Pith Number

pith:NNQXN4GR

pith:2017:NNQXN4GRJLMMPGFTDJCXQCXOCZ

not attested not anchored not stored refs pending

The fate of the gaseous disks of galaxies that fall into clusters

Gast\~ao B. Lima Neto, Rafael Ruggiero

arxiv:1703.08550 v1 · 2017-03-24 · 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{NNQXN4GRJLMMPGFTDJCXQCXOCZ}

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	2026-05-18T00:47:56.151947Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6b6176f0d14ad8c798b31a45780aee1646a50db01f3ed75838849e85dc2c991d

Aliases

arxiv: 1703.08550 · arxiv_version: 1703.08550v1 · doi: 10.48550/arxiv.1703.08550 · pith_short_12: NNQXN4GRJLMM · pith_short_16: NNQXN4GRJLMMPGFT · pith_short_8: NNQXN4GR

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/NNQXN4GRJLMMPGFTDJCXQCXOCZ \
  | 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: 6b6176f0d14ad8c798b31a45780aee1646a50db01f3ed75838849e85dc2c991d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9728fc2ea2af6272f0d52fa98a9707cd32bd055218119c309f6da6f124217938",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2017-03-24T18:00:07Z",
    "title_canon_sha256": "178bcefe1754d042b281e6db7ac88ac1b624c0c655745f7b84cd286176924dfe"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1703.08550",
    "kind": "arxiv",
    "version": 1
  }
}