Pith Number

pith:WZ4UGO2C

pith:2007:WZ4UGO2C47FZ2UNOSWKOVSACYL

not attested not anchored not stored refs pending

Supernovae Constraints on DGP Model and Cosmic Topology

M.J. Reboucas

arxiv:astro-ph/0702428 v2 · 2007-02-16 · astro-ph · gr-qc · 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{WZ4UGO2C47FZ2UNOSWKOVSACYL}

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	2026-05-18T00:59:12.615760Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b679433b42e7cb9d51ae9594eac802c2da63189a33d281303767532345bb35ce

Aliases

arxiv: astro-ph/0702428 · arxiv_version: astro-ph/0702428v2 · doi: 10.48550/arxiv.astro-ph/0702428 · pith_short_12: WZ4UGO2C47FZ · pith_short_16: WZ4UGO2C47FZ2UNO · pith_short_8: WZ4UGO2C

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/WZ4UGO2C47FZ2UNOSWKOVSACYL \
  | 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: b679433b42e7cb9d51ae9594eac802c2da63189a33d281303767532345bb35ce

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "62eca3bd44a742fd2e63e0930c95885fb6349254e2461abe0772f3116a391d45",
    "cross_cats_sorted": [
      "gr-qc",
      "hep-th"
    ],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2007-02-16T02:00:55Z",
    "title_canon_sha256": "c01b5ae2287bc03cebc344800517ebaae4eb4c36c27633412b2a3df8cdd8dbad"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0702428",
    "kind": "arxiv",
    "version": 2
  }
}