Pith Number

pith:BMPNKAON

pith:2009:BMPNKAONXYA5KO5VNVSNPFHGVQ

not attested not anchored not stored refs pending

The Angular Momentum Problem in Cosmological Simulations of Disk Galaxy Formation

Franziska Piontek, Matthias Steinmetz

arxiv:0909.4156 v1 · 2009-09-23 · 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{BMPNKAONXYA5KO5VNVSNPFHGVQ}

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	2026-05-18T02:11:45.001605Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0b1ed501cdbe01d53bb56d64d794e6ac02c5e1ccb6efddc43850e7e1e621cb70

Aliases

arxiv: 0909.4156 · arxiv_version: 0909.4156v1 · doi: 10.48550/arxiv.0909.4156 · pith_short_12: BMPNKAONXYA5 · pith_short_16: BMPNKAONXYA5KO5V · pith_short_8: BMPNKAON

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/BMPNKAONXYA5KO5VNVSNPFHGVQ \
  | 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: 0b1ed501cdbe01d53bb56d64d794e6ac02c5e1ccb6efddc43850e7e1e621cb70

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cc5160714f8f73dd43823102d8020c5eb345587149d5d1043ab187343e7b590a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-09-23T09:21:50Z",
    "title_canon_sha256": "ced29a35f5eaa70f7bcd091148a68c335c0616b2f635c1a7b4ec2efbaaa803a9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0909.4156",
    "kind": "arxiv",
    "version": 1
  }
}