Pith Number

pith:CH2VPKPL

pith:2016:CH2VPKPLJ6EZIBPPZSYFIVJLZA

not attested not anchored not stored refs pending

The Local Group: The Ultimate Deep Field

Daniel R. Weisz, James S. Bullock, Michael Boylan-Kolchin, Michael C. Cooper

arxiv:1603.02679 v2 · 2016-03-08 · 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{CH2VPKPLJ6EZIBPPZSYFIVJLZA}

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	2026-05-18T01:10:59.286788Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

11f557a9eb4f899405efccb054552bc8004bf688ae722fed86f618a068452052

Aliases

arxiv: 1603.02679 · arxiv_version: 1603.02679v2 · doi: 10.48550/arxiv.1603.02679 · pith_short_12: CH2VPKPLJ6EZ · pith_short_16: CH2VPKPLJ6EZIBPP · pith_short_8: CH2VPKPL

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/CH2VPKPLJ6EZIBPPZSYFIVJLZA \
  | 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: 11f557a9eb4f899405efccb054552bc8004bf688ae722fed86f618a068452052

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f43a05a4879bda5ea3d975cff53b27c75cdbeb557729d271d2a5f8a65f0582cd",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2016-03-08T21:00:00Z",
    "title_canon_sha256": "e60dd407e479ed971809b9db22aff2b4729ff4aab93cedc15062759982a68bb5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1603.02679",
    "kind": "arxiv",
    "version": 2
  }
}