Pith Number

pith:QU5NKC45

pith:2011:QU5NKC457VIZKGUOLQAI4EY2DL

not attested not anchored not stored refs pending

Pitch angles of distant spiral galaxies

S.S. Savchenko, V.P. Reshetnikov

arxiv:1110.6111 v1 · 2011-10-27 · astro-ph.CO · 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{QU5NKC457VIZKGUOLQAI4EY2DL}

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	2026-05-18T02:00:03.081831Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

853ad50b9dfd51951a8e5c008e131a1ac281e939acdf50e0107640754f945f32

Aliases

arxiv: 1110.6111 · arxiv_version: 1110.6111v1 · doi: 10.48550/arxiv.1110.6111 · pith_short_12: QU5NKC457VIZ · pith_short_16: QU5NKC457VIZKGUO · pith_short_8: QU5NKC45

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/QU5NKC457VIZKGUOLQAI4EY2DL \
  | 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: 853ad50b9dfd51951a8e5c008e131a1ac281e939acdf50e0107640754f945f32

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "54b7880704b7aeae03e18d02265b9b995aea8d1aa1ebf64c697595467135ba8a",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-10-27T15:21:55Z",
    "title_canon_sha256": "6867ac7c5bd0b338e5a52d75e53bc63f7dd40f95a0b7720fe30c7acfec91777e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1110.6111",
    "kind": "arxiv",
    "version": 1
  }
}