Pith Number

pith:PPK7J5EZ

pith:2012:PPK7J5EZVXJMHBVXQDDLON5WNN

not attested not anchored not stored refs pending

Plunging fireworks: Why do infalling galaxies light up on the outskirts of clusters?

Kevin A. Pimbblet, Smriti Mahajan, Somak Raychaudhury

arxiv:1209.0972 v1 · 2012-09-05 · 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{PPK7J5EZVXJMHBVXQDDLON5WNN}

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	2026-05-18T01:54:40.176725Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7bd5f4f499add2c386b780c6b737b66b579c821b510c11b671c3720d2ec72088

Aliases

arxiv: 1209.0972 · arxiv_version: 1209.0972v1 · doi: 10.48550/arxiv.1209.0972 · pith_short_12: PPK7J5EZVXJM · pith_short_16: PPK7J5EZVXJMHBVX · pith_short_8: PPK7J5EZ

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/PPK7J5EZVXJMHBVXQDDLON5WNN \
  | 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: 7bd5f4f499add2c386b780c6b737b66b579c821b510c11b671c3720d2ec72088

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1582975970451ea591b8cd446ea874e8500a692fe8a6b8b99ea03890db03cd26",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2012-09-05T13:36:28Z",
    "title_canon_sha256": "b8a4bf4ec925af7ffad11904c93631803811413b5b4bb1baf759fabe037518e2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1209.0972",
    "kind": "arxiv",
    "version": 1
  }
}