Pith Number

pith:DD4ISCI5

pith:2011:DD4ISCI5HKPCAHLOEH5XEVSJD4

not attested not anchored not stored refs pending

A Journal for the Astronomical Computing Community?

Norman Gray, Robert G Mann

arxiv:1103.1982 v1 · 2011-03-10 · astro-ph.IM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DD4ISCI5HKPCAHLOEH5XEVSJD4}

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	2026-05-18T04:27:03.232602Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

18f889091d3a9e201d6e21fb7256491f06ce70a01d5e42c716ab5e2f21ed647b

Aliases

arxiv: 1103.1982 · arxiv_version: 1103.1982v1 · doi: 10.48550/arxiv.1103.1982 · pith_short_12: DD4ISCI5HKPC · pith_short_16: DD4ISCI5HKPCAHLO · pith_short_8: DD4ISCI5

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/DD4ISCI5HKPCAHLOEH5XEVSJD4 \
  | 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: 18f889091d3a9e201d6e21fb7256491f06ce70a01d5e42c716ab5e2f21ed647b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "874806dcae3e0c26d93ce6307777b2de35c33185321bbe92eea77ca6aa229df0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2011-03-10T10:19:32Z",
    "title_canon_sha256": "a4a3d0923871cfb7273061c948afa78414004885d21487b5f4df88e0599d3826"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1103.1982",
    "kind": "arxiv",
    "version": 1
  }
}