Pith Number

pith:QMMV4UB2

pith:2018:QMMV4UB2IDOF5LNDRVFDXTNYP6

not attested not anchored not stored refs pending

MULTIGRAIN: A smoothed particle hydrodynamics algorithm for multiple small dust grains and gas

Daniel J. Price, Guillaume Laibe, Mark A. Hutchison

arxiv:1802.03213 v1 · 2018-02-09 · astro-ph.IM · 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{QMMV4UB2IDOF5LNDRVFDXTNYP6}

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	2026-05-18T00:22:22.528360Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

83195e503a40dc5eada38d4a3bcdb87f811e17b231f77ae585226b24e7eb8177

Aliases

arxiv: 1802.03213 · arxiv_version: 1802.03213v1 · doi: 10.48550/arxiv.1802.03213 · pith_short_12: QMMV4UB2IDOF · pith_short_16: QMMV4UB2IDOF5LND · pith_short_8: QMMV4UB2

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/QMMV4UB2IDOF5LNDRVFDXTNYP6 \
  | 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: 83195e503a40dc5eada38d4a3bcdb87f811e17b231f77ae585226b24e7eb8177

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "558bcb9343a42c2b06565073888c0018629e7897a287c899e2dce0ba768c59fe",
    "cross_cats_sorted": [
      "astro-ph.EP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2018-02-09T11:49:39Z",
    "title_canon_sha256": "005689da90f141e60b0d17041658edeb068bc72a3445b24379b9236b808ee09d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.03213",
    "kind": "arxiv",
    "version": 1
  }
}