Pith Number

pith:YKMFUUG6

pith:2008:YKMFUUG6EKOQAYGLOS7754HYGX

not attested not anchored not stored refs pending

Galaxies appear simpler than expected

A. A. West, D. A. Garcia-Appadoo, J. D. Romano, J. J. Dalcanton, L. Cortese, M. J. Disney

arxiv:0811.1554 v1 · 2008-11-10 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{YKMFUUG6EKOQAYGLOS7754HYGX}

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	2026-05-18T04:34:37.447948Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c2985a50de229d0060cb74bffef0f835f5ef443ce78e477ca53db6d6a953485d

Aliases

arxiv: 0811.1554 · arxiv_version: 0811.1554v1 · doi: 10.48550/arxiv.0811.1554 · pith_short_12: YKMFUUG6EKOQ · pith_short_16: YKMFUUG6EKOQAYGL · pith_short_8: YKMFUUG6

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/YKMFUUG6EKOQAYGLOS7754HYGX \
  | 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: c2985a50de229d0060cb74bffef0f835f5ef443ce78e477ca53db6d6a953485d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "28671e58ce415b729c3c7919a76c0a66196f3dd9a3300a502b1dfb24ee7f0f7b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-11-10T19:38:05Z",
    "title_canon_sha256": "83637e9cd0d2e68bf4ced36626c84f27c4329b5d2996c159bfb7038a83ea5366"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0811.1554",
    "kind": "arxiv",
    "version": 1
  }
}