Pith Number

pith:B4TZ6AKI

pith:2009:B4TZ6AKIMXZALNQEKU37KD2RRV

not attested not anchored not stored refs pending

Empirical Estimate of Lyman-alpha Escape Fraction in a Statistical Sample of Lyman-alpha Emitters

(2) Observatoire de Geneve, (3) LAM, (4) OKC Stockholm, (5) CSIC-INTA), Daniel Kunth (1), Daniel Schaerer (2), Goran Ostlin (4), Hakim Atek (1), Jean-Michel Deharveng (3), J. Miguel Mas-Hesse (5) ((1) IAP, Matthew Hayes (2)

arxiv:0906.5349 v2 · 2009-06-29 · 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{B4TZ6AKIMXZALNQEKU37KD2RRV}

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	2026-05-18T02:13:11.943273Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0f279f014865f205b6045537f50f518d7cff36c238d2c7d0a1eedb14d2126226

Aliases

arxiv: 0906.5349 · arxiv_version: 0906.5349v2 · doi: 10.48550/arxiv.0906.5349 · pith_short_12: B4TZ6AKIMXZA · pith_short_16: B4TZ6AKIMXZALNQE · pith_short_8: B4TZ6AKI

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/B4TZ6AKIMXZALNQEKU37KD2RRV \
  | 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: 0f279f014865f205b6045537f50f518d7cff36c238d2c7d0a1eedb14d2126226

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cdd02ed54680a261bc6df8a9e14a04a831a41dd01cd7df7cb64da81cf9b0ad15",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-06-29T20:00:09Z",
    "title_canon_sha256": "9774ef1ed8d8ca2204e390324a93dfd73677c2e0181d98fd84e61b18aad95b14"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0906.5349",
    "kind": "arxiv",
    "version": 2
  }
}