Pith Number

pith:RPASMU3D

pith:2012:RPASMU3DME5GRGMTYP67QWKXBZ

not attested not anchored not stored refs pending

Observational constraints on dark energy with a fast varying equation of state

Antonio De Felice, Savvas Nesseris, Shinji Tsujikawa

arxiv:1203.6760 v2 · 2012-03-30 · astro-ph.CO · gr-qc · 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{RPASMU3DME5GRGMTYP67QWKXBZ}

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	2026-05-18T01:58:00.146046Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8bc1265363613a689993c3fdf859570e48548d0cdbad99b8bf0274a528e690db

Aliases

arxiv: 1203.6760 · arxiv_version: 1203.6760v2 · doi: 10.48550/arxiv.1203.6760 · pith_short_12: RPASMU3DME5G · pith_short_16: RPASMU3DME5GRGMT · pith_short_8: RPASMU3D

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/RPASMU3DME5GRGMTYP67QWKXBZ \
  | 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: 8bc1265363613a689993c3fdf859570e48548d0cdbad99b8bf0274a528e690db

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "46d7d42bad53b364bc4ef521f4dd796a172cda3dfb366d9581099edc8684e351",
    "cross_cats_sorted": [
      "gr-qc",
      "hep-ph",
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2012-03-30T10:02:11Z",
    "title_canon_sha256": "31702bd638d4864683f31cb368b6c9d7c5b3646a85bd096bf8aee1d48a5782dc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1203.6760",
    "kind": "arxiv",
    "version": 2
  }
}