Pith Number

pith:W4CMXBIP

pith:2018:W4CMXBIPZZZTKSXPZMT2XTSSJR

not attested not anchored not stored refs pending

The curious case of II Lup: a complex morphology revealed with SAM/NACO and ALMA

Adam Avison, Albert A. Zijlstra, Barnaby R.M. Norris, Eric Lagadec, Foteini Lykou, Jacques Kluska, Peter G. Tuthill, Quentin A. Parker

arxiv:1808.00279 v1 · 2018-08-01 · 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{W4CMXBIPZZZTKSXPZMT2XTSSJR}

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	2026-05-18T00:09:06.623537Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b704cb850fce73354aefcb27abce524c766e39ed6d8d3c979d2416471d6b028f

Aliases

arxiv: 1808.00279 · arxiv_version: 1808.00279v1 · doi: 10.48550/arxiv.1808.00279 · pith_short_12: W4CMXBIPZZZT · pith_short_16: W4CMXBIPZZZTKSXP · pith_short_8: W4CMXBIP

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/W4CMXBIPZZZTKSXPZMT2XTSSJR \
  | 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: b704cb850fce73354aefcb27abce524c766e39ed6d8d3c979d2416471d6b028f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1d79a8bb43a7b15a3fe705e47e0d13bcd7dcbb9f9bba404416f04bd7d11685a6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2018-08-01T11:44:15Z",
    "title_canon_sha256": "ce9e8ae832417f5c1a4f9b6073657a59d0787aa84d0d400f21367b00116224e2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.00279",
    "kind": "arxiv",
    "version": 1
  }
}