Pith Number

pith:4HS7I6PO

pith:2018:4HS7I6POLOG7GGOYTNQYG3KAEW

not attested not anchored not stored refs pending

Global diagnostics of ionospheric absorption during X-ray solar flares based on 8-20MHz noise measured by over-the-horizon radars

A. Marchaudon, A.S. Yukimatu, H. Hu, J.M. Ruohoniemi, J.-P. St-Maurice, M.F. Marcucci, M.J. Kosch, M. Lester, N. Nishitani, O.I. Berngardt, S.G. Shepherd, T. Nagatsuma

arxiv:1812.08878 v1 · 2018-12-20 · physics.geo-ph · physics.space-ph

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4HS7I6POLOG7GGOYTNQYG3KAEW}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-17T23:47:12.202369Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e1e5f479ee5b8df319d89b61836d4025ba723e153ef5cb2f1bd3dbb19b19744f

Aliases

arxiv: 1812.08878 · arxiv_version: 1812.08878v1 · doi: 10.48550/arxiv.1812.08878 · pith_short_12: 4HS7I6POLOG7 · pith_short_16: 4HS7I6POLOG7GGOY · pith_short_8: 4HS7I6PO

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/4HS7I6POLOG7GGOYTNQYG3KAEW \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: e1e5f479ee5b8df319d89b61836d4025ba723e153ef5cb2f1bd3dbb19b19744f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1a2b118d3b99eeb341bcf535ec16d733f71e8e0dca7bb23b26969e852d4b48d7",
    "cross_cats_sorted": [
      "physics.space-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.geo-ph",
    "submitted_at": "2018-12-20T22:50:50Z",
    "title_canon_sha256": "91811b5d75cb4a0fab08e8ad6725f60bb4764a6c192363423010de9fb4e5799e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1812.08878",
    "kind": "arxiv",
    "version": 1
  }
}