Pith Number

pith:TFYRFXSX

pith:2009:TFYRFXSXHRQ6KY5ODZQBVYXA5W

not attested not anchored not stored refs pending

Using the large scale quasar clustering to constrain flat quintessential universes

Ariel Zandivarez, Hector J. Martinez

arxiv:0902.2491 v1 · 2009-02-14 · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{TFYRFXSXHRQ6KY5ODZQBVYXA5W}

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	2026-05-18T02:14:47.772919Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

997112de573c61e563ae1e601ae2e0edb940de79ebc88e2f1298ace205ed9ec7

Aliases

arxiv: 0902.2491 · arxiv_version: 0902.2491v1 · doi: 10.48550/arxiv.0902.2491 · pith_short_12: TFYRFXSXHRQ6 · pith_short_16: TFYRFXSXHRQ6KY5O · pith_short_8: TFYRFXSX

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/TFYRFXSXHRQ6KY5ODZQBVYXA5W \
  | 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: 997112de573c61e563ae1e601ae2e0edb940de79ebc88e2f1298ace205ed9ec7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2c097530ef09c5318ded76772bc065d75e284c2eba852b40fdc294004bff7cfc",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-02-14T20:03:18Z",
    "title_canon_sha256": "8e4a764ac128916a3045924a586aeed7fe4e6d383bece916c6a7f282c0466656"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0902.2491",
    "kind": "arxiv",
    "version": 1
  }
}