Pith Number

pith:X7GRDJRZ

pith:2023:X7GRDJRZSKMZI4EQKFJBOY7W2W

not attested not anchored not stored refs pending

Ultra-deep Keck/MOSFIRE spectroscopic observations of $z\sim 2$ galaxies: direct oxygen abundances and nebular excitation properties

Alice Shapley, Daniel P. Stark, Leonardo Clarke, Mariska Kriek, Mengtao Tang, Michael W. Topping, Naveen A. Reddy, Ryan L. Sanders, Tucker Jones

arxiv:2305.07781 v2 · 2023-05-12 · 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{X7GRDJRZSKMZI4EQKFJBOY7W2W}

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	2026-07-05T06:48:07.465022Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bfcd11a639929994709051521763f6d5835698aa17e5435c47c2cfd6e54cc6dc

Aliases

arxiv: 2305.07781 · arxiv_version: 2305.07781v2 · doi: 10.48550/arxiv.2305.07781 · pith_short_12: X7GRDJRZSKMZ · pith_short_16: X7GRDJRZSKMZI4EQ · pith_short_8: X7GRDJRZ

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/X7GRDJRZSKMZI4EQKFJBOY7W2W \
  | 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: bfcd11a639929994709051521763f6d5835698aa17e5435c47c2cfd6e54cc6dc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f3a3e686da83f801ff8ced31c9c184394bdb38533b3db482374dd2853e75e99a",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2023-05-12T22:01:14Z",
    "title_canon_sha256": "d89f2c783420c3c36c51e4fb419d2ac17d08ac3020ca5adf2144a702b790b268"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2305.07781",
    "kind": "arxiv",
    "version": 2
  }
}