Pith Number

pith:QHXWSHJN

pith:2002:QHXWSHJNWKKKSTZRIZRVVYRYUR

not attested not anchored not stored refs pending

Three Epochs of Star Formation in the High Redshift Universe

Jonathan Mackey, Lars Hernquist, Volker Bromm

arxiv:astro-ph/0208447 v2 · 2002-08-23 · 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{QHXWSHJNWKKKSTZRIZRVVYRYUR}

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	2026-07-04T15:45:41.705377Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

81ef691d2db294a94f3146635ae238a4539747fcf235552e73fd253f6e3d64be

Aliases

arxiv: astro-ph/0208447 · arxiv_version: astro-ph/0208447v2 · doi: 10.48550/arxiv.astro-ph/0208447 · pith_short_12: QHXWSHJNWKKK · pith_short_16: QHXWSHJNWKKKSTZR · pith_short_8: QHXWSHJN

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/QHXWSHJNWKKKSTZRIZRVVYRYUR \
  | 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: 81ef691d2db294a94f3146635ae238a4539747fcf235552e73fd253f6e3d64be

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f00916c5b6cb2c57a1d2244bef202cc734636acb2e8a2f5163d7a778158233c1",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2002-08-23T23:43:51Z",
    "title_canon_sha256": "6d2bb32ab0a333e6996f1636fbd0a3ba40796017991fb9b2a6deaeaae4b569af"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0208447",
    "kind": "arxiv",
    "version": 2
  }
}