Pith Number

pith:Z2V3XK24

pith:2013:Z2V3XK24HFKJXGOQJWIJVNMLJQ

not attested not anchored not stored refs pending

X-ray observation of the shocked red supergiant wind of Cassiopeia A

Jae-Joon Lee, John P. Hughes, Patrick O. Slane, Sangwook Park

arxiv:1304.3973 v2 · 2013-04-15 · astro-ph.HE · 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{Z2V3XK24HFKJXGOQJWIJVNMLJQ}

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	2026-05-18T02:49:39.030788Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ceabbbab5c39549b99d04d909ab58b4c360b5ad7ce074796caea7f491efd2d60

Aliases

arxiv: 1304.3973 · arxiv_version: 1304.3973v2 · doi: 10.48550/arxiv.1304.3973 · pith_short_12: Z2V3XK24HFKJ · pith_short_16: Z2V3XK24HFKJXGOQ · pith_short_8: Z2V3XK24

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/Z2V3XK24HFKJXGOQJWIJVNMLJQ \
  | 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: ceabbbab5c39549b99d04d909ab58b4c360b5ad7ce074796caea7f491efd2d60

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3700edc2286fa2687dc92e98c17b13e8b204d51a5d21259bf1248c38452f6fa9",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2013-04-15T02:48:32Z",
    "title_canon_sha256": "ee6a32e3e16fc40253edf5f738b9281222eccb964eed9b73a020ed6744b1c06c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1304.3973",
    "kind": "arxiv",
    "version": 2
  }
}