Pith Number

pith:DCUZJJQV

pith:2012:DCUZJJQV4V7VODO4VWPFAAR2KO

not attested not anchored not stored refs pending

Prospects of observing a quasar HII region during the Epoch of Reionization with redshifted 21cm

Garrelt Mellema, Ilian T. Iliev, Kanan K. Datta, Martina M. Friedrich, Paul R. Shapiro

arxiv:1203.0517 v2 · 2012-03-02 · 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{DCUZJJQV4V7VODO4VWPFAAR2KO}

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	2026-05-18T01:58:15.562132Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

18a994a615e57f570ddcad9e50023a53a551c89e19199e79dd70e1edc791358b

Aliases

arxiv: 1203.0517 · arxiv_version: 1203.0517v2 · doi: 10.48550/arxiv.1203.0517 · pith_short_12: DCUZJJQV4V7V · pith_short_16: DCUZJJQV4V7VODO4 · pith_short_8: DCUZJJQV

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/DCUZJJQV4V7VODO4VWPFAAR2KO \
  | 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: 18a994a615e57f570ddcad9e50023a53a551c89e19199e79dd70e1edc791358b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e6d3a23113a150ffafb8868503e54dd9e1146ad9723a1b15ca1f0cf3577334e9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2012-03-02T16:33:21Z",
    "title_canon_sha256": "dbb72f6e05ae0fe559a671e511efab1ad7a3e2b78e126ccc1e46dd2fac0bc5ac"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1203.0517",
    "kind": "arxiv",
    "version": 2
  }
}