Pith Number

pith:BC4YV3C6

pith:2012:BC4YV3C67O5GE2GKBKFPVTUOXJ

not attested not anchored not stored refs pending

The polar ring galaxy AM 2040-620 and its possible companion

Irapuan Rodrigues, Maximiliano Fa\'undez-Abans, Priscila Freitas-Lemes

arxiv:1208.4063 v1 · 2012-08-20 · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{BC4YV3C67O5GE2GKBKFPVTUOXJ}

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	2026-05-18T03:48:25.339758Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

08b98aec5efbba6268ca0a8aface8eba71158d5dba04fdece2771c2563adf5a2

Aliases

arxiv: 1208.4063 · arxiv_version: 1208.4063v1 · doi: 10.48550/arxiv.1208.4063 · pith_short_12: BC4YV3C67O5G · pith_short_16: BC4YV3C67O5GE2GK · pith_short_8: BC4YV3C6

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/BC4YV3C67O5GE2GKBKFPVTUOXJ \
  | 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: 08b98aec5efbba6268ca0a8aface8eba71158d5dba04fdece2771c2563adf5a2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "963c2db76858d3702c23bc7018d765db4d2125f04083461b9f0c77dc0ace8e9a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2012-08-20T17:33:39Z",
    "title_canon_sha256": "99f619adf509d0f977b9a6cb9c7e393aaf031be80c0f2388eaba91b44292d2a7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1208.4063",
    "kind": "arxiv",
    "version": 1
  }
}