Pith Number

pith:WK5UPGHC

pith:2001:WK5UPGHCJHSBHKCEZ73KHXOBS6

not attested not anchored not stored refs pending

Chandra Observations of Embedded Young Stellar Objects

Katsuji Koyama

arxiv:astro-ph/0109307 v1 · 2001-09-19 · 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{WK5UPGHCJHSBHKCEZ73KHXOBS6}

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	2026-07-04T14:11:29.060887Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b2bb4798e249e413a844cff6a3ddc197ab6365177f690810e149db1aed13102c

Aliases

arxiv: astro-ph/0109307 · arxiv_version: astro-ph/0109307v1 · doi: 10.48550/arxiv.astro-ph/0109307 · pith_short_12: WK5UPGHCJHSB · pith_short_16: WK5UPGHCJHSBHKCE · pith_short_8: WK5UPGHC

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/WK5UPGHCJHSBHKCEZ73KHXOBS6 \
  | 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: b2bb4798e249e413a844cff6a3ddc197ab6365177f690810e149db1aed13102c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c7debcd7771fd96315d07d6f81ed2d0184eda95280178de3ff85d6e823c46fa0",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2001-09-19T09:17:14Z",
    "title_canon_sha256": "e49b2672d9f4a36adab4aefc13488fd5b9bc5e253a8c9edcbc61182d14899f5f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0109307",
    "kind": "arxiv",
    "version": 1
  }
}