Pith Number

pith:NTPJGVVF

pith:2015:NTPJGVVF6XEF42YM7NEDRHBY2M

not attested not anchored not stored refs pending

Radial alignment of elliptical galaxies by the tidal force of a cluster of galaxies

Hong Tu, Shuang-Nan Zhang, Shu-Xu Yi, Yu Rong

arxiv:1506.01800 v1 · 2015-06-05 · 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{NTPJGVVF6XEF42YM7NEDRHBY2M}

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	2026-05-18T01:29:31.565632Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6cde9356a5f5c85e6b0cfb48389c38d31a55efd5722882d3363dc9cdbe423a54

Aliases

arxiv: 1506.01800 · arxiv_version: 1506.01800v1 · doi: 10.48550/arxiv.1506.01800 · pith_short_12: NTPJGVVF6XEF · pith_short_16: NTPJGVVF6XEF42YM · pith_short_8: NTPJGVVF

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/NTPJGVVF6XEF42YM7NEDRHBY2M \
  | 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: 6cde9356a5f5c85e6b0cfb48389c38d31a55efd5722882d3363dc9cdbe423a54

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e8744deb80b7624f6f4d0f2b860b5465c224902f863390d92e4196554699a08c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2015-06-05T07:35:08Z",
    "title_canon_sha256": "40b21dc9f83a6504f6fff48aca14dce47ecb544ae6c30927e638288424e0173f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1506.01800",
    "kind": "arxiv",
    "version": 1
  }
}