Pith Number

pith:SYFP7SFP

pith:2011:SYFP7SFPZQOIDFBPUFRLLZZCFK

not attested not anchored not stored refs pending

Improved Modeling of the Mass Distribution of Disk Galaxies by the Einasto Halo Model

(2) ACGC - University of Cape Town, (3) Institut d'Astrophysique de Paris), Gary A. Mamon (3) ((1) Laboratoire d'Astrophysique de Bordeaux, Laurent Chemin (1), W. J. G. de Blok (2)

arxiv:1109.4247 v1 · 2011-09-20 · 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{SYFP7SFPZQOIDFBPUFRLLZZCFK}

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	2026-05-18T04:12:43.773850Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

960affc8afcc1c81942fa162b5e7222a9ecb7784d5eaea0af4d8b9b169423bb4

Aliases

arxiv: 1109.4247 · arxiv_version: 1109.4247v1 · doi: 10.48550/arxiv.1109.4247 · pith_short_12: SYFP7SFPZQOI · pith_short_16: SYFP7SFPZQOIDFBP · pith_short_8: SYFP7SFP

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/SYFP7SFPZQOIDFBPUFRLLZZCFK \
  | 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: 960affc8afcc1c81942fa162b5e7222a9ecb7784d5eaea0af4d8b9b169423bb4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4428e0881a0f07fd911f06aa3b7ac8b61a24d81b2be460e2ff2762f4b4582352",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-09-20T09:14:06Z",
    "title_canon_sha256": "789a87ddf5f195843896959d90517966a28beb9468c97d2dbc24184971e3bbbe"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1109.4247",
    "kind": "arxiv",
    "version": 1
  }
}