Pith Number

pith:RS2TNZZP

pith:2015:RS2TNZZPB4HSRBZWRNYEJWQYAU

not attested not anchored not stored refs pending

A Bayesian Consistent Dual Ensemble Kalman Filter for State-Parameter Estimation in Subsurface Hydrology

Boujemaa Ait-El-Fquih, Ibrahim Hoteit, Mohamad El Gharamti

arxiv:1511.02178 v1 · 2015-11-04 · physics.data-an · physics.geo-ph · stat.ME

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{RS2TNZZPB4HSRBZWRNYEJWQYAU}

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	2026-05-18T01:27:37.560460Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8cb536e72f0f0f2887368b7044da18053d1b5a11ea9a05cfb1a801c564ae16f7

Aliases

arxiv: 1511.02178 · arxiv_version: 1511.02178v1 · doi: 10.48550/arxiv.1511.02178 · pith_short_12: RS2TNZZPB4HS · pith_short_16: RS2TNZZPB4HSRBZW · pith_short_8: RS2TNZZP

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/RS2TNZZPB4HSRBZWRNYEJWQYAU \
  | 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: 8cb536e72f0f0f2887368b7044da18053d1b5a11ea9a05cfb1a801c564ae16f7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "034eaed20c7c29c0fef19e23972a27b83a9d413d290b9c4ffe6c11ca387e7c49",
    "cross_cats_sorted": [
      "physics.geo-ph",
      "stat.ME"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.data-an",
    "submitted_at": "2015-11-04T23:21:27Z",
    "title_canon_sha256": "33eceb41cc828291da7fdeb2a3da093ce76dbdd947e98c3f8c1a6ce226b3f0af"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1511.02178",
    "kind": "arxiv",
    "version": 1
  }
}