Pith Number

pith:PUSPVP25

pith:2009:PUSPVP25YMXCWKBIDAG52OUIWT

not attested not anchored not stored refs pending

Ionospheric correction of space radar data

Mike Hapgood

arxiv:0909.1659 v1 · 2009-09-09 · physics.space-ph · physics.plasm-ph · physics.soc-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{PUSPVP25YMXCWKBIDAG52OUIWT}

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	2026-05-18T02:11:58.143547Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7d24fabf5dc32e2b2828180ddd3a88b4d7d8cada25a60502c5cc9ea56cdbb08c

Aliases

arxiv: 0909.1659 · arxiv_version: 0909.1659v1 · doi: 10.48550/arxiv.0909.1659 · pith_short_12: PUSPVP25YMXC · pith_short_16: PUSPVP25YMXCWKBI · pith_short_8: PUSPVP25

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/PUSPVP25YMXCWKBIDAG52OUIWT \
  | 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: 7d24fabf5dc32e2b2828180ddd3a88b4d7d8cada25a60502c5cc9ea56cdbb08c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a8cd308404d7bf0fb31c4db84d35cbdaca072d1228d1acde8c15acd6e530ee6a",
    "cross_cats_sorted": [
      "physics.plasm-ph",
      "physics.soc-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.space-ph",
    "submitted_at": "2009-09-09T09:28:48Z",
    "title_canon_sha256": "d023a870338923524b7318b14b28ab94734ce640aa02322369c8a584090a3c50"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0909.1659",
    "kind": "arxiv",
    "version": 1
  }
}