Pith Number

pith:FRH3YCEB

pith:2018:FRH3YCEB3ZPT7JNYSEONAHQJZW

not attested not anchored not stored refs pending

Limits on Ionized Gas in M81's Globular Clusters

J. M. Wrobel, K. E. Johnson

arxiv:1801.01936 v1 · 2018-01-05 · 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{FRH3YCEB3ZPT7JNYSEONAHQJZW}

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	2026-05-18T00:26:35.452585Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2c4fbc0881de5f3fa5b8911cd01e09cda42c58c71b15e813b7a92390838b201c

Aliases

arxiv: 1801.01936 · arxiv_version: 1801.01936v1 · doi: 10.48550/arxiv.1801.01936 · pith_short_12: FRH3YCEB3ZPT · pith_short_16: FRH3YCEB3ZPT7JNY · pith_short_8: FRH3YCEB

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/FRH3YCEB3ZPT7JNYSEONAHQJZW \
  | 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: 2c4fbc0881de5f3fa5b8911cd01e09cda42c58c71b15e813b7a92390838b201c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2483fd59a5543cab4e5465349a79802465813bb1665fb7fb7e5b93132bdd0126",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-01-05T22:44:13Z",
    "title_canon_sha256": "1747d83a0d0c56562fd552a0f222f32ee27eebd209b6750333f4a7605b039332"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1801.01936",
    "kind": "arxiv",
    "version": 1
  }
}