Pith Number

pith:VRN45WNK

pith:2015:VRN45WNKIWOA7RAWLOVDDG2XI6

not attested not anchored not stored refs pending

Quantification of summertime water ice deposition on the Martian north polar ice cap

Adrian J. Brown, Patricio Becerra, Shane Byrne, Wendy M. Calvin

arxiv:1501.02040 v1 · 2015-01-09 · 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{VRN45WNKIWOA7RAWLOVDDG2XI6}

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	2026-05-18T02:29:44.956599Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ac5bced9aa459c0fc4165baa319b5747979d2f1a1a0d7602922344d225e9ef77

Aliases

arxiv: 1501.02040 · arxiv_version: 1501.02040v1 · doi: 10.48550/arxiv.1501.02040 · pith_short_12: VRN45WNKIWOA · pith_short_16: VRN45WNKIWOA7RAW · pith_short_8: VRN45WNK

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/VRN45WNKIWOA7RAWLOVDDG2XI6 \
  | 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: ac5bced9aa459c0fc4165baa319b5747979d2f1a1a0d7602922344d225e9ef77

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2f156e6a3e2e151c9b0ad2ef323d19f1a403f0efce9244c77775ba6c84f4f9bd",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2015-01-09T04:17:25Z",
    "title_canon_sha256": "cc79d3a18db2878dd4c9ca63e564fadeb3edc8efc3b784cb1f0b73f278355c26"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1501.02040",
    "kind": "arxiv",
    "version": 1
  }
}