Pith Number

pith:W5SKX4LU

pith:2015:W5SKX4LUUUUEOIHL4HXGHD4CJK

not attested not anchored not stored refs pending

Observational Accuracy of Variable Stars, Novae and Supernovae from Naked Eye to General Relativistic Standard: a Balance over Thousand SGQ Observations Sent to AAVSO

Costantino Sigismondi

arxiv:1506.03770 v1 · 2015-06-11 · astro-ph.SR · astro-ph.IM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{W5SKX4LUUUUEOIHL4HXGHD4CJK}

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	2026-05-18T01:53:03.332914Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b764abf174a5284720ebe1ee638f824aaf8db0b1c2af24b1dbbda579f4a97e09

Aliases

arxiv: 1506.03770 · arxiv_version: 1506.03770v1 · doi: 10.48550/arxiv.1506.03770 · pith_short_12: W5SKX4LUUUUE · pith_short_16: W5SKX4LUUUUEOIHL · pith_short_8: W5SKX4LU

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/W5SKX4LUUUUEOIHL4HXGHD4CJK \
  | 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: b764abf174a5284720ebe1ee638f824aaf8db0b1c2af24b1dbbda579f4a97e09

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0d15f29f0eacdb1cb1178d7db0550fc89db0ecb82ef8406506d13bd2eb3ae4b4",
    "cross_cats_sorted": [
      "astro-ph.IM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2015-06-11T18:46:42Z",
    "title_canon_sha256": "429428261496c22f74668e7487a296315106f0ec60579bfffc8a6eefd5803e4e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1506.03770",
    "kind": "arxiv",
    "version": 1
  }
}