Pith Number

pith:72Q7RS5D

pith:2012:72Q7RS5D6QBYCWFUCRXGK4ZQHD

not attested not anchored not stored refs pending

The hard X-ray emission of X Per

A. Santangelo, I. Kreykenbohm, R. Doroshenko, V. Doroshenko

arxiv:1202.6271 v2 · 2012-02-28 · 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{72Q7RS5D6QBYCWFUCRXGK4ZQHD}

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	2026-05-18T03:59:28.881405Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fea1f8cba3f4038158b4146e65733038d65ff5c053be2cca7169b1d00ed00733

Aliases

arxiv: 1202.6271 · arxiv_version: 1202.6271v2 · doi: 10.48550/arxiv.1202.6271 · pith_short_12: 72Q7RS5D6QBY · pith_short_16: 72Q7RS5D6QBYCWFU · pith_short_8: 72Q7RS5D

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/72Q7RS5D6QBYCWFUCRXGK4ZQHD \
  | 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: fea1f8cba3f4038158b4146e65733038d65ff5c053be2cca7169b1d00ed00733

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bd0e9891666763c650899ebcb8983093508dcd53365448a2ba39a388ee36874a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2012-02-28T16:24:28Z",
    "title_canon_sha256": "33e09517260d0c1bdd25b73e2cc53e581dcbd0a768f6415c3a2c3b969b552e60"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1202.6271",
    "kind": "arxiv",
    "version": 2
  }
}