Pith Number

pith:W32NK2FT

pith:2019:W32NK2FTX3YWUEPXKJOBLCJPN4

not attested not anchored not stored refs pending

No evidence of a sudden change of spectral appearance or magnetic field strength of the O9.7V star HD 54879

A. David-Uraz, C.P. Folsom, E. Alecian, G.A. Wade, J. Sikora, L. Fossati, M.E. Shultz, N. Castro, S. Bagnulo, V. Petit, Z. Keszthelyi

arxiv:1910.14495 v2 · 2019-10-31 · 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{W32NK2FTX3YWUEPXKJOBLCJPN4}

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	2026-07-05T00:30:33.115116Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b6f4d568b3bef16a11f7525c15892f6f02e6ce69eaf38ed724c654f1a05b97bd

Aliases

arxiv: 1910.14495 · arxiv_version: 1910.14495v2 · doi: 10.48550/arxiv.1910.14495 · pith_short_12: W32NK2FTX3YW · pith_short_16: W32NK2FTX3YWUEPX · pith_short_8: W32NK2FT

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/W32NK2FTX3YWUEPXKJOBLCJPN4 \
  | 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: b6f4d568b3bef16a11f7525c15892f6f02e6ce69eaf38ed724c654f1a05b97bd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cbdb75c8d1ac633c3e98238ac0c0570851a6b854937086f16d2a72be53ebf7df",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2019-10-31T14:32:08Z",
    "title_canon_sha256": "05cd8e5b6970a5bd30e256980e78c7a3cf85baf7aae917aa90edeec062838f77"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1910.14495",
    "kind": "arxiv",
    "version": 2
  }
}