Pith Number

pith:3UOMEUGR

pith:2009:3UOMEUGRO2BOIH633P2RGTDQM2

not attested not anchored not stored refs pending

The dusty Nebula surrounding HR Car: a Spitzer view

C. S. Buemi, C. Trigilio, G. G. Fazio, G. Umana, J. L. Hora, P. Leto

arxiv:0901.2447 v1 · 2009-01-16 · astro-ph.GA

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{3UOMEUGRO2BOIH633P2RGTDQM2}

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	2026-05-18T04:29:17.356584Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dd1cc250d17682e41fdbdbf5134c70669a791276a62225b3b5d0601fe5d906a8

Aliases

arxiv: 0901.2447 · arxiv_version: 0901.2447v1 · doi: 10.48550/arxiv.0901.2447 · pith_short_12: 3UOMEUGRO2BO · pith_short_16: 3UOMEUGRO2BOIH63 · pith_short_8: 3UOMEUGR

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/3UOMEUGRO2BOIH633P2RGTDQM2 \
  | 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: dd1cc250d17682e41fdbdbf5134c70669a791276a62225b3b5d0601fe5d906a8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c368ad70dd364a470c9e8254534a2ea024d35b00be2a7754c910054899c91911",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2009-01-16T10:44:45Z",
    "title_canon_sha256": "82b77a682bf5d66f104c67b8233747728a3e158fe32383a515732985980a0f82"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0901.2447",
    "kind": "arxiv",
    "version": 1
  }
}