Pith Number

pith:XR27GANA

pith:2019:XR27GANA2NFH4YTTLLG6FLTTIC

not attested not anchored not stored refs pending

A mass threshold for galactic gas discs by spin flips

Avishai Dekel, Daniel Ceverino, Fangzhou Jiang, Joel Primack, Jonathan Freundlich, Omri Ginzburg, Sharon Lapiner

arxiv:1912.08213 v2 · 2019-12-17 · astro-ph.GA · 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{XR27GANA2NFH4YTTLLG6FLTTIC}

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	2026-07-05T00:47:39.994999Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bc75f301a0d34a7e62735acde2ae734082af3e38ce623cb33e0cc13a971df16f

Aliases

arxiv: 1912.08213 · arxiv_version: 1912.08213v2 · doi: 10.48550/arxiv.1912.08213 · pith_short_12: XR27GANA2NFH · pith_short_16: XR27GANA2NFH4YTT · pith_short_8: XR27GANA

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/XR27GANA2NFH4YTTLLG6FLTTIC \
  | 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: bc75f301a0d34a7e62735acde2ae734082af3e38ce623cb33e0cc13a971df16f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "31e06d50aed51d1179706fb5e6fe3849219ec37ce1ff0807e0258edb6971686b",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2019-12-17T19:00:03Z",
    "title_canon_sha256": "779ece045643e6279a255348ad4ec9ac9db3ae957864ec12268fa2cd1e20e09c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1912.08213",
    "kind": "arxiv",
    "version": 2
  }
}