Pith Number

pith:QNXFOUG5

pith:2019:QNXFOUG56DM63YIEX76Q6MTZWH

not attested not anchored not stored refs pending

Solution of the 3D density-driven groundwater flow problem with uncertain porosity and permeability

Alexander Litvinenko, David Keyes, Dmitry Logashenko, Gabriel Wittum, Raul Tempone

arxiv:1906.01632 v2 · 2019-05-31 · math.NA · cs.NA · physics.comp-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{QNXFOUG56DM63YIEX76Q6MTZWH}

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	2026-05-17T23:43:32.517503Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

836e5750ddf0d9ede104bffd0f3279b1c86b47bdc85ce958df30cfa847735143

Aliases

arxiv: 1906.01632 · arxiv_version: 1906.01632v2 · doi: 10.48550/arxiv.1906.01632 · pith_short_12: QNXFOUG56DM6 · pith_short_16: QNXFOUG56DM63YIE · pith_short_8: QNXFOUG5

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/QNXFOUG56DM63YIEX76Q6MTZWH \
  | 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: 836e5750ddf0d9ede104bffd0f3279b1c86b47bdc85ce958df30cfa847735143

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c0338eb98d644fc3a07f9b344966c0531ecc3dc33dc723def6bdf8f60e181ff9",
    "cross_cats_sorted": [
      "cs.NA",
      "physics.comp-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2019-05-31T23:39:12Z",
    "title_canon_sha256": "2b8e43584c769d93775ed3895c25b5d14d638f067c51a263a6b59abe31ff349b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1906.01632",
    "kind": "arxiv",
    "version": 2
  }
}