Pith Number

pith:NNZPZW6E

pith:2005:NNZPZW6EPLZB2EDAWL3RVEPI7R

not attested not anchored not stored refs pending

The stellar population and interstellar medium in NGC 6822

F. Walter (MPIA, Heidelberg), Mt Stromlo), W.J.G. de Blok (RSAA

arxiv:astro-ph/0508018 v1 · 2005-08-01 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NNZPZW6EPLZB2EDAWL3RVEPI7R}

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	2026-07-04T15:25:36.304738Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6b72fcdbc47af21d1060b2f71a91e8fc69c0186126362dfdcd15ee01e5ca8236

Aliases

arxiv: astro-ph/0508018 · arxiv_version: astro-ph/0508018v1 · doi: 10.48550/arxiv.astro-ph/0508018 · pith_short_12: NNZPZW6EPLZB · pith_short_16: NNZPZW6EPLZB2EDA · pith_short_8: NNZPZW6E

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/NNZPZW6EPLZB2EDAWL3RVEPI7R \
  | 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: 6b72fcdbc47af21d1060b2f71a91e8fc69c0186126362dfdcd15ee01e5ca8236

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fe28a3798d8903b276b3a5482875633ab97c11dfc361cbd7cbde2f3398331cdc",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2005-08-01T02:09:32Z",
    "title_canon_sha256": "94b40ceb582847ddb74294e30eefa61ff8aaf8a42f777be1b9086b0d91f10bd2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0508018",
    "kind": "arxiv",
    "version": 1
  }
}