Pith Number

pith:SQH5O62M

pith:2020:SQH5O62MNKP4Z3V5JPVGCZCAO6

not attested not anchored not stored refs pending

Optical spectroscopy of 4U 1812-12: an ultra-compact X-ray binary seen through an H II region

F. Jim\'enez-Ibarra, J. A. Fern\'andez-Ontiveros, J. Casares, J. Garc\'ia-Rojas, M. A. P. Torres, M. Armas Padilla, N. Degenaar, T. Mu\~noz-Darias, V. A. C\'uneo

arxiv:2009.07300 v1 · 2020-09-15 · astro-ph.HE · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SQH5O62MNKP4Z3V5JPVGCZCAO6}

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	2026-07-05T02:03:45.241394Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

940fd77b4c6a9fcceebd4bea61644077851ec8417901078d38e713824c484d75

Aliases

arxiv: 2009.07300 · arxiv_version: 2009.07300v1 · doi: 10.48550/arxiv.2009.07300 · pith_short_12: SQH5O62MNKP4 · pith_short_16: SQH5O62MNKP4Z3V5 · pith_short_8: SQH5O62M

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/SQH5O62MNKP4Z3V5JPVGCZCAO6 \
  | 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: 940fd77b4c6a9fcceebd4bea61644077851ec8417901078d38e713824c484d75

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0e317c9a7b0b2ba2d505488df0c89b1a9d9d46b71abed44f42ff5f753c782edc",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2020-09-15T18:05:11Z",
    "title_canon_sha256": "1181b94958632d6d613975e3f82eef02adfd0246f328623682639095a4408708"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2009.07300",
    "kind": "arxiv",
    "version": 1
  }
}