Pith Number

pith:WQZ77C3G

pith:2014:WQZ77C3GOOXK4R7WFNRDUID7SC

not attested not anchored not stored refs pending

Accurately Estimating the State of a Geophysical System with Sparse Observations: Predicting the Weather

Daniel Rey, Henry D. I. Abarbanel, Zhe An

arxiv:1405.2579 v1 · 2014-05-11 · nlin.CD · physics.ao-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{WQZ77C3GOOXK4R7WFNRDUID7SC}

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	2026-05-18T02:52:05.184809Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b433ff8b6673aeae47f62b623a207f90a8abfcd20ba0e743cd349c0025ebcce8

Aliases

arxiv: 1405.2579 · arxiv_version: 1405.2579v1 · doi: 10.48550/arxiv.1405.2579 · pith_short_12: WQZ77C3GOOXK · pith_short_16: WQZ77C3GOOXK4R7W · pith_short_8: WQZ77C3G

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/WQZ77C3GOOXK4R7WFNRDUID7SC \
  | 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: b433ff8b6673aeae47f62b623a207f90a8abfcd20ba0e743cd349c0025ebcce8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "15cab13e29545392466633e01ea5727f87cab5698f457622f489cc3e72e9213e",
    "cross_cats_sorted": [
      "physics.ao-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "nlin.CD",
    "submitted_at": "2014-05-11T20:23:09Z",
    "title_canon_sha256": "8bb633a9cfc58cbdfc43cc8e2461248fc312c886c529bde1c36ad025b21959e3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1405.2579",
    "kind": "arxiv",
    "version": 1
  }
}