Pith Number

pith:QF4WOPZS

pith:2011:QF4WOPZSOPCK2Q5OBSEXFAHXFE

not attested not anchored not stored refs pending

Evidence for Black Hole Growth in Local Analogs to Lyman Break Galaxies

(2) GSFC, (3) MPA), Andrew Ptak (2), Ann Hornschemeier (2), Jianjun Jia (1), Roderik A. Overzier (3), Stephanie M. LaMassa (1) ((1) JHU, Timothy M. Heckman (1)

arxiv:1102.2539 v1 · 2011-02-12 · astro-ph.HE · 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{QF4WOPZSOPCK2Q5OBSEXFAHXFE}

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	2026-05-18T02:03:11.698637Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8179673f3273c4ad43ae0c897280f72919b1a7ecfc899cee204fc8bbf97ca057

Aliases

arxiv: 1102.2539 · arxiv_version: 1102.2539v1 · doi: 10.48550/arxiv.1102.2539 · pith_short_12: QF4WOPZSOPCK · pith_short_16: QF4WOPZSOPCK2Q5O · pith_short_8: QF4WOPZS

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/QF4WOPZSOPCK2Q5OBSEXFAHXFE \
  | 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: 8179673f3273c4ad43ae0c897280f72919b1a7ecfc899cee204fc8bbf97ca057

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c3502bee4d0a90289bb202dc0daad172c8d73aae552072357253e77b3f787b90",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2011-02-12T22:11:12Z",
    "title_canon_sha256": "74e2dd4877f5c55ae102aa5edfe47e7aa974333409b58c3a3e8f668939b01f33"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1102.2539",
    "kind": "arxiv",
    "version": 1
  }
}