Pith Number

pith:PKNPRY34

pith:2022:PKNPRY34O2GSYGOTYOC4JJZQBC

not attested not anchored not stored refs pending

Extremely massive disc galaxies in the nearby Universe form through gas-rich minor mergers

E. A. Noakes-Kettel, G. Martin, J. E. G. Devriendt, J. Silk, P. Ogle, R. A. Jackson, S. Kaviraj, Y. Dubois

arxiv:2201.08855 v1 · 2022-01-21 · 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{PKNPRY34O2GSYGOTYOC4JJZQBC}

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	2026-07-05T03:50:37.633854Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7a9af8e37c768d2c19d3c385c4a73008b3e8d7391f7b4bcc0bfed535fb96fc7f

Aliases

arxiv: 2201.08855 · arxiv_version: 2201.08855v1 · doi: 10.48550/arxiv.2201.08855 · pith_short_12: PKNPRY34O2GS · pith_short_16: PKNPRY34O2GSYGOT · pith_short_8: PKNPRY34

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/PKNPRY34O2GSYGOTYOC4JJZQBC \
  | 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: 7a9af8e37c768d2c19d3c385c4a73008b3e8d7391f7b4bcc0bfed535fb96fc7f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f1d4a89b6227c6f68d978477eafc06cc267616ae2ee3bcf3ba2bdc12b838ded2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2022-01-21T19:00:01Z",
    "title_canon_sha256": "9d8d534c2095de25fe8530a18125caeb0cb8feef0a8be460ad097cbbbf7cfdb9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2201.08855",
    "kind": "arxiv",
    "version": 1
  }
}