Pith Number

pith:4N7JWXEC

pith:2019:4N7JWXECLC7TAR22DE7N6O6W75

not attested not anchored not stored refs pending

Revealing dust segregation in protoplanetary discs with the help of multi-frequency spectral index maps

Dmitri Wiebe, Eduard Vorobyov, Vitaly Akimkin, Yaroslav Pavlyuchenkov

arxiv:1904.05251 v1 · 2019-04-10 · astro-ph.IM · 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{4N7JWXECLC7TAR22DE7N6O6W75}

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	2026-05-17T23:48:29.325494Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e37e9b5c8258bf30475a193edf3bd6ff6f12036821cea9308aaba5c326de9558

Aliases

arxiv: 1904.05251 · arxiv_version: 1904.05251v1 · doi: 10.48550/arxiv.1904.05251 · pith_short_12: 4N7JWXECLC7T · pith_short_16: 4N7JWXECLC7TAR22 · pith_short_8: 4N7JWXEC

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/4N7JWXECLC7TAR22DE7N6O6W75 \
  | 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: e37e9b5c8258bf30475a193edf3bd6ff6f12036821cea9308aaba5c326de9558

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "816baa1e2c8bbf3146c48c93961df75fa358bc3f6cbee08aa0afd4e9e89e251d",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2019-04-10T15:41:48Z",
    "title_canon_sha256": "7780f62afdac39f33e93bcebb65e21ad194e391d182fdb4b7d6808470257226e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.05251",
    "kind": "arxiv",
    "version": 1
  }
}