Pith Number

pith:IUHX25XI

pith:2011:IUHX25XIG6C7AUYCMDFG3GS5WY

not attested not anchored not stored refs pending

Modelling Time-varying Dark Energy with Constraints from Latest Observations

Qing-Jun Zhang, Yue-Liang Wu

arxiv:1103.1953 v1 · 2011-03-10 · astro-ph.CO · gr-qc

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{IUHX25XIG6C7AUYCMDFG3GS5WY}

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	2026-05-18T02:02:55.337340Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

450f7d76e83785f0530260ca6d9a5db6135a943a36bb299a991d005ce093ed1a

Aliases

arxiv: 1103.1953 · arxiv_version: 1103.1953v1 · doi: 10.48550/arxiv.1103.1953 · pith_short_12: IUHX25XIG6C7 · pith_short_16: IUHX25XIG6C7AUYC · pith_short_8: IUHX25XI

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/IUHX25XIG6C7AUYCMDFG3GS5WY \
  | 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: 450f7d76e83785f0530260ca6d9a5db6135a943a36bb299a991d005ce093ed1a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "103132624ccb49031a9352f8c7b4138e845fb27fbaf6f87c8c48068749338811",
    "cross_cats_sorted": [
      "gr-qc"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-03-10T07:24:53Z",
    "title_canon_sha256": "79fb8afeb512eeab6ec22911f7fffcfa51957a759bb482a4a4e22152e1e9620a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1103.1953",
    "kind": "arxiv",
    "version": 1
  }
}