Pith Number

pith:NK34GMTY

pith:2007:NK34GMTYQLOC2GZSZAEJV3G6P3

not attested not anchored not stored refs pending

Constraints on the Sound Speed of Dynamical Dark Energy

Gong-Bo Zhao, Jun-Qing Xia, Tao-Tao Qiu, Xinmin Zhang, Yi-Fu Cai

arxiv:astro-ph/0703202 v2 · 2007-03-09 · astro-ph · hep-ph · hep-th

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NK34GMTYQLOC2GZSZAEJV3G6P3}

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.

Cited by

2 papers in Pith

Quintom Model Perturbations

The Quintom theory of dark energy after DESI DR2

Receipt and verification

First computed	2026-07-04T15:31:25.122160Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6ab7c3327882dc2d1b32c8089aecde7ecc03bdd877c8925e5fa05931570cfb6d

Aliases

arxiv: astro-ph/0703202 · arxiv_version: astro-ph/0703202v2 · doi: 10.48550/arxiv.astro-ph/0703202 · pith_short_12: NK34GMTYQLOC · pith_short_16: NK34GMTYQLOC2GZS · pith_short_8: NK34GMTY

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/NK34GMTYQLOC2GZSZAEJV3G6P3 \
  | 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: 6ab7c3327882dc2d1b32c8089aecde7ecc03bdd877c8925e5fa05931570cfb6d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "983d7dae0e94d37f181e6d47a2ea829d0e5625ad784971efcc2f09b9dd864105",
    "cross_cats_sorted": [
      "hep-ph",
      "hep-th"
    ],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2007-03-09T13:10:07Z",
    "title_canon_sha256": "a64b5728ed605afbfbfe4410851fc4a3a75e4f4bbf4a8105bd1ef4e88d1b7e7b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0703202",
    "kind": "arxiv",
    "version": 2
  }
}