Pith Number

pith:7YBNFQHO

pith:2009:7YBNFQHOBYFK3B56D5Y32JERG5

not attested not anchored not stored refs pending

A dark matter disc in the Milky Way

A. M. Brooks, F. Governato, G. Lake, J. I. Read, L. Mayer, O. Agertz, V. Debattista

arxiv:0901.2938 v1 · 2009-01-19 · 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{7YBNFQHOBYFK3B56D5Y32JERG5}

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	2026-05-18T02:14:56.750543Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fe02d2c0ee0e0aad87be1f71bd2491375e38d5becc76ec8c2a5be943c75bffdd

Aliases

arxiv: 0901.2938 · arxiv_version: 0901.2938v1 · doi: 10.48550/arxiv.0901.2938 · pith_short_12: 7YBNFQHOBYFK · pith_short_16: 7YBNFQHOBYFK3B56 · pith_short_8: 7YBNFQHO

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/7YBNFQHOBYFK3B56D5Y32JERG5 \
  | 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: fe02d2c0ee0e0aad87be1f71bd2491375e38d5becc76ec8c2a5be943c75bffdd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a6e1bb21f3c9f4c7cfbf9015de1d5781fc1519369fd5c61f54fc4e371c5ed44f",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2009-01-19T21:12:40Z",
    "title_canon_sha256": "8bb7bc5dbc5142347b6e9ce427199c5ca3edb062f8a03e8b6653dbe22e5b7274"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0901.2938",
    "kind": "arxiv",
    "version": 1
  }
}