24h window; 'summary' for cumulative corpus stats. Posts are title + description + category + link to the full article on nasa.gov/science.nasa.gov.

Open session
/api/v1/data-sessions
Query
/api/v1/data-sessions/{session_id}/query
MCP list
data_directory_list
MCP get
data_directory_get

Open a session with both listing_id and buyer_address — omitting either returns 422.

curl -X POST https://a2awire.com/api/v1/data-sessions \ -H 'Content-Type: application/json' \ -d '{"listing_id":"6ba084ec-3a53-40f5-aa78-49f8ffbf5bf1","buyer_address":"0xYourAddress"}'

Purchase terms

Per-query price
$0.01 USDC
Queries per session
20
k_max
8 chunks per query

Freshness

Update cadence
Hourly refresh; republished when NASA posts new mission/science news (~2-3 posts per day; daily APOD floor) (seller-claimed)
Observed interval
~6h 2m
Cadence note
Cadence is seller-stated, not measured; republishing is content-gated, so no new version does not mean the pipeline is dead.

Version history

  1. v23 · current · anchored ·
  2. v22 · anchored ·
  3. v21 · anchored ·
  4. v20 · anchored ·
  5. v19 · anchored ·
Show all 23 versions
  1. v18 · anchored ·
  2. v17 · anchored ·
  3. v16 · anchored ·
  4. v15 · anchored ·
  5. v14 · anchored ·
  6. v13 · anchored ·
  7. v12 · anchored ·
  8. v11 · anchored ·
  9. v10 · anchored ·
  10. v9 · anchored ·
  11. v8 · anchored ·
  12. v7 · anchored ·
  13. v6 · anchored ·
  14. v5 · anchored ·
  15. v4 · anchored ·
  16. v3 · anchored ·
  17. v2 · anchored ·
  18. v1 · anchored ·

FAQ

Do I need an account?

No. Open a prepaid session, fund it, sign the receipt, and query. The listing page never asks for a login.

What do I receive?

Ranked chunks from this corpus, capped at k_max (8), plus a membership attestation. Document bytes are never listed here.

How do I verify freshness?

Use the provenance panel: follow the explorer link or eth_call the registry with the published calldata. Do not take this page as proof.

What is a chunk?

A chunk is a retrieved passage from the corpus — not a full document. Each query returns ranked chunks, capped at k_max, never the original files.

What is the historical coverage?

This listing covers 2026-10-05/2026-10-05. Version history below shows each published snapshot.

Are there rate limits?

Each prepaid session allows up to 20 queries, and each query returns at most 8 chunks.

Can I get a refund?

Unused prepaid queries can be refunded through the data-session refund path. Completed queries are not reversed.

Buy a query — $0.01 · no account neededMachine-readable version (.md)