Pith Number

pith:2SK62ZG5

pith:2005:2SK62ZG5BO3T4BBCNYAI2HYZ6T

not attested not anchored not stored refs pending

The Dwarf Spheroidal Companions to M31: Variable Stars in Andromeda I and Andromeda III

Barton J. Pritzl, George H. Jacoby, G. S. Da Costa, Taft E. Armandroff

arxiv:astro-ph/0501083 v1 · 2005-01-05 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2SK62ZG5BO3T4BBCNYAI2HYZ6T}

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	2026-07-04T16:50:33.872522Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d495ed64dd0bb73e04226e008d1f19f4d77edd2abbaa3950321d36b5c7dfb2c6

Aliases

arxiv: astro-ph/0501083 · arxiv_version: astro-ph/0501083v1 · doi: 10.48550/arxiv.astro-ph/0501083 · pith_short_12: 2SK62ZG5BO3T · pith_short_16: 2SK62ZG5BO3T4BBC · pith_short_8: 2SK62ZG5

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/2SK62ZG5BO3T4BBCNYAI2HYZ6T \
  | 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: d495ed64dd0bb73e04226e008d1f19f4d77edd2abbaa3950321d36b5c7dfb2c6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0ae8ecf11f701e0d729541b847a56cbf675e9ddf60c5fa96934d0913a0e6ffd1",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2005-01-05T23:30:30Z",
    "title_canon_sha256": "d76c14c13f5289cfbe4756835299c33f2428e21a8945f3e321ff554593f091ae"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0501083",
    "kind": "arxiv",
    "version": 1
  }
}