Pith Number

pith:XFZTVW5A

pith:2013:XFZTVW5ABJCQWH2TYVJODBDXYV

not attested not anchored not stored refs pending

Direct measurement of evolving dark energy density and super-accelerating expansion of the universe

CAS, China), Shuang-Nan Zhang (IHEP/NAOC, Yin-Zhe Ma (UBC/CITA)

arxiv:1303.6124 v3 · 2013-03-25 · 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{XFZTVW5ABJCQWH2TYVJODBDXYV}

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	2026-05-18T03:17:44.370936Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b9733adba00a450b1f53c552e18477c5412ed71c2dac84cd6ceb77f0f5f3d729

Aliases

arxiv: 1303.6124 · arxiv_version: 1303.6124v3 · doi: 10.48550/arxiv.1303.6124 · pith_short_12: XFZTVW5ABJCQ · pith_short_16: XFZTVW5ABJCQWH2T · pith_short_8: XFZTVW5A

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/XFZTVW5ABJCQWH2TYVJODBDXYV \
  | 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: b9733adba00a450b1f53c552e18477c5412ed71c2dac84cd6ceb77f0f5f3d729

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c509f0d677b914586c9ceda6ea8d1671f6cd79145e73928b646161ee20444376",
    "cross_cats_sorted": [
      "gr-qc"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2013-03-25T13:29:06Z",
    "title_canon_sha256": "5e9ef4ab250d40577b11d1ef909a0167dcdcdd3b0ad6f6c9cab479b793a01ab2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1303.6124",
    "kind": "arxiv",
    "version": 3
  }
}