Pith Number

pith:5KVL5E6N

pith:2012:5KVL5E6NL5RDRFOXKG5UZZWAQM

not attested not anchored not stored refs pending

Shadows, gaps, and ring-like structures in protoplanetary disks

Frank Heymann, Ralf Siebenmorgen

arxiv:1201.3577 v1 · 2012-01-17 · 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{5KVL5E6NL5RDRFOXKG5UZZWAQM}

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	2026-05-18T01:58:48.010987Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

eaaabe93cd5f623895d751bb4ce6c083189a68a68f5fad4ee1cb939f08c5cfb9

Aliases

arxiv: 1201.3577 · arxiv_version: 1201.3577v1 · doi: 10.48550/arxiv.1201.3577 · pith_short_12: 5KVL5E6NL5RD · pith_short_16: 5KVL5E6NL5RDRFOX · pith_short_8: 5KVL5E6N

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/5KVL5E6NL5RDRFOXKG5UZZWAQM \
  | 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: eaaabe93cd5f623895d751bb4ce6c083189a68a68f5fad4ee1cb939f08c5cfb9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6fdb5f2794ab510dedd1c8ffdebd0d90c0bbaf7df4aa52f8a68703cb7fbdb615",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2012-01-17T18:00:35Z",
    "title_canon_sha256": "a0bc4034051a16d0be07bb24185a263684414b83f107f4d3388e9f4a07a70347"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1201.3577",
    "kind": "arxiv",
    "version": 1
  }
}