Pith Number

pith:HCPQO6SR

pith:2015:HCPQO6SRHSXYK2666BYJSLFVQT

not attested not anchored not stored refs pending

A survey of stellar X-ray flares from the XMM-Newton serendipitous source catalogue: Hipparcos-Tycho cool stars

2) ((1) University of Leicester, (2) South African Astronomical Observatory), A. C. Schroeder (1, D. Fyfe (1), J. P. Pye (1), S. Rosen (1)

arxiv:1506.05289 v1 · 2015-06-17 · 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{HCPQO6SRHSXYK2666BYJSLFVQT}

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	2026-05-18T01:34:16.067167Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

389f077a513caf856bdef070992cb584c6bcae6292cf4fcc5cef567b92586c30

Aliases

arxiv: 1506.05289 · arxiv_version: 1506.05289v1 · doi: 10.48550/arxiv.1506.05289 · pith_short_12: HCPQO6SRHSXY · pith_short_16: HCPQO6SRHSXYK266 · pith_short_8: HCPQO6SR

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/HCPQO6SRHSXYK2666BYJSLFVQT \
  | 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: 389f077a513caf856bdef070992cb584c6bcae6292cf4fcc5cef567b92586c30

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b5182a759e215723408f632144a4005f98f1c5dfd0c88f5beb1d94ad96070c92",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2015-06-17T11:41:40Z",
    "title_canon_sha256": "ca874779e219fc3bde4fbe32afa37622eea99815782afed095885ce0c0e1587b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1506.05289",
    "kind": "arxiv",
    "version": 1
  }
}