Pith Number

pith:I2KAK7HD

pith:2010:I2KAK7HDESPQE64JBZJ7HVUUNJ

not attested not anchored not stored refs pending

Constraints on smoothness parameter and dark energy using observational $H(z)$ data

Bao-Quan Wang, Hao-Ran Yu, Hao-Yi Wan, Tian Lan, Tong-Jie Zhang

arxiv:1008.1935 v1 · 2010-08-11 · 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{I2KAK7HDESPQE64JBZJ7HVUUNJ}

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	2026-05-18T02:05:49.350743Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4694057ce3249f027b890e53f3d6946a56640dc4e6972f0c4518a532d246ca05

Aliases

arxiv: 1008.1935 · arxiv_version: 1008.1935v1 · doi: 10.48550/arxiv.1008.1935 · pith_short_12: I2KAK7HDESPQ · pith_short_16: I2KAK7HDESPQE64J · pith_short_8: I2KAK7HD

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/I2KAK7HDESPQE64JBZJ7HVUUNJ \
  | 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: 4694057ce3249f027b890e53f3d6946a56640dc4e6972f0c4518a532d246ca05

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "67b3e3b9594e6771d77f35e949837fe6191b73c0dc7d2988d693d02c45ea49c5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2010-08-11T15:23:41Z",
    "title_canon_sha256": "081e4a68c3e2b3f4fa2c8a6dbbe9658f24b20d378172f3f738345a023c410ba3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1008.1935",
    "kind": "arxiv",
    "version": 1
  }
}