Pith Number

pith:F4SIRS4Q

pith:2011:F4SIRS4QOVGUSKDV5UQTO2KDO6

not attested not anchored not stored refs pending

Optical spectroscopy of the quiescent counterpart to EXO 0748-676: a Black Widow scenario?

C.G.Bassa, D.T.H. Steeghs, E.M. Ratti, F. Verbunt, M.A.P. Torres, P.G. Jonker

arxiv:1110.3963 v1 · 2011-10-18 · 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{F4SIRS4QOVGUSKDV5UQTO2KDO6}

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	2026-05-18T02:00:09.349007Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2f2488cb90754d492875ed21376943779c4ecacbd267b4cfb03cc58d4ca59fa3

Aliases

arxiv: 1110.3963 · arxiv_version: 1110.3963v1 · doi: 10.48550/arxiv.1110.3963 · pith_short_12: F4SIRS4QOVGU · pith_short_16: F4SIRS4QOVGUSKDV · pith_short_8: F4SIRS4Q

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/F4SIRS4QOVGUSKDV5UQTO2KDO6 \
  | 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: 2f2488cb90754d492875ed21376943779c4ecacbd267b4cfb03cc58d4ca59fa3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "96d7fdf1da48794f9ff4ac699eb331cbfd49814c0c0604dae4c4d5c3fddf55b3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2011-10-18T12:59:38Z",
    "title_canon_sha256": "4b98ab675add87f6aad075ac2bdc965d56cc72a8b99767038cd463a29b005395"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1110.3963",
    "kind": "arxiv",
    "version": 1
  }
}