Pith Number

pith:4HBJRLR5

pith:2013:4HBJRLR5DJXBGRBKBHUL5OOB36

not attested not anchored not stored refs pending

Primordial Magnetic Field Limits from CMB Trispectrum - Scalar Modes and Planck Constraints

Kandaswamy Subramanian, Pranjal Trivedi, T. R. Seshadri

arxiv:1312.5308 v1 · 2013-12-18 · astro-ph.CO · gr-qc · hep-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{4HBJRLR5DJXBGRBKBHUL5OOB36}

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	2026-05-18T02:57:16.986975Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e1c298ae3d1a6e13442a09e8beb9c1dfae33e7ab7aa83bfab09386701db0f71c

Aliases

arxiv: 1312.5308 · arxiv_version: 1312.5308v1 · doi: 10.48550/arxiv.1312.5308 · pith_short_12: 4HBJRLR5DJXB · pith_short_16: 4HBJRLR5DJXBGRBK · pith_short_8: 4HBJRLR5

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/4HBJRLR5DJXBGRBKBHUL5OOB36 \
  | 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: e1c298ae3d1a6e13442a09e8beb9c1dfae33e7ab7aa83bfab09386701db0f71c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dc97814f869f7727c6ae7b4303300d13f898b00bb47298781de9f1cf3a4c6732",
    "cross_cats_sorted": [
      "gr-qc",
      "hep-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2013-12-18T20:56:56Z",
    "title_canon_sha256": "e90cb602ec6b55adda64849af59f147f11647a6652b45629ae5b73f3c60dc40e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1312.5308",
    "kind": "arxiv",
    "version": 1
  }
}