Pith Number

pith:NRQF7UNG

pith:2005:NRQF7UNGZZLEXQNJYADIKITSKQ

not attested not anchored not stored refs pending

On the nature of the X-ray source in GK Per

Jan-Uwe Ness, Juergen H.M.M. Schmitt, Sonja Vrielmann

arxiv:astro-ph/0505070 v2 · 2005-05-04 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NRQF7UNGZZLEXQNJYADIKITSKQ}

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	2026-07-04T16:52:19.161419Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6c605fd1a6ce564bc1a9c006852272542acd8a0a33fa7b1dcafe5c50b938b8e4

Aliases

arxiv: astro-ph/0505070 · arxiv_version: astro-ph/0505070v2 · doi: 10.48550/arxiv.astro-ph/0505070 · pith_short_12: NRQF7UNGZZLE · pith_short_16: NRQF7UNGZZLEXQNJ · pith_short_8: NRQF7UNG

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/NRQF7UNGZZLEXQNJYADIKITSKQ \
  | 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: 6c605fd1a6ce564bc1a9c006852272542acd8a0a33fa7b1dcafe5c50b938b8e4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1ae7d7b149899f7a643a399d7885835dc57457cd8a62a01fc0b7bb3bec9e15f3",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2005-05-04T12:41:16Z",
    "title_canon_sha256": "79873b72ea4800d613573ea584a5ce7f2c6778515410958cf4473200648cd015"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0505070",
    "kind": "arxiv",
    "version": 2
  }
}