Pith Number

pith:4WPYGVVQ

pith:2018:4WPYGVVQGWHTHH3IUK5226R7OI

not attested not anchored not stored refs pending

The Surface Magnetic Activity of the Weak-Line T Tauri Stars TWA 9A and V1095 Sco

B. A. Nicholson, B. D. Carter, C. P. Folsom, D. Wright, G. A. J. Hussain, J.-F. Donati, M. Mengel, the MaTYSSE collaboration

arxiv:1807.07684 v1 · 2018-07-20 · 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{4WPYGVVQGWHTHH3IUK5226R7OI}

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	2026-05-18T00:08:38.022185Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e59f8356b0358f339f68a2bbad7a3f72099cd7bdf249275745842b542ee50cfb

Aliases

arxiv: 1807.07684 · arxiv_version: 1807.07684v1 · doi: 10.48550/arxiv.1807.07684 · pith_short_12: 4WPYGVVQGWHT · pith_short_16: 4WPYGVVQGWHTHH3I · pith_short_8: 4WPYGVVQ

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/4WPYGVVQGWHTHH3IUK5226R7OI \
  | 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: e59f8356b0358f339f68a2bbad7a3f72099cd7bdf249275745842b542ee50cfb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "88273fff5c9044a03d5ad3334937c8434b46eb273985d84e578b59995ac9e189",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2018-07-20T01:26:54Z",
    "title_canon_sha256": "2499de8280c6824118e5dcbde43df04c3c2b1ba42504cd3ab256116c53a8251c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.07684",
    "kind": "arxiv",
    "version": 1
  }
}