Pith Number

pith:WIDPFTQE

pith:2023:WIDPFTQEO4KDUBZDGCYV3EDFEZ

not attested not anchored not stored refs pending

Very early warning of a moderate-to-strong El Ni\~no in 2023

A. Bunde, H. J. Schellnhuber, J. Fan, J. Ludescher, J. Meng

arxiv:2301.10763 v1 · 2023-01-25 · 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{WIDPFTQEO4KDUBZDGCYV3EDFEZ}

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.

Cited by

1 paper in Pith

Climate network and complexity approach predict neutral ENSO event for 2025

Receipt and verification

First computed	2026-07-05T05:35:54.643992Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b206f2ce0477143a072330b15d9065266284b7c39433129096672b9b801e5a85

Aliases

arxiv: 2301.10763 · arxiv_version: 2301.10763v1 · doi: 10.48550/arxiv.2301.10763 · pith_short_12: WIDPFTQEO4KD · pith_short_16: WIDPFTQEO4KDUBZD · pith_short_8: WIDPFTQE

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/WIDPFTQEO4KDUBZDGCYV3EDFEZ \
  | 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: b206f2ce0477143a072330b15d9065266284b7c39433129096672b9b801e5a85

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cf8f27386115eba89c120f7ac0e4626854815b951297bea552343385a7461f0d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.ao-ph",
    "submitted_at": "2023-01-25T18:56:11Z",
    "title_canon_sha256": "8d17a8666da9c2c0a2ee15cf37725ea3fdd334619c3aa19e0769c5135762e860"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2301.10763",
    "kind": "arxiv",
    "version": 1
  }
}