Pith Number

pith:32NHWMXO

pith:2017:32NHWMXOHKWC7RSH2HABBPP2HH

not attested not anchored not stored refs pending

Using Velocity Dispersion to Estimate Halo Mass: Is the Local Group in Tension with $\Lambda$CDM?

Aaron S.G. Robotham, Chris Power, Claudia del P. Lagos, Pascal J. Elahi, Rhys Poulton

arxiv:1712.01989 v2 · 2017-12-06 · astro-ph.GA · 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{32NHWMXOHKWC7RSH2HABBPP2HH}

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	2026-05-18T00:22:02.586111Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

de9a7b32ee3aac2fc647d1c010bdfa39da78e576e5ba254aa8bb0f304897b9ac

Aliases

arxiv: 1712.01989 · arxiv_version: 1712.01989v2 · doi: 10.48550/arxiv.1712.01989 · pith_short_12: 32NHWMXOHKWC · pith_short_16: 32NHWMXOHKWC7RSH · pith_short_8: 32NHWMXO

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/32NHWMXOHKWC7RSH2HABBPP2HH \
  | 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: de9a7b32ee3aac2fc647d1c010bdfa39da78e576e5ba254aa8bb0f304897b9ac

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "696deb316708b73fe652f97623c45c521bd1b7fab5bc6fae64a09e1a2c3eeb3c",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2017-12-06T01:05:10Z",
    "title_canon_sha256": "6220c81f40f5448abd896077c7d3bee5919a3225cba285568e14c5b05e7f959b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1712.01989",
    "kind": "arxiv",
    "version": 2
  }
}