Pith Number

pith:IDNOAF2X

pith:2005:IDNOAF2X5IZDDVJEU2UEMY7O4U

not attested not anchored not stored refs pending

Evidence for dust reddening in DLAs identified through CaII H&K absorption

Cambridge), Paul C. Hewett (Institute of Astronomy, Vivienne Wild

arxiv:astro-ph/0505038 v1 · 2005-05-02 · 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{IDNOAF2X5IZDDVJEU2UEMY7O4U}

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	2026-07-04T16:52:18.560769Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

40dae01757ea3231d524a6a84663eee53a21c0e51390e934f88083dd1636f263

Aliases

arxiv: astro-ph/0505038 · arxiv_version: astro-ph/0505038v1 · doi: 10.48550/arxiv.astro-ph/0505038 · pith_short_12: IDNOAF2X5IZD · pith_short_16: IDNOAF2X5IZDDVJE · pith_short_8: IDNOAF2X

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/IDNOAF2X5IZDDVJEU2UEMY7O4U \
  | 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: 40dae01757ea3231d524a6a84663eee53a21c0e51390e934f88083dd1636f263

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "74ea1889558836cfec375364e2653df9dc9dc4da4b69478a282f581ad6429d13",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2005-05-02T20:04:00Z",
    "title_canon_sha256": "ecc9e9ccb59f029c83c81ff3711ea2ee5a0845adf258a297c1dcb6715895cd23"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0505038",
    "kind": "arxiv",
    "version": 1
  }
}