Pith Number

pith:URGJSLHD

pith:2019:URGJSLHDXIO2IM4JYYJR4CAB74

not attested not anchored not stored refs pending

Why does ammonia not freeze out in the center of pre-stellar cores?

E. Redaelli, L. Bizzocchi, M. Juvela, O. Sipil\"a, P. Caselli

arxiv:1905.02384 v1 · 2019-05-07 · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{URGJSLHDXIO2IM4JYYJR4CAB74}

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	2026-05-17T23:45:26.560641Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a44c992ce3ba1da43389c6131e0801ff1b82fb04e8d36455e57232fdee4e9e8d

Aliases

arxiv: 1905.02384 · arxiv_version: 1905.02384v1 · doi: 10.48550/arxiv.1905.02384 · pith_short_12: URGJSLHDXIO2 · pith_short_16: URGJSLHDXIO2IM4J · pith_short_8: URGJSLHD

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/URGJSLHDXIO2IM4JYYJR4CAB74 \
  | 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: a44c992ce3ba1da43389c6131e0801ff1b82fb04e8d36455e57232fdee4e9e8d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9fdce67c47fff83e217e26bf877696fe9b036cde4e524ff106c3e11a1316f55e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2019-05-07T07:11:12Z",
    "title_canon_sha256": "8069e234ee110f6fc0c7f36311e08bec9bf79842fc8fdf4165c3814bb686a2eb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1905.02384",
    "kind": "arxiv",
    "version": 1
  }
}