Pith Number

pith:IUYADDNS

pith:2004:IUYADDNSATYVB7MWY3LXFRJQQ6

not attested not anchored not stored refs pending

Polarization Signals of the 21 cm Background from the Era of Reionization

Asantha Cooray, Steven Furlanetto (Caltech)

arxiv:astro-ph/0408314 v1 · 2004-08-17 · 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{IUYADDNSATYVB7MWY3LXFRJQQ6}

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	2026-05-18T01:07:32.254165Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4530018db204f150fd96c6d772c5308798e327f71f2af600b36ed70453b2bd7c

Aliases

arxiv: astro-ph/0408314 · arxiv_version: astro-ph/0408314v1 · doi: 10.48550/arxiv.astro-ph/0408314 · pith_short_12: IUYADDNSATYV · pith_short_16: IUYADDNSATYVB7MW · pith_short_8: IUYADDNS

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/IUYADDNSATYVB7MWY3LXFRJQQ6 \
  | 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: 4530018db204f150fd96c6d772c5308798e327f71f2af600b36ed70453b2bd7c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "90e4a30069e86a1c18521e2c5643401329942cc786d67fe4da3684a39d087ea6",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2004-08-17T20:09:52Z",
    "title_canon_sha256": "05fd25414823dfc114ed09a853851f11981f9cfd4f438a84c429bdb754901f22"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0408314",
    "kind": "arxiv",
    "version": 1
  }
}