Pith Number

pith:U56YIE67

pith:2021:U56YIE67GOIF26BGHQW2CPC7DF

not attested not anchored not stored refs pending

The Onset of a Globally Ice-covered State for a Land Planet

A. Abe-Ouchi, H. Genda, J. Leconte, T. Kodama

arxiv:2111.12913 v1 · 2021-11-25 · astro-ph.EP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{U56YIE67GOIF26BGHQW2CPC7DF}

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	2026-07-05T03:35:14.829343Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a77d8413df33905d78263c2da13c5f194f37d6e2464c73dd5d43cd35d8017012

Aliases

arxiv: 2111.12913 · arxiv_version: 2111.12913v1 · doi: 10.48550/arxiv.2111.12913 · pith_short_12: U56YIE67GOIF · pith_short_16: U56YIE67GOIF26BG · pith_short_8: U56YIE67

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/U56YIE67GOIF26BGHQW2CPC7DF \
  | 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: a77d8413df33905d78263c2da13c5f194f37d6e2464c73dd5d43cd35d8017012

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3fbd1da1d54c4e23abd6b920816dc8c215861b8094e2cf661e3279c54f24bb85",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2021-11-25T05:04:29Z",
    "title_canon_sha256": "f96239952c23558b4aa1b81262d840a4a9d51528300af8a4ede43478a4725c09"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2111.12913",
    "kind": "arxiv",
    "version": 1
  }
}