Pith Number

pith:63YL7SPD

pith:2013:63YL7SPDEJDH67E5JRRG34P7HU

not attested not anchored not stored refs pending

On Topological Defects and Cosmological Constant

B. Raychaudhuri, F. Rahaman, M. Kalam

arxiv:1302.2716 v1 · 2013-02-12 · physics.gen-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{63YL7SPDEJDH67E5JRRG34P7HU}

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	2026-05-18T01:51:42.304799Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f6f0bfc9e322467f7c9d4c626df1ff3d1724a4e66410aa9231cfe30300fa1aa4

Aliases

arxiv: 1302.2716 · arxiv_version: 1302.2716v1 · doi: 10.48550/arxiv.1302.2716 · pith_short_12: 63YL7SPDEJDH · pith_short_16: 63YL7SPDEJDH67E5 · pith_short_8: 63YL7SPD

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/63YL7SPDEJDH67E5JRRG34P7HU \
  | 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: f6f0bfc9e322467f7c9d4c626df1ff3d1724a4e66410aa9231cfe30300fa1aa4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ad46e4628f83aa02793cdcd7898fd5d90f261e1e6c2a2762dfcc352b5be081d2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.gen-ph",
    "submitted_at": "2013-02-12T06:32:15Z",
    "title_canon_sha256": "a193bae64b3b408ba8f08c7b2c2982fa53b38a79e1f18942a201a2ade18ecdd7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1302.2716",
    "kind": "arxiv",
    "version": 1
  }
}