Pith Number

pith:T7OWHIIF

pith:2019:T7OWHIIFMDWVV7P2VXGWUSRUNE

not attested not anchored not stored refs pending

The lowest detected stellar Fe abundance: The halo star SMSS J160540.18-144323.1

A. Chiti, A.D. Mackey, A.F. Marino, A. Frebel, A.R. Casey, B.P. Schmidt, D. Yong, G.S. Da Costa, J.E. Norris, K. Lind, M. Asplund, M.S. Bessell, R. Ezzeddine, S.J. Murphy, T. Nordlander

arxiv:1904.07471 v1 · 2019-04-16 · astro-ph.SR · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{T7OWHIIFMDWVV7P2VXGWUSRUNE}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-17T23:39:44.143554Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9fdd63a10560ed5afdfaadcd6a4a34692b3185beec2baae75fd5b4e47c359ea2

Aliases

arxiv: 1904.07471 · arxiv_version: 1904.07471v1 · doi: 10.48550/arxiv.1904.07471 · pith_short_12: T7OWHIIFMDWV · pith_short_16: T7OWHIIFMDWVV7P2 · pith_short_8: T7OWHIIF

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/T7OWHIIFMDWVV7P2VXGWUSRUNE \
  | 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: 9fdd63a10560ed5afdfaadcd6a4a34692b3185beec2baae75fd5b4e47c359ea2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6f38256165f0e40ccb563535a4dbc08ffb5f8c5f34d0c162596f732279157552",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2019-04-16T05:27:51Z",
    "title_canon_sha256": "21dae06b6a56e7999a25df8e676b85e433d982a6004200d5798fb58242625708"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.07471",
    "kind": "arxiv",
    "version": 1
  }
}