Pith Number

pith:QROL5EUG

pith:2011:QROL5EUGZMBIBSL2ABCU2X2DHT

not attested not anchored not stored refs pending

Warp or lag? The ionized and neutral hydrogen gas in the edge-on dwarf galaxy UGC 1281

G.H. Heald, P.C. van der Kruit, P. Kamphuis, R.F. Peletier

arxiv:1103.0699 v1 · 2011-03-03 · 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{QROL5EUGZMBIBSL2ABCU2X2DHT}

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	2026-05-18T02:03:00.419377Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

845cbe9286cb0280c97a00454d5f433cd66a125901c4ea4dad30ed863e6aca87

Aliases

arxiv: 1103.0699 · arxiv_version: 1103.0699v1 · doi: 10.48550/arxiv.1103.0699 · pith_short_12: QROL5EUGZMBI · pith_short_16: QROL5EUGZMBIBSL2 · pith_short_8: QROL5EUG

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/QROL5EUGZMBIBSL2ABCU2X2DHT \
  | 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: 845cbe9286cb0280c97a00454d5f433cd66a125901c4ea4dad30ed863e6aca87

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d8d9adf268cfba2993f2d50252b9a41061a8a09e10edf85724d0761699e758a3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-03-03T14:34:13Z",
    "title_canon_sha256": "973b0287adbdddebe81d0f4a291258b5ec39771331f543d80c2969ea2fc1296e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1103.0699",
    "kind": "arxiv",
    "version": 1
  }
}