Pith Number

pith:PE7YGZSC

pith:2015:PE7YGZSCTDWJVPFPQRRC7CRYIX

not attested not anchored not stored refs pending

Planetary Nebulae and their parent stellar populations. Tracing the mass assembly of M87 and Intracluster light in the Virgo cluster core

Alessia Longobardi, Magda Arnaboldi, Ortwin Gerhard

arxiv:1511.02002 v1 · 2015-11-06 · 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{PE7YGZSCTDWJVPFPQRRC7CRYIX}

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	2026-05-18T01:05:45.775431Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

793f83664298ec9abcaf84622f8a3845ff9f8be505d9d879bce129b48f4260fd

Aliases

arxiv: 1511.02002 · arxiv_version: 1511.02002v1 · doi: 10.48550/arxiv.1511.02002 · pith_short_12: PE7YGZSCTDWJ · pith_short_16: PE7YGZSCTDWJVPFP · pith_short_8: PE7YGZSC

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/PE7YGZSCTDWJVPFPQRRC7CRYIX \
  | 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: 793f83664298ec9abcaf84622f8a3845ff9f8be505d9d879bce129b48f4260fd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2500416ce35900c1a39a5c3ccbf00da2a10ca8b135dc160313493c30de4c5ecb",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2015-11-06T08:13:31Z",
    "title_canon_sha256": "91cd8c9f8d346b7195eb20dde39b5c67a49accbd46d647d89075063dc5f4b3af"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1511.02002",
    "kind": "arxiv",
    "version": 1
  }
}