Pith Number

pith:WWECNNUC

pith:2019:WWECNNUCLWQSHZG4LNGM2XN4LP

not attested not anchored not stored refs pending

On the formation of our solar system and many other protoplanetary systems observed by ALMA and SPHERE

Demosthenes Kazanas, Dimitris M. Christodoulou

arxiv:1901.02593 v2 · 2019-01-09 · astro-ph.EP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WWECNNUCLWQSHZG4LNGM2XN4LP}

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	2026-05-17T23:52:14.946965Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b58826b6825da123e4dc5b4ccd5dbc5bc1f27b7d95f22907f2c44cf4cfd134ee

Aliases

arxiv: 1901.02593 · arxiv_version: 1901.02593v2 · doi: 10.48550/arxiv.1901.02593 · pith_short_12: WWECNNUCLWQS · pith_short_16: WWECNNUCLWQSHZG4 · pith_short_8: WWECNNUC

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/WWECNNUCLWQSHZG4LNGM2XN4LP \
  | 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: b58826b6825da123e4dc5b4ccd5dbc5bc1f27b7d95f22907f2c44cf4cfd134ee

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8bf30a5b55c8e4c1bc6ae5fd6c9895cd908dadcc4e690f762cff48ad8eea92c1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2019-01-09T03:35:24Z",
    "title_canon_sha256": "72a4316aa9833cfe0ff5a215165bcb6bd7fbd109290ab2bcbb0c11efe710405a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1901.02593",
    "kind": "arxiv",
    "version": 2
  }
}