Pith Number

pith:FJDTGZLV

pith:2008:FJDTGZLVFGU2NMLTBA5JBTDBF4

not attested not anchored not stored refs pending

The Lyman-alpha forest at redshifts 0.1 -- 1.6: good agreement between a large hydrodynamic simulation and HST spectra

David Kirkman, David Tytler, Michael L. Norman, Pascal Paschos, Tridivesh Jena

arxiv:0802.3730 v1 · 2008-02-26 · 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{FJDTGZLVFGU2NMLTBA5JBTDBF4}

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	2026-05-18T02:16:00.862586Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2a4733657529a9a6b173083a90cc612f0155fdf965e37f67d9b5f84fd477be46

Aliases

arxiv: 0802.3730 · arxiv_version: 0802.3730v1 · doi: 10.48550/arxiv.0802.3730 · pith_short_12: FJDTGZLVFGU2 · pith_short_16: FJDTGZLVFGU2NMLT · pith_short_8: FJDTGZLV

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/FJDTGZLVFGU2NMLTBA5JBTDBF4 \
  | 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: 2a4733657529a9a6b173083a90cc612f0155fdf965e37f67d9b5f84fd477be46

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9076a7e594784139a730c92f77c2b6c5703846843ca9d45c761337dee29e4e85",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-02-26T01:46:27Z",
    "title_canon_sha256": "30a796f8548339a63ae7967324c1bed59f75ecde82f2dc76f7b7a4b9c28623b9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0802.3730",
    "kind": "arxiv",
    "version": 1
  }
}