Pith Number

pith:UC2WOXUU

pith:2010:UC2WOXUUBTCS2WNC7B3GTMQTDW

not attested not anchored not stored refs pending

The Last Eight-Billion Years of Intergalactic SiIV Evolution

(2) UC Santa Cruz, (3) STScI, (4) U Chicago), Christopher Thom (3), Hsiao-Wen Chen (4) ((1) MIT Kavli Institute for Astrophysics, J. Xavier Prochaska (2), Kathy L Cooksey (1), Space Research, UCO/Lick Observatory

arxiv:1011.0750 v2 · 2010-11-02 · 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{UC2WOXUUBTCS2WNC7B3GTMQTDW}

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	2026-05-18T02:04:53.474228Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a0b5675e940cc52d59a2f87669b2131d81f293be839e709e0fdcc7acd082e368

Aliases

arxiv: 1011.0750 · arxiv_version: 1011.0750v2 · doi: 10.48550/arxiv.1011.0750 · pith_short_12: UC2WOXUUBTCS · pith_short_16: UC2WOXUUBTCS2WNC · pith_short_8: UC2WOXUU

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/UC2WOXUUBTCS2WNC7B3GTMQTDW \
  | 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: a0b5675e940cc52d59a2f87669b2131d81f293be839e709e0fdcc7acd082e368

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3edcb124321823a74da9ea02f72c4bdf3e1e7c127923906e000066fe29084acf",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2010-11-02T20:29:35Z",
    "title_canon_sha256": "a15b158ab1a592878a31e242c72682a2abc0d29a15f6fd3a35a547d951e7b500"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1011.0750",
    "kind": "arxiv",
    "version": 2
  }
}