Pith Number

pith:Y4CKMLE6

pith:2015:Y4CKMLE6CHFF5NBDR7BTPY3UDH

not attested not anchored not stored refs pending

Gas density drops inside dust cavities of transitional disks around young stars observed with ALMA

2), (2) MPE Garching, (3) NRAO Socorro, (4) Rice University), Andrea Isella (4) ((1) Leiden Observatory, Ewine van Dishoeck (1, Laura M. Perez (3), Nienke van der Marel (1), Simon Bruderer (2)

arxiv:1504.03927 v1 · 2015-04-15 · 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{Y4CKMLE6CHFF5NBDR7BTPY3UDH}

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	2026-05-18T01:37:13.343663Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c704a62c9e11ca5eb4238fc337e37419f42072711e3a865af7ff690694707d1f

Aliases

arxiv: 1504.03927 · arxiv_version: 1504.03927v1 · doi: 10.48550/arxiv.1504.03927 · pith_short_12: Y4CKMLE6CHFF · pith_short_16: Y4CKMLE6CHFF5NBD · pith_short_8: Y4CKMLE6

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/Y4CKMLE6CHFF5NBDR7BTPY3UDH \
  | 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: c704a62c9e11ca5eb4238fc337e37419f42072711e3a865af7ff690694707d1f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e6f099b15a129046f8624a2a4ba7d3b9d668d5f8af61f39e16f672dda014d804",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2015-04-15T14:33:45Z",
    "title_canon_sha256": "f1f11f7e4d37521c9cdd905d6c043e4c011943cf1c3503b3866d66a57c3fa1c5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.03927",
    "kind": "arxiv",
    "version": 1
  }
}