Pith Number

pith:HAMDLDQP

pith:2000:HAMDLDQPCCE7VW4VMQMRYVYWIZ

not attested not anchored not stored refs pending

Infrared interferometric observations of young stellar objects

D.R. Ciardi, E.A. Lada, G.T. van Belle, M.J. Creech-Eakman, R.L. Akeson

arxiv:astro-ph/0006025 v1 · 2000-06-01 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HAMDLDQPCCE7VW4VMQMRYVYWIZ}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T01:07:46.638273Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3818358e0f1089fadb9564191c571646509e08562283db75647114408bb2d839

Aliases

arxiv: astro-ph/0006025 · arxiv_version: astro-ph/0006025v1 · doi: 10.48550/arxiv.astro-ph/0006025 · pith_short_12: HAMDLDQPCCE7 · pith_short_16: HAMDLDQPCCE7VW4V · pith_short_8: HAMDLDQP

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/HAMDLDQPCCE7VW4VMQMRYVYWIZ \
  | 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: 3818358e0f1089fadb9564191c571646509e08562283db75647114408bb2d839

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1826e1da6d8db1f894c72476608051f05c6dcc51d70c6678913331e080716637",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2000-06-01T19:05:10Z",
    "title_canon_sha256": "72151410bda7df0716a3d5ab99e089a99cb74efd2eabb19c48d0fca40d8c3e19"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0006025",
    "kind": "arxiv",
    "version": 1
  }
}