Pith Number

pith:MW4IVNAH

pith:2009:MW4IVNAHZOGNUBA6JXOJP4YARM

not attested not anchored not stored refs pending

Lyalpha versus X-ray heating in the high-z IGM

Benedetta Ciardi (MPA), Ruben Salvaterra (OA Brera), Tiziana Di Matteo (CMU)

arxiv:0910.1547 v1 · 2009-10-08 · 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{MW4IVNAHZOGNUBA6JXOJP4YARM}

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	2026-05-18T02:11:25.456916Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

65b88ab407cb8cda041e4ddc97f3008b089329519b5b9308bad7c0614c33c052

Aliases

arxiv: 0910.1547 · arxiv_version: 0910.1547v1 · doi: 10.48550/arxiv.0910.1547 · pith_short_12: MW4IVNAHZOGN · pith_short_16: MW4IVNAHZOGNUBA6 · pith_short_8: MW4IVNAH

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/MW4IVNAHZOGNUBA6JXOJP4YARM \
  | 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: 65b88ab407cb8cda041e4ddc97f3008b089329519b5b9308bad7c0614c33c052

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "16021d7463c5573da9ffc6f12ade30c81864c96e7614c50014df3f11b85fb2cc",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-10-08T16:33:02Z",
    "title_canon_sha256": "968bb32ae54a54ba99a39234d60992c20c1fb706dab96fed37710bbef38fde76"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0910.1547",
    "kind": "arxiv",
    "version": 1
  }
}