Pith Number

pith:WBA4B37J

pith:2018:WBA4B37J5D7KP7PNXPPC3JRYMV

not attested not anchored not stored refs pending

A closer look at the Barboza-Alcaniz equation of state parametrization

Anindita Mondal, Subhajit Saha

arxiv:1804.04007 v1 · 2018-04-09 · 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{WBA4B37J5D7KP7PNXPPC3JRYMV}

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	2026-05-18T00:18:42.398435Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b041c0efe9e8fea7fdedbbde2da638657772733a5e79b087434cb815678affd0

Aliases

arxiv: 1804.04007 · arxiv_version: 1804.04007v1 · doi: 10.48550/arxiv.1804.04007 · pith_short_12: WBA4B37J5D7K · pith_short_16: WBA4B37J5D7KP7PN · pith_short_8: WBA4B37J

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/WBA4B37J5D7KP7PNXPPC3JRYMV \
  | 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: b041c0efe9e8fea7fdedbbde2da638657772733a5e79b087434cb815678affd0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "549954a796c8f825bd32d4a07d46be01032ad51e9e68da421530ee01a4309228",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2018-04-09T19:01:39Z",
    "title_canon_sha256": "1cfa0c019be3f12f426f965a4cc1fc92ebf3b359b5a440c24f5deb3f974bcee0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.04007",
    "kind": "arxiv",
    "version": 1
  }
}