Pith Number

pith:FZVQMRFB

pith:2015:FZVQMRFBLOCOXIE6IYDVUFTZ5I

not attested not anchored not stored refs pending

Probing the Final Stages of Protoplanetary Disk Evolution with ALMA

A. Hardy, C. Caceres, H. Canovas, J. P. Williams, L. Cieza, M. R. Schreiber, R. D. Alexander, Z. Wahhaj

arxiv:1504.05562 v2 · 2015-04-21 · 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{FZVQMRFBLOCOXIE6IYDVUFTZ5I}

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	2026-05-18T01:28:56.627720Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2e6b0644a15b84eba09e46075a1679ea39a965717580aabd573beac2bb394a77

Aliases

arxiv: 1504.05562 · arxiv_version: 1504.05562v2 · doi: 10.48550/arxiv.1504.05562 · pith_short_12: FZVQMRFBLOCO · pith_short_16: FZVQMRFBLOCOXIE6 · pith_short_8: FZVQMRFB

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/FZVQMRFBLOCOXIE6IYDVUFTZ5I \
  | 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: 2e6b0644a15b84eba09e46075a1679ea39a965717580aabd573beac2bb394a77

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "413d40d5c51f4eb673a4f91880d1650e40c14320f2b8a5a16b2443e558e8df5b",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2015-04-21T19:45:28Z",
    "title_canon_sha256": "8fbcabb90e27260e33dc8ebe45baf468e82889a509b3d35891df5001ffe6d8f9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.05562",
    "kind": "arxiv",
    "version": 2
  }
}