Pith Number

pith:FNUKIPMH

pith:2022:FNUKIPMHUBJTDG2KU3SXXBUZSM

not attested not anchored not stored refs pending

4FGL J1120.0-2204: A Unique Gamma-ray Bright Neutron Star Binary with an Extremely Low Mass Proto-White Dwarf

Adam Kawash, Elias Aydi, Elizabeth C. Ferrara, Jay Strader, Kirill V. Sokolovsky, Kristen C. Dage, Laura Chomiuk, Samuel J. Swihart

arxiv:2201.03589 v1 · 2022-01-10 · 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{FNUKIPMHUBJTDG2KU3SXXBUZSM}

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	2026-07-05T04:01:08.069297Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2b68a43d87a053319b4aa6e57b86999338450f83f0dd6779787bd57bd7eb2767

Aliases

arxiv: 2201.03589 · arxiv_version: 2201.03589v1 · doi: 10.48550/arxiv.2201.03589 · pith_short_12: FNUKIPMHUBJT · pith_short_16: FNUKIPMHUBJTDG2K · pith_short_8: FNUKIPMH

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/FNUKIPMHUBJTDG2KU3SXXBUZSM \
  | 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: 2b68a43d87a053319b4aa6e57b86999338450f83f0dd6779787bd57bd7eb2767

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1f29a3f780b0d688fe1087d501090f06a49eaa57bfc807728f46d25487e53710",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2022-01-10T19:00:30Z",
    "title_canon_sha256": "0310af1cf02efbbd2da18b69139ca37464326840bae73e2af63c2f4c07ae0862"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2201.03589",
    "kind": "arxiv",
    "version": 1
  }
}