Pith Number

pith:VMHHUUG5

pith:2019:VMHHUUG5KRX3AXBVQSXFQJEBP4

not attested not anchored not stored refs pending

3-micron Reflectance Spectroscopy of Carbonaceous Chondrites under Asteroid-like Conditions

Charles A. Hibbitts, Driss Takir, Karen R. Stockstill-Cahill, Yusuke Nakauchi

arxiv:1904.09453 v1 · 2019-04-20 · 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{VMHHUUG5KRX3AXBVQSXFQJEBP4}

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	2026-05-17T23:42:19.699182Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ab0e7a50dd546fb05c3584ae5824817f19512880bf331fefd345815252619b6d

Aliases

arxiv: 1904.09453 · arxiv_version: 1904.09453v1 · doi: 10.48550/arxiv.1904.09453 · pith_short_12: VMHHUUG5KRX3 · pith_short_16: VMHHUUG5KRX3AXBV · pith_short_8: VMHHUUG5

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/VMHHUUG5KRX3AXBVQSXFQJEBP4 \
  | 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: ab0e7a50dd546fb05c3584ae5824817f19512880bf331fefd345815252619b6d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9c5723c4d6a596710b92a966040f3d9298c5dac78a5210f4938300e342e91853",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2019-04-20T15:10:56Z",
    "title_canon_sha256": "bf6b62ec3f21b8f24f394e9b12419020f748c5a3d72e1156e5a02cbe83a72236"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.09453",
    "kind": "arxiv",
    "version": 1
  }
}