Pith Number

pith:DCPY3DYZ

pith:2018:DCPY3DYZIY6BNZQBY5DM3QB4SD

not attested not anchored not stored refs pending

Circumgalactic gas at its extreme: tidal gas streams around the Whale galaxy NGC 4631 explored with HST/COS

A.J. Fox, B.P. Wakker, B. Winkel, C. Fechner, G. Gentile, G. Heald, L. Zschaechner, N. Ben Bekhti, N.M. Pingel, P. Richter, R.A.M. Walterbos

arxiv:1810.07700 v1 · 2018-10-17 · 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{DCPY3DYZIY6BNZQBY5DM3QB4SD}

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	2026-05-17T23:59:04.560631Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

189f8d8f19463c16e601c746cdc03c90fdbf18e4c85e291fe29af7b1e6f946f0

Aliases

arxiv: 1810.07700 · arxiv_version: 1810.07700v1 · doi: 10.48550/arxiv.1810.07700 · pith_short_12: DCPY3DYZIY6B · pith_short_16: DCPY3DYZIY6BNZQB · pith_short_8: DCPY3DYZ

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/DCPY3DYZIY6BNZQBY5DM3QB4SD \
  | 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: 189f8d8f19463c16e601c746cdc03c90fdbf18e4c85e291fe29af7b1e6f946f0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cd49bb83f823b77f3bbeb477d5db65e93934588e4937cafe07c52383ae7d2ffd",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-10-17T18:00:02Z",
    "title_canon_sha256": "94dc909e75ea9cd989b446204179e3752c472df42596e0de892d35b58d0d93c2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1810.07700",
    "kind": "arxiv",
    "version": 1
  }
}