Pith Number

pith:77ZJ6TGC

pith:2017:77ZJ6TGC3ZUWRPXXBCGA4X6QXS

not attested not anchored not stored refs pending

A photometric analysis of Abell 1689: two-dimensional multi-structure decomposition, morphological classification, and the Fundamental Plane

Elena Dalla Bont\`a, F. D'Eugenio, J. M\'endez-Abreu, R. C. W. Houghton, R. L. Davies

arxiv:1709.08642 v1 · 2017-09-25 · 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{77ZJ6TGC3ZUWRPXXBCGA4X6QXS}

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	2026-05-18T00:28:13.896363Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fff29f4cc2de6968bef7088c0e5fd0bc816c871b9c6e008fb27b34d96ef878c6

Aliases

arxiv: 1709.08642 · arxiv_version: 1709.08642v1 · doi: 10.48550/arxiv.1709.08642 · pith_short_12: 77ZJ6TGC3ZUW · pith_short_16: 77ZJ6TGC3ZUWRPXX · pith_short_8: 77ZJ6TGC

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/77ZJ6TGC3ZUWRPXXBCGA4X6QXS \
  | 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: fff29f4cc2de6968bef7088c0e5fd0bc816c871b9c6e008fb27b34d96ef878c6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "da73b03c61c458a3cc306f494cee7d75b39f38113631c8d1ce88cf082017b71e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2017-09-25T18:00:08Z",
    "title_canon_sha256": "b94150a21f4cbceae366152dbbc354b69d8736573f380d4b482c289d7c67f7ec"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1709.08642",
    "kind": "arxiv",
    "version": 1
  }
}