Pith Number

pith:IW4K3AUD

pith:2019:IW4K3AUDZXMLKH2OQOBNQXJH7K

not attested not anchored not stored refs pending

Using X-Ray Morphological Parameters to Strengthen Galaxy Cluster Mass Estimates via Machine Learning

Daisuke Nagai, Dominique Eckert, John A. ZuHone, Klaus Dolag, Lorenzo Lovisari, Michelle Ntampaka, Sheridan B. Green

arxiv:1908.02765 v2 · 2019-08-07 · 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{IW4K3AUDZXMLKH2OQOBNQXJH7K}

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	2026-07-05T00:11:21.921391Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

45b8ad8283cdd8b51f4e8382d85d27fa9362b8d0894d0b29184d98806d50645a

Aliases

arxiv: 1908.02765 · arxiv_version: 1908.02765v2 · doi: 10.48550/arxiv.1908.02765 · pith_short_12: IW4K3AUDZXML · pith_short_16: IW4K3AUDZXMLKH2O · pith_short_8: IW4K3AUD

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/IW4K3AUDZXMLKH2OQOBNQXJH7K \
  | 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: 45b8ad8283cdd8b51f4e8382d85d27fa9362b8d0894d0b29184d98806d50645a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "76313aeee49824dd6295b02c10f735c4fe1d22182f956e61fa5513f227882b9f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2019-08-07T18:00:02Z",
    "title_canon_sha256": "ca87b55974ccca909ca760f03ac7dbaca3f4535ad5946cd30b4b893e4ddad7c5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.02765",
    "kind": "arxiv",
    "version": 2
  }
}