Pith Number

pith:MQYRFUHZ

pith:1998:MQYRFUHZF7XPTACIAZMWWPFUNJ

not attested not anchored not stored refs pending

The X-ray emission of the polar BL Hydri

B.T. Gaensicke, C. Done, D. de Martino, G. Matt, J.M. Bonnet-Bidaud, K. Beuermann, K. Mukai, M. Guainazzi, M. Mouchet, R. Barcaroli, T. Belloni

arxiv:astro-ph/9803291 v1 · 1998-03-25 · 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{MQYRFUHZF7XPTACIAZMWWPFUNJ}

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	2026-07-04T14:15:44.302783Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

643112d0f92feef9804806596b3cb46a7e49edb451147f067ab038078c79fac8

Aliases

arxiv: astro-ph/9803291 · arxiv_version: astro-ph/9803291v1 · doi: 10.48550/arxiv.astro-ph/9803291 · pith_short_12: MQYRFUHZF7XP · pith_short_16: MQYRFUHZF7XPTACI · pith_short_8: MQYRFUHZ

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/MQYRFUHZF7XPTACIAZMWWPFUNJ \
  | 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: 643112d0f92feef9804806596b3cb46a7e49edb451147f067ab038078c79fac8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5787a67c556d52035a0726d0c9bfe769c1dd73f2c021d4c8e3cb75d6562fb945",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1998-03-25T10:07:18Z",
    "title_canon_sha256": "3946b951ac56c0ce84d0c6dacb7d79d08f4c59d24e0c1a50b001535d1e99e38a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9803291",
    "kind": "arxiv",
    "version": 1
  }
}