Pith Number

pith:ASKMQMQJ

pith:2012:ASKMQMQJNZXKHMIQP6X2X2JU5H

not attested not anchored not stored refs pending

Constraints on the Ionizing Efficiency of the First Galaxies

Kristian Finlator, Marcelo A. Alvarez, Michele Trenti

arxiv:1209.1387 v1 · 2012-09-06 · 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{ASKMQMQJNZXKHMIQP6X2X2JU5H}

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	2026-05-18T01:54:39.121824Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0494c832096e6ea3b1107fafabe934e9f978ad7ffa8f2ba0acc3df674cef5558

Aliases

arxiv: 1209.1387 · arxiv_version: 1209.1387v1 · doi: 10.48550/arxiv.1209.1387 · pith_short_12: ASKMQMQJNZXK · pith_short_16: ASKMQMQJNZXKHMIQ · pith_short_8: ASKMQMQJ

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/ASKMQMQJNZXKHMIQP6X2X2JU5H \
  | 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: 0494c832096e6ea3b1107fafabe934e9f978ad7ffa8f2ba0acc3df674cef5558

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7af31b7d042e7881cad7278530fc0f7913b4752941371df27e3be2f76500cc92",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2012-09-06T20:00:00Z",
    "title_canon_sha256": "353c30b5c971f18d3dbc990cd585890dc6bda6f30325f26b95ed2d9601fa4542"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1209.1387",
    "kind": "arxiv",
    "version": 1
  }
}