Pith Number

pith:M3FF7Z2A

pith:2021:M3FF7Z2AAMRH5GPMDXP7ZRLLTO

not attested not anchored not stored refs pending

New Measurement of the Vertical Atmospheric Density Profile from Occultations of the Crab Nebula with X-Ray Astronomy Satellites Suzaku and Hitomi

Hitoshi Fujiwara, Koji Mori, Kosuke Sato, Makoto S. Tashiro, Satoru Katsuda, Yoshitaka Ishisaki, Yoshitomo Maeda, Yukikatsu Terada, Yuko Motizuki

arxiv:2103.07602 v1 · 2021-03-13 · astro-ph.EP · 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{M3FF7Z2AAMRH5GPMDXP7ZRLLTO}

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	2026-07-05T02:37:38.680888Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

66ca5fe74003227e99ec1ddffcc56b9b824860d230b448be084f6306b0d7b92f

Aliases

arxiv: 2103.07602 · arxiv_version: 2103.07602v1 · doi: 10.48550/arxiv.2103.07602 · pith_short_12: M3FF7Z2AAMRH · pith_short_16: M3FF7Z2AAMRH5GPM · pith_short_8: M3FF7Z2A

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/M3FF7Z2AAMRH5GPMDXP7ZRLLTO \
  | 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: 66ca5fe74003227e99ec1ddffcc56b9b824860d230b448be084f6306b0d7b92f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "283c7acc2034d37849a0428e3dfc91f192f8abf2ff8966b7a841a6c3bb613c94",
    "cross_cats_sorted": [
      "astro-ph.IM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2021-03-13T02:39:39Z",
    "title_canon_sha256": "ae20992ec570eb17b80b7e8eae18d49452c84c9725a59657bd3ba594d976668c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2103.07602",
    "kind": "arxiv",
    "version": 1
  }
}