Pith Number

pith:MZFAWQVB

pith:2018:MZFAWQVBAGPLU3MVZWS5IO23V2

not attested not anchored not stored refs pending

Physical Properties of II Zw 40's Super Star Cluster and Nebula: New Insights and Puzzles from UV Spectroscopy

(2) Mt. Stromlo Obs., (3) Caltech, (4) Univ. of Washington), Claus Leitherer (1), Emily M. Levesque (4) ((1) STScI, Janice C. Lee (3), Nell Byler (2)

arxiv:1808.04332 v1 · 2018-08-13 · 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{MZFAWQVBAGPLU3MVZWS5IO23V2}

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	2026-05-18T00:03:45.614933Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

664a0b42a1019eba6d95cda5d43b5bae81f41e0ee6bc82b2a593d75c91fbe740

Aliases

arxiv: 1808.04332 · arxiv_version: 1808.04332v1 · doi: 10.48550/arxiv.1808.04332 · pith_short_12: MZFAWQVBAGPL · pith_short_16: MZFAWQVBAGPLU3MV · pith_short_8: MZFAWQVB

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/MZFAWQVBAGPLU3MVZWS5IO23V2 \
  | 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: 664a0b42a1019eba6d95cda5d43b5bae81f41e0ee6bc82b2a593d75c91fbe740

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "aa39879c83b0fefece10a497c7ff0c44b9bf49a61820d676556d62d5a27d774c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-08-13T17:04:37Z",
    "title_canon_sha256": "895b7904b65cbc56c7345eb7f25b67cd27c1596b7e77e1217608e2adeac9ca58"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.04332",
    "kind": "arxiv",
    "version": 1
  }
}