Pith Number

pith:VWA775ZM

pith:2018:VWA775ZMS4JVAV4JUZMAQLWLFA

not attested not anchored not stored refs pending

A new transformative framework for data assimilation and calibration of physical ionosphere-thermosphere models

Piyush M. Mehta, Richard Linares

arxiv:1804.04088 v1 · 2018-04-08 · physics.ao-ph · physics.data-an · 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{VWA775ZMS4JVAV4JUZMAQLWLFA}

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	2026-05-18T00:00:56.504109Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ad81fff72c9713505789a658082ecb283b5433324aab14625f5c83ff5de54834

Aliases

arxiv: 1804.04088 · arxiv_version: 1804.04088v1 · doi: 10.48550/arxiv.1804.04088 · pith_short_12: VWA775ZMS4JV · pith_short_16: VWA775ZMS4JVAV4J · pith_short_8: VWA775ZM

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/VWA775ZMS4JVAV4JUZMAQLWLFA \
  | 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: ad81fff72c9713505789a658082ecb283b5433324aab14625f5c83ff5de54834

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c2d2c29f07f53f96975a4e8018d135a7bfffe633839655bb3ec497a902201425",
    "cross_cats_sorted": [
      "physics.data-an",
      "physics.space-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.ao-ph",
    "submitted_at": "2018-04-08T18:34:02Z",
    "title_canon_sha256": "3a27c9c11a0360cd17379c77e2fbde4cf1cafb94d11e167901669dd04541e8bd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.04088",
    "kind": "arxiv",
    "version": 1
  }
}