Pith Number

pith:FXO64MYD

pith:2018:FXO64MYDTM5VZU5XOMFLOFUKTI

not attested not anchored not stored refs pending

A New Algorithm to Quantify Maximum Discs in Galaxies

Federico Lelli, James Schombert, Nathaniel Starkman, Stacy McGaugh

arxiv:1802.09967 v3 · 2018-02-27 · 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{FXO64MYDTM5VZU5XOMFLOFUKTI}

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	2026-05-18T00:09:35.939597Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2dddee33039b3b5cd3b7730ab7168a9a386c3eeeb5a35b0f2ee62d03c5c70457

Aliases

arxiv: 1802.09967 · arxiv_version: 1802.09967v3 · doi: 10.48550/arxiv.1802.09967 · pith_short_12: FXO64MYDTM5V · pith_short_16: FXO64MYDTM5VZU5X · pith_short_8: FXO64MYD

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/FXO64MYDTM5VZU5XOMFLOFUKTI \
  | 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: 2dddee33039b3b5cd3b7730ab7168a9a386c3eeeb5a35b0f2ee62d03c5c70457

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d6fff0cddb04870816c0422ee22d0d5ba69a168f931e284da8d8be5591b8d598",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-02-27T15:30:03Z",
    "title_canon_sha256": "12e7aa4eb0ad72b2316bf0008be9e88276a13357f59080fd321184612529d814"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.09967",
    "kind": "arxiv",
    "version": 3
  }
}