Pith Number

pith:IRY36LHK

pith:2018:IRY36LHKYRI567SFZMPCQDDAJO

not attested not anchored not stored refs pending

The Spatially Resolved Dust-to-Metals Ratio in M101

Adam K. Leroy, Dyas Utomo, I-Da Chiang, J\'er\'emy Chastenet, Karin M. Sandstrom, L. Clifton Johnson

arxiv:1808.07164 v2 · 2018-08-22 · 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{IRY36LHKYRI567SFZMPCQDDAJO}

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	2026-05-18T00:04:29.372112Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4471bf2ceac451df7e45cb1e280c604ba23cace8e0369bd350f42d41776eccd2

Aliases

arxiv: 1808.07164 · arxiv_version: 1808.07164v2 · doi: 10.48550/arxiv.1808.07164 · pith_short_12: IRY36LHKYRI5 · pith_short_16: IRY36LHKYRI567SF · pith_short_8: IRY36LHK

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/IRY36LHKYRI567SFZMPCQDDAJO \
  | 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: 4471bf2ceac451df7e45cb1e280c604ba23cace8e0369bd350f42d41776eccd2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "36b65250645bafad71c120883a62cbe95a2bf7f6d755344b7e08ff88305da2d8",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-08-22T00:30:15Z",
    "title_canon_sha256": "e539c0169a18c09d132e13f7aad15fae3a5f64226b543cc5433995fa109aee58"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.07164",
    "kind": "arxiv",
    "version": 2
  }
}