Pith Number

pith:ZI4J3FGV

pith:2019:ZI4J3FGV76DIHOVNSD6XB7IXTQ

not attested not anchored not stored refs pending

A Machine Learning Artificial Neural Network Calibration of the Strong-Line Oxygen Abundance

I-Ting Ho

arxiv:1903.01506 v1 · 2019-03-04 · 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{ZI4J3FGV76DIHOVNSD6XB7IXTQ}

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	2026-05-17T23:51:29.670886Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ca389d94d5ff8683baad90fd70fd179c1c4b391523c6a92b60ad0f8b56e32c88

Aliases

arxiv: 1903.01506 · arxiv_version: 1903.01506v1 · doi: 10.48550/arxiv.1903.01506 · pith_short_12: ZI4J3FGV76DI · pith_short_16: ZI4J3FGV76DIHOVN · pith_short_8: ZI4J3FGV

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/ZI4J3FGV76DIHOVNSD6XB7IXTQ \
  | 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: ca389d94d5ff8683baad90fd70fd179c1c4b391523c6a92b60ad0f8b56e32c88

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "60c053654c806854f1fb63118acfd4107a667bad18925d691a786166821781f6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2019-03-04T19:43:39Z",
    "title_canon_sha256": "9163f8d1c4a4d4a62039d3f8225e215412ec6150cef68af9d649eeb14a2b6d53"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1903.01506",
    "kind": "arxiv",
    "version": 1
  }
}