Pith Number

pith:54VT7PPH

pith:2015:54VT7PPHXNRP5R457POITLPK6K

not attested not anchored not stored refs pending

A Climate Network Based Stability Index for El Ni\~no Variability

Henk A. Dijkstra, Qing Yi Feng

arxiv:1503.05449 v1 · 2015-03-18 · physics.ao-ph · physics.geo-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	2026-05-18T00:36:25.011055Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ef2b3fbde7bb62fec79dfbdc89adeaf293526e7cd9414e4210b55c02e4bddd83

Aliases

arxiv: 1503.05449 · arxiv_version: 1503.05449v1 · doi: 10.48550/arxiv.1503.05449 · pith_short_12: 54VT7PPHXNRP · pith_short_16: 54VT7PPHXNRP5R45 · pith_short_8: 54VT7PPH

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/54VT7PPHXNRP5R457POITLPK6K \
  | 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: ef2b3fbde7bb62fec79dfbdc89adeaf293526e7cd9414e4210b55c02e4bddd83

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "03180b3b6e742984b9a17fe72594674c6cc1caec5f57b4b40f121fdd2c7e8c5f",
    "cross_cats_sorted": [
      "physics.geo-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.ao-ph",
    "submitted_at": "2015-03-18T15:22:08Z",
    "title_canon_sha256": "6d9042f449dfbe0e1a58cc93c31d4b5eb497515d761cafdb354a2c99a2980e48"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1503.05449",
    "kind": "arxiv",
    "version": 1
  }
}