Pith Number

pith:N7ZY2GBE

pith:2019:N7ZY2GBEOSVLWZJ6TVBTJWL2QS

not attested not anchored not stored refs pending

Constraining the Thermal Properties of Planetary Surfaces using Machine Learning: Application to Airless Bodies

Andrew J. Ryan, Erik Asphaug, Marco Delbo, Roberto Furfaro, Saverio Cambioni

arxiv:1902.08631 v1 · 2019-02-22 · astro-ph.EP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{N7ZY2GBEOSVLWZJ6TVBTJWL2QS}

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	2026-05-17T23:52:50.588099Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6ff38d182474aabb653e9d4334d97a848f35c5dcc91b9ebe697f2c05c87fe80a

Aliases

arxiv: 1902.08631 · arxiv_version: 1902.08631v1 · doi: 10.48550/arxiv.1902.08631 · pith_short_12: N7ZY2GBEOSVL · pith_short_16: N7ZY2GBEOSVLWZJ6 · pith_short_8: N7ZY2GBE

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/N7ZY2GBEOSVLWZJ6TVBTJWL2QS \
  | 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: 6ff38d182474aabb653e9d4334d97a848f35c5dcc91b9ebe697f2c05c87fe80a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "419e59414ddf49a1208ad41dee79d74ed91dbce73cf558666e91cf311f99aba4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2019-02-22T19:00:16Z",
    "title_canon_sha256": "8bca8f48bb068fe31e54476b6fa17af8100609050c033f71ad56e8894c1a6bb8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.08631",
    "kind": "arxiv",
    "version": 1
  }
}