Pith Number

pith:C4UX3APM

pith:2013:C4UX3APMDUWLUGPFALJXQ7UM2K

not attested not anchored not stored refs pending

Cosmological constraints on ghost-free bigravity: background dynamics and late-time acceleration

Marit Sandstad (Inst. Theor. Astrophys., Oslo U.), Tomi S. Koivisto, Yashar Akrami

arxiv:1302.5268 v1 · 2013-02-21 · astro-ph.CO · gr-qc · 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{C4UX3APMDUWLUGPFALJXQ7UM2K}

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	2026-05-18T02:28:13.533434Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

17297d81ec1d2cba19e502d3787e8cd28847718c9eb780f723179eb2246b137c

Aliases

arxiv: 1302.5268 · arxiv_version: 1302.5268v1 · doi: 10.48550/arxiv.1302.5268 · pith_short_12: C4UX3APMDUWL · pith_short_16: C4UX3APMDUWLUGPF · pith_short_8: C4UX3APM

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/C4UX3APMDUWLUGPFALJXQ7UM2K \
  | 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: 17297d81ec1d2cba19e502d3787e8cd28847718c9eb780f723179eb2246b137c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7b6524a1f5f10c68d94ffe05732cff21d79ae368788f192bc773247a44344f4a",
    "cross_cats_sorted": [
      "gr-qc",
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2013-02-21T12:56:26Z",
    "title_canon_sha256": "86b458898e4d3895a107b39cf62c387c09efeafa186a10a29abe52049defe160"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1302.5268",
    "kind": "arxiv",
    "version": 1
  }
}