Pith Number

pith:DFSIU7JJ

pith:2009:DFSIU7JJOJ7ZJDQXZSVISXIYKH

not attested not anchored not stored refs pending

Spin Flips: Variation in the Orientation of Dark Matter Halos over their Merger Histories

Philip Bett

arxiv:0912.4605 v1 · 2009-12-23 · 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{DFSIU7JJOJ7ZJDQXZSVISXIYKH}

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	2026-05-18T01:11:27.796978Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

19648a7d29727f948e17ccaa895d1851f94c380838f7c9f02fc3c9f75b3456f8

Aliases

arxiv: 0912.4605 · arxiv_version: 0912.4605v1 · doi: 10.48550/arxiv.0912.4605 · pith_short_12: DFSIU7JJOJ7Z · pith_short_16: DFSIU7JJOJ7ZJDQX · pith_short_8: DFSIU7JJ

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/DFSIU7JJOJ7ZJDQXZSVISXIYKH \
  | 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: 19648a7d29727f948e17ccaa895d1851f94c380838f7c9f02fc3c9f75b3456f8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2e5cb29ee9fa992f8d092329eea098159ca2a287313318485d29c570e2fad064",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-12-23T11:05:42Z",
    "title_canon_sha256": "4c0fe8b2753a9933772fc0464b1c402dfce54e81a3128be1cce3c74b3e2453de"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0912.4605",
    "kind": "arxiv",
    "version": 1
  }
}