Pith Number

pith:ACG4PBNW

pith:2019:ACG4PBNWFQHOBHT7V2H6YK76T3

not attested not anchored not stored refs pending

The accelerating rotation of the magnetic He-weak star HD 142990

B. Das, G. A. Wade, M. Shultz, P. Chandra, Th. Rivinius

arxiv:1904.08887 v2 · 2019-04-18 · astro-ph.SR

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

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	2026-05-17T23:45:26.761237Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

008dc785b62c0ee09e7fae8fec2bfe9ed33c37604aa70bf37e07fe0a38fe3bde

Aliases

arxiv: 1904.08887 · arxiv_version: 1904.08887v2 · doi: 10.48550/arxiv.1904.08887 · pith_short_12: ACG4PBNWFQHO · pith_short_16: ACG4PBNWFQHOBHT7 · pith_short_8: ACG4PBNW

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/ACG4PBNWFQHOBHT7V2H6YK76T3 \
  | 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: 008dc785b62c0ee09e7fae8fec2bfe9ed33c37604aa70bf37e07fe0a38fe3bde

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "796c2cec3024d87e132e4b958182125479c010efdda35df84c4a52ed6e4d58da",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2019-04-18T16:53:22Z",
    "title_canon_sha256": "04e22b7a34d4c6c3cc893f7fc1fa0063424a6fe0d05fa141c38b063dd29b5f70"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.08887",
    "kind": "arxiv",
    "version": 2
  }
}