Pith Number

pith:KR4FKXV3

pith:2021:KR4FKXV3JCYDZQJMORNT6NVKHA

not attested not anchored not stored refs pending

NICER study of pulsed thermal X-rays from Calvera: a neutron star born in the Galactic halo?

L. Baldeschi, M. Rigoselli, R. Taverna, R. Turolla, S. Crestan, S. Mereghetti, S. Zane

arxiv:2110.14930 v1 · 2021-10-28 · 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{KR4FKXV3JCYDZQJMORNT6NVKHA}

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	2026-07-05T03:40:50.838110Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5478555ebb48b03cc12c745b3f36aa380e3eb8a75f7d0ff94bc3ba381bca0285

Aliases

arxiv: 2110.14930 · arxiv_version: 2110.14930v1 · doi: 10.48550/arxiv.2110.14930 · pith_short_12: KR4FKXV3JCYD · pith_short_16: KR4FKXV3JCYDZQJM · pith_short_8: KR4FKXV3

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/KR4FKXV3JCYDZQJMORNT6NVKHA \
  | 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: 5478555ebb48b03cc12c745b3f36aa380e3eb8a75f7d0ff94bc3ba381bca0285

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8bbb9d798b85a52f94053d09390b2086d1a62ed7813e78aa82cd5b5d497f0f4f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2021-10-28T07:40:26Z",
    "title_canon_sha256": "5711c6f416ba804a5e2ba0ff1eaa2a500c8c373670544aa7b6c1b683412cd33c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2110.14930",
    "kind": "arxiv",
    "version": 1
  }
}