Pith Number

pith:2VCEBBLU

pith:2008:2VCEBBLUHDJ4X7DQMKED7TZ5SI

not attested not anchored not stored refs pending

The Dark UNiverse Explorer (DUNE): Proposal to ESA's Cosmic Vision

Alexandre Refregier, the DUNE collaboration

arxiv:0802.2522 v4 · 2008-02-18 · astro-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{2VCEBBLUHDJ4X7DQMKED7TZ5SI}

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	2026-05-18T04:18:45.258899Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d54440857438d3cbfc7062883fcf3d921e340510acb5c866717cf71009e9fb00

Aliases

arxiv: 0802.2522 · arxiv_version: 0802.2522v4 · doi: 10.48550/arxiv.0802.2522 · pith_short_12: 2VCEBBLUHDJ4 · pith_short_16: 2VCEBBLUHDJ4X7DQ · pith_short_8: 2VCEBBLU

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/2VCEBBLUHDJ4X7DQMKED7TZ5SI \
  | 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: d54440857438d3cbfc7062883fcf3d921e340510acb5c866717cf71009e9fb00

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "02335a175e200f5b8ee291741780cbc4469c23cceacb93b8c1f31b6e8d2cc6eb",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-02-18T17:39:24Z",
    "title_canon_sha256": "be38304a322d0290879954b860815b2f40af0cb009913de5f2e51e549b440c02"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0802.2522",
    "kind": "arxiv",
    "version": 4
  }
}