Pith Number

pith:7Q36LNEW

pith:2024:7Q36LNEWGW4W5UGUDSE7ILLR5F

not attested not anchored not stored refs pending

Data Assimilation with Machine Learning Surrogate Models: A Case Study with FourCastNet

Daniel Sanz-Alonso, Melissa Adrian, Rebecca Willett

arxiv:2405.13180 v2 · 2024-05-21 · eess.SP · cs.LG · nlin.CD · physics.ao-ph · stat.AP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7Q36LNEWGW4W5UGUDSE7ILLR5F}

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	2026-07-05T10:12:16.454656Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fc37e5b49635b96ed0d41c89f42d71e976697bb6dd62071229578c1250dbac20

Aliases

arxiv: 2405.13180 · arxiv_version: 2405.13180v2 · doi: 10.48550/arxiv.2405.13180 · pith_short_12: 7Q36LNEWGW4W · pith_short_16: 7Q36LNEWGW4W5UGU · pith_short_8: 7Q36LNEW

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/7Q36LNEWGW4W5UGUDSE7ILLR5F \
  | 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: fc37e5b49635b96ed0d41c89f42d71e976697bb6dd62071229578c1250dbac20

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1749e5fd13ab1ca85b33df61512dd75f5d48b30ac9d3513f3213f83054659d3b",
    "cross_cats_sorted": [
      "cs.LG",
      "nlin.CD",
      "physics.ao-ph",
      "stat.AP"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "eess.SP",
    "submitted_at": "2024-05-21T20:06:12Z",
    "title_canon_sha256": "1a4cb9faf453ecd556eed41805d0517e53ffa594f4e93c71236af103d11fc634"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2405.13180",
    "kind": "arxiv",
    "version": 2
  }
}