Pith Number

pith:PYH6N7JI

pith:2008:PYH6N7JIUCYDHZDZGWTMLU6QI6

not attested not anchored not stored refs pending

Cosmological Constraints from Hubble parameter $H(z)$ and SN Ia observations

(2)Key Laboratory of Particle Astrophysics, (3)Department of Astronomy, 4), (4)Kavli Institute for theoretical Physics China, (5)Department of Physics, Bao-Quan Wang (5)((1)School of Mathematical Sciences, Beijing Normal University, Cheng Hao (1), Chinese Academy of Sciences, Chinese Academy of Sciences (KITPC/ITP-CAS), Dezhou University), Hui Lin (1), Institute of High Energy Physics, Institute of Theoretical Physics, Qiang Yuan (2), Tong-Jie Zhang (3, Xiao Wang (1), Ze-Long Yi (3)

arxiv:0804.3135 v2 · 2008-04-19 · 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{PYH6N7JIUCYDHZDZGWTMLU6QI6}

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	2026-05-18T02:35:22.793675Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7e0fe6fd28a0b033e47935a6c5d3d047b8b7c2f3b84c065bb8d2baf397d6ba99

Aliases

arxiv: 0804.3135 · arxiv_version: 0804.3135v2 · doi: 10.48550/arxiv.0804.3135 · pith_short_12: PYH6N7JIUCYD · pith_short_16: PYH6N7JIUCYDHZDZ · pith_short_8: PYH6N7JI

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/PYH6N7JIUCYDHZDZGWTMLU6QI6 \
  | 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: 7e0fe6fd28a0b033e47935a6c5d3d047b8b7c2f3b84c065bb8d2baf397d6ba99

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d8961cd440e76b89712f418dd5ad33a11ff32f746d3adbcfa62a0ecd5904c9a5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-04-19T09:42:08Z",
    "title_canon_sha256": "d4b40aa78224aa52cc96d3308f2c832b52a27c8aa574a8ce742c276cf01c3ab7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0804.3135",
    "kind": "arxiv",
    "version": 2
  }
}