Pith Number

pith:USR3BD5V

pith:2019:USR3BD5VMUSFWJ377QPHOOVY4Y

not attested not anchored not stored refs pending

HST/STIS analysis of the first main sequence pulsar CU Vir

A. Pigulski, A. Tichy, C. Trigilio, G. W. Henry, I. Krtickova, J. Janik, J. Krticka, M. Prvak, O. Kochukhov, P. Leto, T. Luftinger, Z. Mikulasek

arxiv:1903.07331 v1 · 2019-03-18 · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{USR3BD5VMUSFWJ377QPHOOVY4Y}

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	2026-05-17T23:46:47.144558Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a4a3b08fb565245b277ffc1e773ab8e612859f40534f91b3ed710b2bb53d45f3

Aliases

arxiv: 1903.07331 · arxiv_version: 1903.07331v1 · doi: 10.48550/arxiv.1903.07331 · pith_short_12: USR3BD5VMUSF · pith_short_16: USR3BD5VMUSFWJ37 · pith_short_8: USR3BD5V

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/USR3BD5VMUSFWJ377QPHOOVY4Y \
  | 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: a4a3b08fb565245b277ffc1e773ab8e612859f40534f91b3ed710b2bb53d45f3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3fbae8ec8b2a39fdc9cfb3e05538bd93e3f66b04c3d17da821ca1962de058e8e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2019-03-18T09:46:43Z",
    "title_canon_sha256": "d72d576240c0c98a759dfa046b555fb9a6decbbb2ec8b194b99364dcf21b053b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1903.07331",
    "kind": "arxiv",
    "version": 1
  }
}