Pith Number

pith:4TPSKAMO

pith:2018:4TPSKAMOCUENMCBGI2X34PC723

not attested not anchored not stored refs pending

Using Network Theory and Machine Learning to predict El Ni\~no

Crist\'obal L\'opez, Emilio Hern\'andez-Garc\'ia, Henk A. Dijkstra, Peter D. Nooteboom, Qing Yi Feng

arxiv:1803.10076 v2 · 2018-03-27 · physics.ao-ph

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

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	2026-05-18T00:08:15.162331Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e4df25018e1508d6082646afbe3c5fd6e2208ae49186c5d1d5a1d0d0d681e7c5

Aliases

arxiv: 1803.10076 · arxiv_version: 1803.10076v2 · doi: 10.48550/arxiv.1803.10076 · pith_short_12: 4TPSKAMOCUEN · pith_short_16: 4TPSKAMOCUENMCBG · pith_short_8: 4TPSKAMO

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/4TPSKAMOCUENMCBGI2X34PC723 \
  | 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: e4df25018e1508d6082646afbe3c5fd6e2208ae49186c5d1d5a1d0d0d681e7c5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "730b53dba1abd3b0d5a704f9899b9bd5b105c63fcba8231f8fe7ba43b8b9c55c",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "physics.ao-ph",
    "submitted_at": "2018-03-27T13:42:31Z",
    "title_canon_sha256": "18aeece04bc65aaf52345dfdf30fd04f0acd405c126ece4e39d7d51956666b4e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1803.10076",
    "kind": "arxiv",
    "version": 2
  }
}