Pith Number

pith:5HDVKR7L

pith:2012:5HDVKR7L3DAXT2QIN5CWBNLD7M

not attested not anchored not stored refs pending

Angular momentum and galaxy formation revisited

Aaron J. Romanowsky, S. Michael Fall

arxiv:1207.4189 v1 · 2012-07-17 · astro-ph.CO · astro-ph.GA

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{5HDVKR7L3DAXT2QIN5CWBNLD7M}

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	2026-05-18T01:56:17.204171Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e9c75547ebd8c179ea086f4560b563fb021d8ee22f286ef66a553ac5d0ea0a11

Aliases

arxiv: 1207.4189 · arxiv_version: 1207.4189v1 · doi: 10.48550/arxiv.1207.4189 · pith_short_12: 5HDVKR7L3DAX · pith_short_16: 5HDVKR7L3DAXT2QI · pith_short_8: 5HDVKR7L

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/5HDVKR7L3DAXT2QIN5CWBNLD7M \
  | 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: e9c75547ebd8c179ea086f4560b563fb021d8ee22f286ef66a553ac5d0ea0a11

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "41a19155e84659a42c14dc3310e17a15be4001f8a5f78665f566b736d7fa9aae",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2012-07-17T20:00:03Z",
    "title_canon_sha256": "13f2bc5343f1d16531ba6921fbd37ad3eed31951f776be34e302c4e8f9449c32"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1207.4189",
    "kind": "arxiv",
    "version": 1
  }
}