Pith Number

pith:7M4BJGWS

pith:2015:7M4BJGWSPY7YCBTDMOC73PDYON

not attested not anchored not stored refs pending

Extremely metal-poor stars from the cosmic dawn in the bulge of the Milky Way

A. R. Casey, A. Udalski, B. P. Schmidt, C. I. Owen, C. Kobayashi, D. M. Nataf, D. Yong, G. Pietrzy\'nski, G. S. Da Costa, I. Soszy\'nski, J. Skowron, K. Lind, K. Ulaczyk, L. M. Howes, \L. Wyrzykowski, M. Asplund, M. K. Szyma\'nski, M. Ness, M. S. Bessell, P. Mr\'oz, P. Pietrukowicz, P. Tisserand, R. Poleski, S. C. Keller, S. Koz{\l}owski

arxiv:1511.03930 v1 · 2015-11-12 · astro-ph.GA · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7M4BJGWSPY7YCBTDMOC73PDYON}

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	2026-05-18T01:27:06.444610Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fb38149ad27e3f8106636385fdbc78737dc202734cec61a146a6f2de78b69cab

Aliases

arxiv: 1511.03930 · arxiv_version: 1511.03930v1 · doi: 10.48550/arxiv.1511.03930 · pith_short_12: 7M4BJGWSPY7Y · pith_short_16: 7M4BJGWSPY7YCBTD · pith_short_8: 7M4BJGWS

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/7M4BJGWSPY7YCBTDMOC73PDYON \
  | 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: fb38149ad27e3f8106636385fdbc78737dc202734cec61a146a6f2de78b69cab

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f52a79d94a99e38e94b8ec9b065e80d3e50cd1005490d4f39166415c8ba0f984",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2015-11-12T15:34:05Z",
    "title_canon_sha256": "48e312b3c3aea8979b32d6e9a64e4e33bf58b030de55948ce8bb668de7e8e451"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1511.03930",
    "kind": "arxiv",
    "version": 1
  }
}