Pith Number

pith:ROKQ5Z7X

pith:2019:ROKQ5Z7XPXENGC4V7P72LESLGM

not attested not anchored not stored refs pending

Keck HIRES Spectroscopy of SkyMapper Commissioning Survey Candidate Extremely Metal-Poor Stars

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, S. C. Keller, S. J. Murphy, T. Nordlander

arxiv:1902.10611 v1 · 2019-02-27 · astro-ph.SR · 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{ROKQ5Z7XPXENGC4V7P72LESLGM}

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	2026-05-17T23:51:29.832928Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8b950ee7f77dc8d30b95fbffa5924b330edc549ffebff4bc540b12d410ee2165

Aliases

arxiv: 1902.10611 · arxiv_version: 1902.10611v1 · doi: 10.48550/arxiv.1902.10611 · pith_short_12: ROKQ5Z7XPXEN · pith_short_16: ROKQ5Z7XPXENGC4V · pith_short_8: ROKQ5Z7X

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/ROKQ5Z7XPXENGC4V7P72LESLGM \
  | 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: 8b950ee7f77dc8d30b95fbffa5924b330edc549ffebff4bc540b12d410ee2165

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "580b931911efcbf0d2ac711da13a1ab46308d57b1f44c2d7f8b744f73924e451",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2019-02-27T16:03:55Z",
    "title_canon_sha256": "a7e1d5d19e0b90317927e435a0429adb456378bb253aa8942029fa0b44bfe545"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.10611",
    "kind": "arxiv",
    "version": 1
  }
}