Pith Number

pith:W6YFE5RL

pith:2019:W6YFE5RLH4KKFBC4JJ4NWTMSUI

not attested not anchored not stored refs pending

A New View of the Size-Mass Distribution of Galaxies: Using $r_{20}$ and $r_{80}$ instead of $r_{50}$

Arjen van der Wel, Lamiya Mowla, Pieter van Dokkum, Tim B. Miller

arxiv:1901.05017 v1 · 2019-01-15 · 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{W6YFE5RLH4KKFBC4JJ4NWTMSUI}

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	2026-05-17T23:53:20.894796Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b7b052762b3f14a2845c4a78db4d92a2177f7bc5630f18602b4c7726f50282fb

Aliases

arxiv: 1901.05017 · arxiv_version: 1901.05017v1 · doi: 10.48550/arxiv.1901.05017 · pith_short_12: W6YFE5RLH4KK · pith_short_16: W6YFE5RLH4KKFBC4 · pith_short_8: W6YFE5RL

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/W6YFE5RLH4KKFBC4JJ4NWTMSUI \
  | 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: b7b052762b3f14a2845c4a78db4d92a2177f7bc5630f18602b4c7726f50282fb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "eb47b5b604eb8434346d4ac7391a652101145498a181989aef30fdfddefb7417",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2019-01-15T19:00:10Z",
    "title_canon_sha256": "fc55b6e68916c45ac1d272e93a70f8d223dbea10efb7d59fde1595811b21de09"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1901.05017",
    "kind": "arxiv",
    "version": 1
  }
}