Pith Number

pith:7Q3H2YWD

pith:2023:7Q3H2YWDUDCF75ZFDZPY2WQ457

not attested not anchored not stored refs pending

Reflection, emission, and polarization properties of surfaces made of hyperfine grains, and implications for the nature of primitive small bodies

Alessandro Maturilli, Antoine Pommerol, Bernard Schmitt, Eric Quirico, Giulia Alemanno, J\"orn Helbert, Lucas Patty, Olivier Poch, Pierre Beck, Robin Sultana, Stefano Spadaccia

arxiv:2302.10111 v1 · 2023-02-20 · astro-ph.EP · astro-ph.IM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7Q3H2YWDUDCF75ZFDZPY2WQ457}

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	2026-07-05T05:43:33.378073Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fc367d62c3a0c45ff7251e5f8d5a1cefd1c7882c7ef32c9281588807f5b700e0

Aliases

arxiv: 2302.10111 · arxiv_version: 2302.10111v1 · doi: 10.48550/arxiv.2302.10111 · pith_short_12: 7Q3H2YWDUDCF · pith_short_16: 7Q3H2YWDUDCF75ZF · pith_short_8: 7Q3H2YWD

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/7Q3H2YWDUDCF75ZFDZPY2WQ457 \
  | 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: fc367d62c3a0c45ff7251e5f8d5a1cefd1c7882c7ef32c9281588807f5b700e0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "33228b7a2539c0218fa69e657205b2696f0630ecdbdc3c4e982f222a19cedb41",
    "cross_cats_sorted": [
      "astro-ph.IM"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2023-02-20T17:15:17Z",
    "title_canon_sha256": "e0a777b50f01b585da0f22f25f2b7e2777107b64c700fbafb1b0fac544e60a72"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2302.10111",
    "kind": "arxiv",
    "version": 1
  }
}