Pith Number

pith:T55CMKHY

pith:2009:T55CMKHYGQP4HH2RAIA55E4LUY

not attested not anchored not stored refs pending

Automatic morphological classification of galaxy images

Lior Shamir

arxiv:0908.3904 v1 · 2009-08-26 · astro-ph.IM · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{T55CMKHYGQP4HH2RAIA55E4LUY}

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	2026-05-18T02:12:22.475196Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9f7a2628f8341fc39f510201de938ba62ffaff4cd1cd9bc9cab757be1bb411dc

Aliases

arxiv: 0908.3904 · arxiv_version: 0908.3904v1 · doi: 10.48550/arxiv.0908.3904 · pith_short_12: T55CMKHYGQP4 · pith_short_16: T55CMKHYGQP4HH2R · pith_short_8: T55CMKHY

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/T55CMKHYGQP4HH2RAIA55E4LUY \
  | 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: 9f7a2628f8341fc39f510201de938ba62ffaff4cd1cd9bc9cab757be1bb411dc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0743468f527438dcee428fc9992ebb83a319ba7d7aba25cd70d0cfad13a281c8",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2009-08-26T20:56:23Z",
    "title_canon_sha256": "f08a104878c812e1d44bce429000317f028fc488e5b8b35d31b9becf3cfd54d8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0908.3904",
    "kind": "arxiv",
    "version": 1
  }
}