Pith Number

pith:H5EIHRGH

pith:2018:H5EIHRGHBHYXR6CPKPZX5GMYBN

not attested not anchored not stored refs pending

Photometry and spectroscopy of faint candidate spectrophotometric standard DA white dwarfs

A. Calamida (NOAO, A. Rest (STScI, A. Saha (NOAO), C. Shanahan (STScI), C. W. Stubbs (Harvard University), E. Olszewski (University of Arizona), E. Sabbi (STScI), G. Narayan (NOAO, I. Hubeny (University of Arizona), J. Claver (NOAO), J. Holberg (University of Arizona), JHU), J. Mackenty (STScI), R. Bohlin (STScI), S. Deustua (STScI), S. Points (CTIO), STScI), T. Axelrod (University of Arizona), T. Matheson (NOAO)

arxiv:1812.00034 v3 · 2018-11-30 · astro-ph.SR · astro-ph.GA · astro-ph.IM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{H5EIHRGHBHYXR6CPKPZX5GMYBN}

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	2026-05-17T23:52:03.879197Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3f4883c4c709f178f84f53f37e99980b67d59ba8e8ef4376807ed4b051fa7c92

Aliases

arxiv: 1812.00034 · arxiv_version: 1812.00034v3 · doi: 10.48550/arxiv.1812.00034 · pith_short_12: H5EIHRGHBHYX · pith_short_16: H5EIHRGHBHYXR6CP · pith_short_8: H5EIHRGH

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/H5EIHRGHBHYXR6CPKPZX5GMYBN \
  | 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: 3f4883c4c709f178f84f53f37e99980b67d59ba8e8ef4376807ed4b051fa7c92

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1e6b0658ecbdca9d07175a0fcd42d4505004ace40cf8d13b38c411dba6781054",
    "cross_cats_sorted": [
      "astro-ph.GA",
      "astro-ph.IM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2018-11-30T19:53:16Z",
    "title_canon_sha256": "a3961d8822e69dab28b62da91d53f665308b6a7fc6b3cda5495f0d99fb8e3e82"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1812.00034",
    "kind": "arxiv",
    "version": 3
  }
}