Pith Number

pith:WH7JHKV3

pith:2008:WH7JHKV3OJB5J7Y5K4N7YIIRUB

not attested not anchored not stored refs pending

Cosmological Evolution of a Tachyon-Quintom Model of Dark Energy

Cong-Feng Qiao, Shang-Gang Shi, Yun-Song Piao

arxiv:0812.4022 v2 · 2008-12-22 · astro-ph · hep-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{WH7JHKV3OJB5J7Y5K4N7YIIRUB}

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	2026-07-04T17:16:59.853237Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b1fe93aabb7243d4ff1d571bfc2111a07a3e044907d2e297c7fedca550d304f2

Aliases

arxiv: 0812.4022 · arxiv_version: 0812.4022v2 · doi: 10.48550/arxiv.0812.4022 · pith_short_12: WH7JHKV3OJB5 · pith_short_16: WH7JHKV3OJB5J7Y5 · pith_short_8: WH7JHKV3

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/WH7JHKV3OJB5J7Y5K4N7YIIRUB \
  | 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: b1fe93aabb7243d4ff1d571bfc2111a07a3e044907d2e297c7fedca550d304f2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2efa6c90647472adab1597e12b8daa17bd9d396fcf2265e2d532031b96d1354c",
    "cross_cats_sorted": [
      "hep-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-12-22T13:20:08Z",
    "title_canon_sha256": "a622931f9a9a7098a906c5bacd7965c145ed8d0fd28c11af9d61cb9c84a3e7a7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0812.4022",
    "kind": "arxiv",
    "version": 2
  }
}