Pith Number

pith:U6AEDPB5

pith:2013:U6AEDPB5XDUHZVIPP4S5FUWWPE

not attested not anchored not stored refs pending

AGN proximity zone fossils and the delayed recombination of metal lines

Benjamin D. Oppenheimer, Joop Schaye

arxiv:1303.0019 v2 · 2013-02-28 · astro-ph.CO · astro-ph.GA

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{U6AEDPB5XDUHZVIPP4S5FUWWPE}

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	2026-05-18T01:51:25.753628Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a78041bc3db8e87cd50f7f25d2d2d67917ba83f0e887e85003e36519bfb8018e

Aliases

arxiv: 1303.0019 · arxiv_version: 1303.0019v2 · doi: 10.48550/arxiv.1303.0019 · pith_short_12: U6AEDPB5XDUH · pith_short_16: U6AEDPB5XDUHZVIP · pith_short_8: U6AEDPB5

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/U6AEDPB5XDUHZVIPP4S5FUWWPE \
  | 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: a78041bc3db8e87cd50f7f25d2d2d67917ba83f0e887e85003e36519bfb8018e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6a763338bb834650afc9092f8717f19855ebc409e7d37f099a8426c02c874054",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2013-02-28T21:13:30Z",
    "title_canon_sha256": "6531c487e3ddf3db383dfb772d01cdc825b36737547427d3f7a5d1deabe13433"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1303.0019",
    "kind": "arxiv",
    "version": 2
  }
}