Pith Number

pith:MRIG6BG2

pith:2011:MRIG6BG2OUTHCM7HMSEDNDNZTG

not attested not anchored not stored refs pending

The Milky Way and other spiral galaxies

CNRS, F. Hammer (1), France), H. Flores (1), J. L. Wang (1), Meudon, M. Puech (1), Observatoire de Paris, S. Fouquet (1) ((1) GEPI, Y. B. Yang (1)

arxiv:1111.2044 v1 · 2011-11-08 · 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{MRIG6BG2OUTHCM7HMSEDNDNZTG}

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	2026-05-18T01:59:43.522035Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

64506f04da75267133e76488368db999bb15bb2b92cabc6c58a9d47cdf4c7d17

Aliases

arxiv: 1111.2044 · arxiv_version: 1111.2044v1 · doi: 10.48550/arxiv.1111.2044 · pith_short_12: MRIG6BG2OUTH · pith_short_16: MRIG6BG2OUTHCM7H · pith_short_8: MRIG6BG2

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/MRIG6BG2OUTHCM7HMSEDNDNZTG \
  | 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: 64506f04da75267133e76488368db999bb15bb2b92cabc6c58a9d47cdf4c7d17

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5fd8c181f2c8193d48be9dc3802b73815a4473b35a1a0c4479e816d5c7ed1acd",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-11-08T21:00:00Z",
    "title_canon_sha256": "985dc5335c3d81c974e83738d0d358f44ab6e611ca10dcfb13afd6be8ec2f671"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1111.2044",
    "kind": "arxiv",
    "version": 1
  }
}