Pith Number

pith:VBCOCUPN

pith:2012:VBCOCUPND3BE4VBH7SELK3BWNV

not attested not anchored not stored refs pending

Constraints of the variation of fundamental couplings and sensitivity of the equation of state of dense matter

C. J. A. P. Martins, M. A. Perez-Garcia

arxiv:1203.0399 v2 · 2012-03-02 · astro-ph.CO · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VBCOCUPND3BE4VBH7SELK3BWNV}

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	2026-05-18T02:21:17.364555Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a844e151ed1ec24e5427fc88b56c366d55338dd90eb596b86cd579a19c8690da

Aliases

arxiv: 1203.0399 · arxiv_version: 1203.0399v2 · doi: 10.48550/arxiv.1203.0399 · pith_short_12: VBCOCUPND3BE · pith_short_16: VBCOCUPND3BE4VBH · pith_short_8: VBCOCUPN

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/VBCOCUPND3BE4VBH7SELK3BWNV \
  | 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: a844e151ed1ec24e5427fc88b56c366d55338dd90eb596b86cd579a19c8690da

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a4607ac7417f227f362fb1d7d4f9eca2514ed19075a7acfad854892172ec28fc",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2012-03-02T09:23:14Z",
    "title_canon_sha256": "84d536f94e36e772a858fa53a9aa880bd32e4935694b9fd803ddf768ce75afb8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1203.0399",
    "kind": "arxiv",
    "version": 2
  }
}