Pith Number

pith:EC2JTKFY

pith:2015:EC2JTKFYNBBS76BC45KRAWM4YU

not attested not anchored not stored refs pending

Molecular and Ionized Hydrogen in 30 Doradus. I. Imaging Observations

2), (2) University of Toronto, (3) University of Toledo), Christopher D. Matzner (2), Eric W. Pellegrini (3) ((1) Subaru Telescope, Ernest R. Seaquist (2), NAOJ, Sherry C. C. Yeh (1

arxiv:1504.04951 v1 · 2015-04-20 · 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{EC2JTKFYNBBS76BC45KRAWM4YU}

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	2026-05-18T01:36:53.843799Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

20b499a8b868432ff822e75510599cc53b94764f1a6e61de5a8b1f6ab7be7774

Aliases

arxiv: 1504.04951 · arxiv_version: 1504.04951v1 · doi: 10.48550/arxiv.1504.04951 · pith_short_12: EC2JTKFYNBBS · pith_short_16: EC2JTKFYNBBS76BC · pith_short_8: EC2JTKFY

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/EC2JTKFYNBBS76BC45KRAWM4YU \
  | 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: 20b499a8b868432ff822e75510599cc53b94764f1a6e61de5a8b1f6ab7be7774

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "363d393ed11a2251ad145c23ba5546ace93b5dbce47c0ab92a7383f23ffd19de",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2015-04-20T07:01:33Z",
    "title_canon_sha256": "9eba171ddfed39970b056be41226a4851471d0115b2ba61d0217045bf9a042c7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.04951",
    "kind": "arxiv",
    "version": 1
  }
}