Pith Number

pith:2EZJS4TA

pith:2011:2EZJS4TA2SMSGBAW4Y7A2UJGZU

not attested not anchored not stored refs pending

Classical radio source propagating into outer HI disc in NGC 3801

(2) Univ. Melbourne, (3) Astron, 4), 4) ((1) CSIRO Astronomy, (4) Kapteyn Inst, Bjorn Emonts (1), Christian Struve (3, Criag Burnett (2), Raffaella Morganti (3, Space Science/ATNF, Univ. Groningen.)

arxiv:1112.5221 v1 · 2011-12-22 · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2EZJS4TA2SMSGBAW4Y7A2UJGZU}

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	2026-05-18T01:59:03.452136Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d132997260d499230416e63e0d5126cd10fc44fc4d06ccc08a578f6142163d0e

Aliases

arxiv: 1112.5221 · arxiv_version: 1112.5221v1 · doi: 10.48550/arxiv.1112.5221 · pith_short_12: 2EZJS4TA2SMS · pith_short_16: 2EZJS4TA2SMSGBAW · pith_short_8: 2EZJS4TA

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/2EZJS4TA2SMSGBAW4Y7A2UJGZU \
  | 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: d132997260d499230416e63e0d5126cd10fc44fc4d06ccc08a578f6142163d0e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5d561e66f54873ede2a5e9867614739151e94f68a4b697bb386f62a0ae3a10b8",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-12-22T02:26:16Z",
    "title_canon_sha256": "142abb5eb1a2c4beab8965c75b8f852a6a092fe26f67a9cd93a5c92b3f3e0ae1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1112.5221",
    "kind": "arxiv",
    "version": 1
  }
}