Pith Number

pith:W4GIGZ3T

pith:2015:W4GIGZ3TR4ELKPE3R5D53RGEWW

not attested not anchored not stored refs pending

Beyond S\'ersic + exponential disc morphologies in the Coma Cluster

Jacob T.C.G. Head (Durham), John R. Lucey (Durham), Michael J. Hudson (Waterloo)

arxiv:1507.07930 v1 · 2015-07-28 · 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{W4GIGZ3TR4ELKPE3R5D53RGEWW}

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	2026-05-18T01:32:28.549989Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b70c8367738f08b53c9b8f47ddc4c4b5b722dcbc4db6dbe0dd6c730b1533a5fd

Aliases

arxiv: 1507.07930 · arxiv_version: 1507.07930v1 · doi: 10.48550/arxiv.1507.07930 · pith_short_12: W4GIGZ3TR4EL · pith_short_16: W4GIGZ3TR4ELKPE3 · pith_short_8: W4GIGZ3T

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/W4GIGZ3TR4ELKPE3R5D53RGEWW \
  | 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: b70c8367738f08b53c9b8f47ddc4c4b5b722dcbc4db6dbe0dd6c730b1533a5fd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "77defe1ab5f1cf6829dac6abdfc32808d39fa941a2cf769cbbe0ccbe6791b4b3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2015-07-28T20:00:36Z",
    "title_canon_sha256": "c835bbba65aa65f32a87977c7a72e601788d0db4971d51ede76d23cb6ef35c08"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1507.07930",
    "kind": "arxiv",
    "version": 1
  }
}