Pith Number

pith:QMEHJG7J

pith:2012:QMEHJG7JBQDSRAXTS7VZZ73YFN

not attested not anchored not stored refs pending

A small slice of the Milky Way disk in SDSS

Martin C. Smith

arxiv:1201.3665 v1 · 2012-01-17 · 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{QMEHJG7JBQDSRAXTS7VZZ73YFN}

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	2026-05-18T04:04:18.359229Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8308749be90c072882f397eb9cff782b675705807e6b211de7829dbecd11a570

Aliases

arxiv: 1201.3665 · arxiv_version: 1201.3665v1 · doi: 10.48550/arxiv.1201.3665 · pith_short_12: QMEHJG7JBQDS · pith_short_16: QMEHJG7JBQDSRAXT · pith_short_8: QMEHJG7J

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/QMEHJG7JBQDSRAXTS7VZZ73YFN \
  | 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: 8308749be90c072882f397eb9cff782b675705807e6b211de7829dbecd11a570

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e4e61748d54695f418d4de0196f100c78ff69dc5c07d02068c0cf5b764d75f43",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2012-01-17T23:21:50Z",
    "title_canon_sha256": "36a0678ee2c19f9c25ab7122741192fb2c58e9f3dd6dfefe23a7d58004dc099e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1201.3665",
    "kind": "arxiv",
    "version": 1
  }
}