Pith Number

pith:UICXWHXI

pith:2009:UICXWHXITJ3SJVPURCMBB654OQ

not attested not anchored not stored refs pending

The cool side of Lyman Alpha Emitters

Alexandro Saro, Andrea Ferrara, Pratika Dayal

arxiv:0907.4989 v2 · 2009-07-29 · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UICXWHXITJ3SJVPURCMBB654OQ}

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	2026-05-18T02:12:46.924323Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a2057b1ee89a7724d5f4889810fbbc74281ab238415dee2ec563397767bb93e1

Aliases

arxiv: 0907.4989 · arxiv_version: 0907.4989v2 · doi: 10.48550/arxiv.0907.4989 · pith_short_12: UICXWHXITJ3S · pith_short_16: UICXWHXITJ3SJVPU · pith_short_8: UICXWHXI

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/UICXWHXITJ3SJVPURCMBB654OQ \
  | 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: a2057b1ee89a7724d5f4889810fbbc74281ab238415dee2ec563397767bb93e1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "41d6a776a31ba446d1e14ff9d1e317ae5a024b0de009b794c44cdec17f7a9184",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-07-29T09:15:48Z",
    "title_canon_sha256": "48ddffb125bb56aa8adb8b71cf044ed082ed1e3e4238bf27d9ff685abf35ede0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0907.4989",
    "kind": "arxiv",
    "version": 2
  }
}