Pith Number

pith:4OAFASOA

pith:2014:4OAFASOA6DPOMNB2LNJE7YSJVD

not attested not anchored not stored refs pending

A Comparison of X-ray and Optical Emission in Cassiopeia A

Daniel J. Patnaude, Robert A. Fesen

arxiv:1403.5812 v1 · 2014-03-23 · 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{4OAFASOA6DPOMNB2LNJE7YSJVD}

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	2026-05-18T01:43:52.125575Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e3805049c0f0dee6343a5b524fe249a8e25524e2456035c86bc71210c9aa9d19

Aliases

arxiv: 1403.5812 · arxiv_version: 1403.5812v1 · doi: 10.48550/arxiv.1403.5812 · pith_short_12: 4OAFASOA6DPO · pith_short_16: 4OAFASOA6DPOMNB2 · pith_short_8: 4OAFASOA

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/4OAFASOA6DPOMNB2LNJE7YSJVD \
  | 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: e3805049c0f0dee6343a5b524fe249a8e25524e2456035c86bc71210c9aa9d19

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a91252e6df1bd0d42d18188238c8a923bdafca06baa07f11e2634761b44ab546",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2014-03-23T22:46:08Z",
    "title_canon_sha256": "9927563af5869901ce1172fdf9bc21ffc51ee6810a7da2f3f27983f81357fa32"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1403.5812",
    "kind": "arxiv",
    "version": 1
  }
}