Pith Number

pith:J7HUM367

pith:2018:J7HUM367MXIWAH7QRIQZTJM3DA

not attested not anchored not stored refs pending

ACTIN: A tool to calculate stellar activity indices

J. Gomes da Silva, J. P. Faria, N. C. Santos, P. Figueira

arxiv:1811.11172 v1 · 2018-11-22 · astro-ph.IM · 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{J7HUM367MXIWAH7QRIQZTJM3DA}

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	2026-05-17T23:59:44.527344Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4fcf466fdf65d1601ff08a2199a59b1833698bea32c2b7539221fc601955da75

Aliases

arxiv: 1811.11172 · arxiv_version: 1811.11172v1 · doi: 10.48550/arxiv.1811.11172 · pith_short_12: J7HUM367MXIW · pith_short_16: J7HUM367MXIWAH7Q · pith_short_8: J7HUM367

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/J7HUM367MXIWAH7QRIQZTJM3DA \
  | 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: 4fcf466fdf65d1601ff08a2199a59b1833698bea32c2b7539221fc601955da75

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fb3aa71b1b25916d0c9ae59f5a77f662188be0aea4b24076ba9d5695c4e9c2e6",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2018-11-22T13:27:59Z",
    "title_canon_sha256": "ecf141f3e86ff091fe156232e5ae8ab61d5fa4e41701a22a0f5c26598ecb44e1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1811.11172",
    "kind": "arxiv",
    "version": 1
  }
}