Pith Number

pith:Q3VSQF2E

pith:2008:Q3VSQF2EBWPDTHOD3TENPDVNMI

not attested not anchored not stored refs pending

Latest supernovae constraints on f(R) cosmologies

F.C. Carvalho, J.S. Alcaniz, J. Santos, N. Pires

arxiv:0808.4152 v1 · 2008-08-29 · 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{Q3VSQF2EBWPDTHOD3TENPDVNMI}

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	2026-05-18T02:35:15.022183Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

86eb2817440d9e399dc3dcc8d78ead622849a395fffd78b77bf00be2dccf7917

Aliases

arxiv: 0808.4152 · arxiv_version: 0808.4152v1 · doi: 10.48550/arxiv.0808.4152 · pith_short_12: Q3VSQF2EBWPD · pith_short_16: Q3VSQF2EBWPDTHOD · pith_short_8: Q3VSQF2E

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/Q3VSQF2EBWPDTHOD3TENPDVNMI \
  | 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: 86eb2817440d9e399dc3dcc8d78ead622849a395fffd78b77bf00be2dccf7917

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b08729cc981cf35a35200a00307342131a8fcb416e830d89dadf3b04f8f3ab5f",
    "cross_cats_sorted": [
      "gr-qc",
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-08-29T19:04:57Z",
    "title_canon_sha256": "c58c2b044a7cb380aa7860c9070b0ee8ba01558ecd9bf1161ba934bf685ca2f1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0808.4152",
    "kind": "arxiv",
    "version": 1
  }
}