Pith Number

pith:YFU4DHR5

pith:2011:YFU4DHR5HPP62RBLSCJ67NYL7Y

not attested not anchored not stored refs pending

X-ray and optical observations of the unique binary system HD49798/RXJ0648.0-4418

(2) INAF-OA Cagliari, (3) University of Cape Town, (4) INAF-OA ROMA, A.Tiengo (1), F.Pizzolato (1), G.L.Israel (4), Italy, Italy), L.Stella (4) ((1) INAF-IASF MILANO, N.La Palombara (1), P.A.Woudt (3), P.Esposito (2), S.Mereghetti (1), South Africa

arxiv:1105.6227 v1 · 2011-05-31 · 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{YFU4DHR5HPP62RBLSCJ67NYL7Y}

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	2026-05-18T02:01:45.616446Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c169c19e3d3bdfed442b9093efb70bfe3daf5a209cb5510b7fe83fa0a561cc15

Aliases

arxiv: 1105.6227 · arxiv_version: 1105.6227v1 · doi: 10.48550/arxiv.1105.6227 · pith_short_12: YFU4DHR5HPP6 · pith_short_16: YFU4DHR5HPP62RBL · pith_short_8: YFU4DHR5

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/YFU4DHR5HPP62RBLSCJ67NYL7Y \
  | 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: c169c19e3d3bdfed442b9093efb70bfe3daf5a209cb5510b7fe83fa0a561cc15

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "95f2e8fe38ca1d5a6fd45248ab05faf23eebb548d05e0aceeb5eb304e10545de",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2011-05-31T09:52:00Z",
    "title_canon_sha256": "fa096d30410f14692f2fbd194cff1a3699d627001ac457b4d49eddf0447e8cc2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1105.6227",
    "kind": "arxiv",
    "version": 1
  }
}