Pith Number

pith:TS4QJNIJ

pith:2000:TS4QJNIJKVRULPE5SVREJNNVWZ

not attested not anchored not stored refs pending

Two Highly Polarized QSOs Discovered by 2MASS

B. O. Nelson, D. C. Hines, G. D. Schmidt, P. S. Smith, R. M. Cutri

arxiv:astro-ph/0010173 v1 · 2000-10-10 · 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{TS4QJNIJKVRULPE5SVREJNNVWZ}

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	2026-07-04T14:10:47.248073Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9cb904b509556345bc9d956244b5b5b6556d5fe6943ed150ee90fd4737711761

Aliases

arxiv: astro-ph/0010173 · arxiv_version: astro-ph/0010173v1 · doi: 10.48550/arxiv.astro-ph/0010173 · pith_short_12: TS4QJNIJKVRU · pith_short_16: TS4QJNIJKVRULPE5 · pith_short_8: TS4QJNIJ

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/TS4QJNIJKVRULPE5SVREJNNVWZ \
  | 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: 9cb904b509556345bc9d956244b5b5b6556d5fe6943ed150ee90fd4737711761

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4d7229c730143818317a2dda86391be29854ca858d63a3480d50a042ab2ecaca",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2000-10-10T01:03:37Z",
    "title_canon_sha256": "33c98cac377a32633838f4bf067cca3f2a672cadf8bbb069cf12ba3796b49771"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0010173",
    "kind": "arxiv",
    "version": 1
  }
}