Pith Number

pith:KHZ2I6DG

pith:2013:KHZ2I6DG645ZISXICYXNGTBUOJ

not attested not anchored not stored refs pending

Chemical constraints on the contribution of Population III stars to cosmic reionization

Elisabeth Vangioni (IAP), Emmanuel Rollinde (IAP), Girish Kulkarni (MPIA), Joseph F. Hennawi (MPIA)

arxiv:1310.0684 v1 · 2013-10-02 · 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{KHZ2I6DG645ZISXICYXNGTBUOJ}

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	2026-05-18T01:47:16.464020Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

51f3a47866f73b944ae8162ed34c347274d2731aae8c2223cc2b1d6664a2f981

Aliases

arxiv: 1310.0684 · arxiv_version: 1310.0684v1 · doi: 10.48550/arxiv.1310.0684 · pith_short_12: KHZ2I6DG645Z · pith_short_16: KHZ2I6DG645ZISXI · pith_short_8: KHZ2I6DG

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/KHZ2I6DG645ZISXICYXNGTBUOJ \
  | 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: 51f3a47866f73b944ae8162ed34c347274d2731aae8c2223cc2b1d6664a2f981

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4fa0fc0f978dd8a3b407a56ae75f14b8332cd5beb4d5f55c1098791c5907d2f2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2013-10-02T12:48:04Z",
    "title_canon_sha256": "eb44ec212ee8dd02c43b935bb2290fea3427861d5d766951a6b84d07f71e3189"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1310.0684",
    "kind": "arxiv",
    "version": 1
  }
}