Pith Number

pith:PQQV64G4

pith:2019:PQQV64G4GAOJBSFDZA7SAL6XAT

not attested not anchored not stored refs pending

The complex phenomena of YSOs revealed by their X-ray variability

Ettore Flaccomio, Fabio Reale, Ignazio Pillitteri, Salvatore Sciortino

arxiv:1903.05404 v1 · 2019-03-13 · astro-ph.SR · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PQQV64G4GAOJBSFDZA7SAL6XAT}

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	2026-05-17T23:51:24.379611Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7c215f70dc301c90c8a3c83f202fd704d51f4ef74629c13b863539cf677ffd3b

Aliases

arxiv: 1903.05404 · arxiv_version: 1903.05404v1 · doi: 10.48550/arxiv.1903.05404 · pith_short_12: PQQV64G4GAOJ · pith_short_16: PQQV64G4GAOJBSFD · pith_short_8: PQQV64G4

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/PQQV64G4GAOJBSFDZA7SAL6XAT \
  | 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: 7c215f70dc301c90c8a3c83f202fd704d51f4ef74629c13b863539cf677ffd3b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1a833907aa9021c6f070fd630a3da75f9cb09df0ef1ba1acb323d15b03a573ba",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2019-03-13T10:33:50Z",
    "title_canon_sha256": "689f3fa9cc2cd4eb7dc997b2033ef933e8d8ce728fe4a79a53e79d9ec58a0844"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1903.05404",
    "kind": "arxiv",
    "version": 1
  }
}