Pith Number

pith:XYOMO6PB

pith:2001:XYOMO6PB4AHUDZZMJGBNQWDQQ3

not attested not anchored not stored refs pending

H2 Formation in Low Metallicity Galaxies

Hideyuki Kamaya, Hiroyuki Hirashita

arxiv:astro-ph/0104479 v2 · 2001-04-30 · 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{XYOMO6PB4AHUDZZMJGBNQWDQQ3}

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	2026-05-18T01:40:44.598818Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

be1cc779e1e00f41e72c4982d8587086dd26b2725c6f4a4e887f420f5a6177d7

Aliases

arxiv: astro-ph/0104479 · arxiv_version: astro-ph/0104479v2 · doi: 10.48550/arxiv.astro-ph/0104479 · pith_short_12: XYOMO6PB4AHU · pith_short_16: XYOMO6PB4AHUDZZM · pith_short_8: XYOMO6PB

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/XYOMO6PB4AHUDZZMJGBNQWDQQ3 \
  | 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: be1cc779e1e00f41e72c4982d8587086dd26b2725c6f4a4e887f420f5a6177d7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "264cb7d24db01b3c5d7dd55c9560fe5300021a7c8c97072797dda56b9a597ddf",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2001-04-30T10:50:00Z",
    "title_canon_sha256": "585d1f7de5e8fd8c02b3ba3486181553ac8cccb2e798acbffb3b8300a3ab7fa1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0104479",
    "kind": "arxiv",
    "version": 2
  }
}