Pith Number

pith:WB2UT6L4

pith:2013:WB2UT6L45TYH47ZTGJB3QGWRT4

not attested not anchored not stored refs pending

Supermassive Black Hole Formation at High Redshifts via Direct Collapse: Physical Processes in the Early Stage

CU), Isaac Shlosman (UK Lexington), Jun-Hwan Choi (UK Lexington), Mitchell C. Begelman (JILA

arxiv:1304.1369 v2 · 2013-04-04 · 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{WB2UT6L45TYH47ZTGJB3QGWRT4}

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	2026-05-18T01:50:43.013149Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b07549f97cecf07e7f333243b81ad19f2b8a05dc18310318942c3eaa6b9c2e76

Aliases

arxiv: 1304.1369 · arxiv_version: 1304.1369v2 · doi: 10.48550/arxiv.1304.1369 · pith_short_12: WB2UT6L45TYH · pith_short_16: WB2UT6L45TYH47ZT · pith_short_8: WB2UT6L4

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/WB2UT6L45TYH47ZTGJB3QGWRT4 \
  | 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: b07549f97cecf07e7f333243b81ad19f2b8a05dc18310318942c3eaa6b9c2e76

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5e8e3e0a7fb2aafb91cb13a990b3395ae39b65d85f840b3ed97239c7593a4006",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2013-04-04T14:07:49Z",
    "title_canon_sha256": "ab70746656bb9593a8f68a22d3813e63353008323f611a4cedd7670cc2c2cf4f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1304.1369",
    "kind": "arxiv",
    "version": 2
  }
}