Pith Number

pith:ZWCPF4A2

pith:2014:ZWCPF4A2WK23CCRJNDQ7CLYCLB

not attested not anchored not stored refs pending

The Density and Mass of Unshocked Ejecta in Cassiopeia A through Low Frequency Radio Absorption

Lawrence Rudnick, Namir E. Kassim, R. A. Perley, Tracey DeLaney

arxiv:1403.0032 v1 · 2014-03-01 · astro-ph.GA · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ZWCPF4A2WK23CCRJNDQ7CLYCLB}

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	2026-05-18T01:44:21.666517Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cd84f2f01ab2b5b10a2968e1f12f02587d03583b0fec5b566d905964a9340a95

Aliases

arxiv: 1403.0032 · arxiv_version: 1403.0032v1 · doi: 10.48550/arxiv.1403.0032 · pith_short_12: ZWCPF4A2WK23 · pith_short_16: ZWCPF4A2WK23CCRJ · pith_short_8: ZWCPF4A2

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/ZWCPF4A2WK23CCRJNDQ7CLYCLB \
  | 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: cd84f2f01ab2b5b10a2968e1f12f02587d03583b0fec5b566d905964a9340a95

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "09ed7a6cb4132d633473e4e41eda9657f9f22f0e844cf937f44f8717e4381891",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2014-03-01T00:13:13Z",
    "title_canon_sha256": "477741508ee662b74fae9098c2f071c7257553c5c5c7eb2b3e730b14d68c9faf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1403.0032",
    "kind": "arxiv",
    "version": 1
  }
}