Pith Number

pith:5R4CHXQZ

pith:2018:5R4CHXQZLA7JMLUEAZWZLHF2B6

not attested not anchored not stored refs pending

Interacting fermions in an expanding spacetime

H. A. S. Costa, I. G. da Paz, Jonas B. Araujo, L. N. Machado, M. Sampaio

arxiv:1811.00575 v2 · 2018-11-01 · 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{5R4CHXQZLA7JMLUEAZWZLHF2B6}

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	2026-05-17T23:57:35.566499Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ec7823de19583e962e84066d959cba0f8f3cb28e9b1282a0fa55310780401156

Aliases

arxiv: 1811.00575 · arxiv_version: 1811.00575v2 · doi: 10.48550/arxiv.1811.00575 · pith_short_12: 5R4CHXQZLA7J · pith_short_16: 5R4CHXQZLA7JMLUE · pith_short_8: 5R4CHXQZ

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/5R4CHXQZLA7JMLUEAZWZLHF2B6 \
  | 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: ec7823de19583e962e84066d959cba0f8f3cb28e9b1282a0fa55310780401156

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "99662fc4fd97d2d16bb1c5b18a3f8ff765b9126bc6faf363970728bf79fdce4c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "hep-th",
    "submitted_at": "2018-11-01T18:21:28Z",
    "title_canon_sha256": "eec0cbdd99fae237d662ded957f0d8df9a94c2831befb436d1524950a4276af9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1811.00575",
    "kind": "arxiv",
    "version": 2
  }
}