Pith Number

pith:NN66CB4Z

pith:2015:NN66CB4ZUXJ4SQM3HVWKWIZSFN

not attested not anchored not stored refs pending

Temperature-based metallicity measurements at z=0.8: direct calibration of strong-line diagnostics at intermediate redshift

Crystal Martin, Michael C. Cooper, Tucker Jones

arxiv:1504.02417 v2 · 2015-04-09 · 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{NN66CB4ZUXJ4SQM3HVWKWIZSFN}

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	2026-05-18T01:27:23.968673Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6b7de10799a5d3c9419b3d6cab23322b72e48446b71a817a4e10322684d5f13b

Aliases

arxiv: 1504.02417 · arxiv_version: 1504.02417v2 · doi: 10.48550/arxiv.1504.02417 · pith_short_12: NN66CB4ZUXJ4 · pith_short_16: NN66CB4ZUXJ4SQM3 · pith_short_8: NN66CB4Z

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/NN66CB4ZUXJ4SQM3HVWKWIZSFN \
  | 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: 6b7de10799a5d3c9419b3d6cab23322b72e48446b71a817a4e10322684d5f13b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9ef048bdc772efdbde45325986de20bcb45311a618f15cf4559132e03116d3e4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2015-04-09T18:39:29Z",
    "title_canon_sha256": "3a9b9997a4d7ac723cd55ebaaa631c1b713ec0757e71e58adf33fc3de2dcd0d5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.02417",
    "kind": "arxiv",
    "version": 2
  }
}