Pith Number

pith:HHVQXXRT

pith:2008:HHVQXXRTXNPJQUYTSBM6L2RACA

not attested not anchored not stored refs pending

Cosmological Evolution of Dirac-Born-Infeld Field

Nobuyoshi Ohta, Zong-Kuan Guo

arxiv:0803.1013 v2 · 2008-03-07 · hep-th · astro-ph · 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{HHVQXXRTXNPJQUYTSBM6L2RACA}

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	2026-05-18T02:35:23.140448Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

39eb0bde33bb5e9853139059e5ea2010111614c7897adf432d447e07c0c7f670

Aliases

arxiv: 0803.1013 · arxiv_version: 0803.1013v2 · doi: 10.48550/arxiv.0803.1013 · pith_short_12: HHVQXXRTXNPJ · pith_short_16: HHVQXXRTXNPJQUYT · pith_short_8: HHVQXXRT

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/HHVQXXRTXNPJQUYTSBM6L2RACA \
  | 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: 39eb0bde33bb5e9853139059e5ea2010111614c7897adf432d447e07c0c7f670

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "12cd62974e67485ad79a14e4d53780fa58e86e2c65810c55b733a3ebac9b4db6",
    "cross_cats_sorted": [
      "astro-ph",
      "gr-qc"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "hep-th",
    "submitted_at": "2008-03-07T02:00:15Z",
    "title_canon_sha256": "3c8b74a5ba8fd8f234da652f6750879f4d28221ff92844858924bf4976c8761e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0803.1013",
    "kind": "arxiv",
    "version": 2
  }
}