Pith Number

pith:B2ZST5G4

pith:2008:B2ZST5G4TIWEHRJBWEH7INKEWQ

not attested not anchored not stored refs pending

A joint model for the emission and absorption properties of damped Lyman alpha absorption systems

Luke A. Barnes, Martin G. Haehnelt

arxiv:0809.5056 v1 · 2008-09-29 · 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{B2ZST5G4TIWEHRJBWEH7INKEWQ}

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	2026-05-18T04:31:30.025245Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0eb329f4dc9a2c43c521b10ff43544b4282c9f288d92694c232e603e6c9800ec

Aliases

arxiv: 0809.5056 · arxiv_version: 0809.5056v1 · doi: 10.48550/arxiv.0809.5056 · pith_short_12: B2ZST5G4TIWE · pith_short_16: B2ZST5G4TIWEHRJB · pith_short_8: B2ZST5G4

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/B2ZST5G4TIWEHRJBWEH7INKEWQ \
  | 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: 0eb329f4dc9a2c43c521b10ff43544b4282c9f288d92694c232e603e6c9800ec

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "03e9670e9ce2495a15fe1729359cec2443c2bdd5bc1548d02125275adc9afb90",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-09-29T20:00:19Z",
    "title_canon_sha256": "319af35d13ffa36978fc7d80c5b878dc2159f4b59962494cecfe37a03ecb74c1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0809.5056",
    "kind": "arxiv",
    "version": 1
  }
}