Pith Number

pith:AZY7ADNZ

pith:2011:AZY7ADNZ3ZORIDXJ3ICTHP2KBE

not attested not anchored not stored refs pending

The dark matter halo density profile, spiral arm morphology and black hole mass of M33

Marc S. Seigar

arxiv:1103.3200 v1 · 2011-03-16 · 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{AZY7ADNZ3ZORIDXJ3ICTHP2KBE}

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	2026-05-18T04:22:41.082747Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0671f00db9de5d140ee9da0533bf4a092a11600158575bcb5598667f741cc27b

Aliases

arxiv: 1103.3200 · arxiv_version: 1103.3200v1 · doi: 10.48550/arxiv.1103.3200 · pith_short_12: AZY7ADNZ3ZOR · pith_short_16: AZY7ADNZ3ZORIDXJ · pith_short_8: AZY7ADNZ

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/AZY7ADNZ3ZORIDXJ3ICTHP2KBE \
  | 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: 0671f00db9de5d140ee9da0533bf4a092a11600158575bcb5598667f741cc27b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2a5d6c95045661b35f12a8f6d4839fdae111091bce8f1ef89fd29afa0d30da68",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-03-16T15:32:10Z",
    "title_canon_sha256": "8dafb9753beb8cf4279565560404cfa845385e465498887c5377ddc3579345e8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1103.3200",
    "kind": "arxiv",
    "version": 1
  }
}