Pith Number

pith:STFEPFA4

pith:2019:STFEPFA4KQTMLTS2QNZICIW3YM

not attested not anchored not stored refs pending

Two merging galaxy clusters with very hot shock fronts observed shortly before pericentric passage

G. S. Souza, P. A. A. Lopes, R. C. Volert, R. E. G. Machado, T. F. Lagan\'a

arxiv:1906.01708 v1 · 2019-06-04 · 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{STFEPFA4KQTMLTS2QNZICIW3YM}

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	2026-05-17T23:42:59.956744Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

94ca47941c5426c5ce5a83728122dbc301e32a26270b0f0dfde60ece4e11f108

Aliases

arxiv: 1906.01708 · arxiv_version: 1906.01708v1 · doi: 10.48550/arxiv.1906.01708 · pith_short_12: STFEPFA4KQTM · pith_short_16: STFEPFA4KQTMLTS2 · pith_short_8: STFEPFA4

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/STFEPFA4KQTMLTS2QNZICIW3YM \
  | 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: 94ca47941c5426c5ce5a83728122dbc301e32a26270b0f0dfde60ece4e11f108

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "00edb18411e5be2e587d5ef2d20adf77a35e381d587c369023930303b827ab97",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2019-06-04T20:05:22Z",
    "title_canon_sha256": "aed89cd691439c8fa4332be177b2966aa7899eef341b184397eb5fe9c07d51aa"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1906.01708",
    "kind": "arxiv",
    "version": 1
  }
}