Pith Number

pith:LD4RDTC6

pith:2019:LD4RDTC6BJKEOGH2YIXAGGV4AJ

not attested not anchored not stored refs pending

Rapid destruction of protoplanetary discs due to externalphotoevaporation in star-forming regions

Melvyn B. Davies, Niamh M. Fearon, Rhana B. Nicholson, Richard J. Parker, Ross P. Church, Sam R. J. Walton

arxiv:1902.11094 v1 · 2019-02-28 · astro-ph.GA · astro-ph.EP · 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{LD4RDTC6BJKEOGH2YIXAGGV4AJ}

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	2026-05-17T23:49:01.755763Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

58f911cc5e0a544718fac22e031abc0249e6382817606c869df96deecc730351

Aliases

arxiv: 1902.11094 · arxiv_version: 1902.11094v1 · doi: 10.48550/arxiv.1902.11094 · pith_short_12: LD4RDTC6BJKE · pith_short_16: LD4RDTC6BJKEOGH2 · pith_short_8: LD4RDTC6

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/LD4RDTC6BJKEOGH2YIXAGGV4AJ \
  | 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: 58f911cc5e0a544718fac22e031abc0249e6382817606c869df96deecc730351

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a389e7eddfe57254a95122209b7e90b10d5711ee44032dffd64163e357a623f0",
    "cross_cats_sorted": [
      "astro-ph.EP",
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2019-02-28T14:26:39Z",
    "title_canon_sha256": "fe5b9f7f577e4beae57f37bd661b96a6f79e3acc4af4b400cb75b917f044de04"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.11094",
    "kind": "arxiv",
    "version": 1
  }
}