Pith Number

pith:XBFHB3LI

pith:2019:XBFHB3LI4B66VGIWE2IIS7HNPO

not attested not anchored not stored refs pending

From 'bathtub' galaxy evolution models to metallicity gradients

F. Belfiore, F. Matteucci, F. Vincenzo, R. Maiolino

arxiv:1903.05105 v2 · 2019-03-12 · 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{XBFHB3LI4B66VGIWE2IIS7HNPO}

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	2026-05-17T23:46:18.240029Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b84a70ed68e07dea99162690897ced7baf184cf5caf11e5d65f43beb0268d49c

Aliases

arxiv: 1903.05105 · arxiv_version: 1903.05105v2 · doi: 10.48550/arxiv.1903.05105 · pith_short_12: XBFHB3LI4B66 · pith_short_16: XBFHB3LI4B66VGIW · pith_short_8: XBFHB3LI

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/XBFHB3LI4B66VGIWE2IIS7HNPO \
  | 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: b84a70ed68e07dea99162690897ced7baf184cf5caf11e5d65f43beb0268d49c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e63cb116cc6bdef71fbb7fe39868b315cef4a0b999f56a826c4335ba616bc8b4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2019-03-12T18:00:08Z",
    "title_canon_sha256": "d850b3d2cbc0429fce89fd0e0b93d632935182ecb8550d9f3b4634c0e9798544"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1903.05105",
    "kind": "arxiv",
    "version": 2
  }
}