Pith Number

pith:JTPFXVCY

pith:2026:JTPFXVCYL3HUTKOIJQI7WE6UQB

not attested not anchored not stored refs pending

A Diagnostic Software Suite for Auditing Learned PDE Simulators

Lennon J. Shikhman

arxiv:2606.18200 v1 · 2026-06-16 · cs.MS · cs.NA · math.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{JTPFXVCYL3HUTKOIJQI7WE6UQB}

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	2026-06-19T16:10:50.767802Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4cde5bd4585ecf49a9c84c11fb13d480640ba5f6d36d22b4da1b9365cdc78743

Aliases

arxiv: 2606.18200 · arxiv_version: 2606.18200v1 · doi: 10.48550/arxiv.2606.18200 · pith_short_12: JTPFXVCYL3HU · pith_short_16: JTPFXVCYL3HUTKOI · pith_short_8: JTPFXVCY

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/JTPFXVCYL3HUTKOIJQI7WE6UQB \
  | 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: 4cde5bd4585ecf49a9c84c11fb13d480640ba5f6d36d22b4da1b9365cdc78743

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ad3dba50cd33c04070a1839c66ae30a8416aecd1989c870254ecd49fb4324e71",
    "cross_cats_sorted": [
      "cs.NA",
      "math.NA",
      "physics.comp-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.MS",
    "submitted_at": "2026-06-16T17:30:25Z",
    "title_canon_sha256": "f51243dfac6ed82ceea2dafbe39685f05b02d2ef523ec66407f7d2cf619cbb18"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.18200",
    "kind": "arxiv",
    "version": 1
  }
}