Pith Number

pith:W3R4VHU7

pith:2005:W3R4VHU7U5IPGCIL6KPKTGCQ2P

not attested not anchored not stored refs pending

Tycho 2 stars with infrared excess in the MSX Point Source Catalogue

A.J. Clarke, R.D. Oudmaijer, S.L Lumsden

arxiv:astro-ph/0508453 v2 · 2005-08-22 · 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{W3R4VHU7U5IPGCIL6KPKTGCQ2P}

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	2026-07-04T15:17:27.914731Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b6e3ca9e9fa750f3090bf29ea99850d3f33a9089978ba85c62e780a16e191081

Aliases

arxiv: astro-ph/0508453 · arxiv_version: astro-ph/0508453v2 · doi: 10.48550/arxiv.astro-ph/0508453 · pith_short_12: W3R4VHU7U5IP · pith_short_16: W3R4VHU7U5IPGCIL · pith_short_8: W3R4VHU7

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/W3R4VHU7U5IPGCIL6KPKTGCQ2P \
  | 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: b6e3ca9e9fa750f3090bf29ea99850d3f33a9089978ba85c62e780a16e191081

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "576b35f3701402ec3ef898d3f637d8b31782e11310951a3216697d3d18020dd4",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2005-08-22T13:58:08Z",
    "title_canon_sha256": "234fa16bbc511d041f65550b8924be31a2252dec76216ec3f393a17636cb2352"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0508453",
    "kind": "arxiv",
    "version": 2
  }
}