Pith Number

pith:G2VSFQKJ

pith:2012:G2VSFQKJBQPS7T7RNGBZBVOBDI

not attested not anchored not stored refs pending

Constraining the distribution of dark matter at the Galactic centre using the high-resolution Event Horizon Telescope

Joseph Silk, Thomas Lacroix

arxiv:1211.4861 v2 · 2012-11-20 · astro-ph.GA · astro-ph.CO

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{G2VSFQKJBQPS7T7RNGBZBVOBDI}

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	2026-05-18T03:15:57.658449Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

36ab22c1490c1f2fcff1698390d5c11a0b51e4f85823691bc51f15dc189ab6c0

Aliases

arxiv: 1211.4861 · arxiv_version: 1211.4861v2 · doi: 10.48550/arxiv.1211.4861 · pith_short_12: G2VSFQKJBQPS · pith_short_16: G2VSFQKJBQPS7T7R · pith_short_8: G2VSFQKJ

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/G2VSFQKJBQPS7T7RNGBZBVOBDI \
  | 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: 36ab22c1490c1f2fcff1698390d5c11a0b51e4f85823691bc51f15dc189ab6c0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6992ad06b868df583540647a8e9cd4e6b59d6a7456e3f572944af90fedbd686a",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2012-11-20T20:57:02Z",
    "title_canon_sha256": "c773be6a207d6859fea208d1086aa7678dab6b03e9714d6bb387ff4916700b10"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1211.4861",
    "kind": "arxiv",
    "version": 2
  }
}