Pith Number

pith:Y2BCVWEK

pith:2020:Y2BCVWEK2WAF4YZII7OOOCPNUN

not attested not anchored not stored refs pending

Protoplanetary disk masses in NGC 2024: Evidence for two populations

Carlo F. Manara, Ewine F. van Dishoeck, James Di Francesco, John Carpenter, Jonathan P. Williams, Josh A. Eisner, Michael Meyer, Nienke van der Marel, Rita K. Mann, Sean M. Andrews, Sierk E. van Terwisga

arxiv:2004.13551 v1 · 2020-04-28 · astro-ph.SR · astro-ph.EP · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{Y2BCVWEK2WAF4YZII7OOOCPNUN}

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	2026-07-05T01:26:13.951309Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c6822ad88ad5805e632847dce709eda34edc245ff5573fa517e9a95eb798fc42

Aliases

arxiv: 2004.13551 · arxiv_version: 2004.13551v1 · doi: 10.48550/arxiv.2004.13551 · pith_short_12: Y2BCVWEK2WAF · pith_short_16: Y2BCVWEK2WAF4YZI · pith_short_8: Y2BCVWEK

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/Y2BCVWEK2WAF4YZII7OOOCPNUN \
  | 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: c6822ad88ad5805e632847dce709eda34edc245ff5573fa517e9a95eb798fc42

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "66a6900cc17c8d8698d310f769b21a408d850807e60d6814cb1cfc07e38f6bdf",
    "cross_cats_sorted": [
      "astro-ph.EP",
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2020-04-28T14:22:36Z",
    "title_canon_sha256": "2d5413120c742c3ce60d8df1f21ba6d2df0552246a9323f826821deb54f18e85"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2004.13551",
    "kind": "arxiv",
    "version": 1
  }
}