Pith Number

pith:B6Y54TZQ

pith:2013:B6Y54TZQTO3AMIIQ7DMNACHXEY

not attested not anchored not stored refs pending

A Semi-Analytical Description for the Formation and Gravitational Evolution of Protoplanetary Disks

Masahiro N. Machida, Sanemichi Z. Takahashi, Shu-ichiro Inutsuka

arxiv:1305.3413 v1 · 2013-05-15 · astro-ph.SR · 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{B6Y54TZQTO3AMIIQ7DMNACHXEY}

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	2026-05-18T01:49:56.999454Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0fb1de4f309bb6062110f8d8d008f72606d13518326563e80e09095385c065c0

Aliases

arxiv: 1305.3413 · arxiv_version: 1305.3413v1 · doi: 10.48550/arxiv.1305.3413 · pith_short_12: B6Y54TZQTO3A · pith_short_16: B6Y54TZQTO3AMIIQ · pith_short_8: B6Y54TZQ

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/B6Y54TZQTO3AMIIQ7DMNACHXEY \
  | 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: 0fb1de4f309bb6062110f8d8d008f72606d13518326563e80e09095385c065c0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1ad95ca21fe33182b54b58dd97dff18ebc1651af0c83a825d4deb80a1d5a26bf",
    "cross_cats_sorted": [
      "astro-ph.EP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2013-05-15T10:10:02Z",
    "title_canon_sha256": "37a5667be23516fa16f50373c2ff2065eccbfa0c10a7adc88e38c8f3fe7a8fdb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1305.3413",
    "kind": "arxiv",
    "version": 1
  }
}