Pith Number

pith:NPGQV2DS

pith:2018:NPGQV2DSYLK35TLILNE2YIQ7JO

not attested not anchored not stored refs pending

Triggering the Activation of Main Belt Comets: The Effect of Porosity

Christoph M. Schaefer, Nader Haghighipour, Oliver J. Wandel, Thomas I. Maindl

arxiv:1801.08247 v1 · 2018-01-25 · 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{NPGQV2DSYLK35TLILNE2YIQ7JO}

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	2026-05-18T00:20:35.430776Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6bcd0ae872c2d5becd685b49ac221f4ba03d3639134e616d4a73800ec75115fb

Aliases

arxiv: 1801.08247 · arxiv_version: 1801.08247v1 · doi: 10.48550/arxiv.1801.08247 · pith_short_12: NPGQV2DSYLK3 · pith_short_16: NPGQV2DSYLK35TLI · pith_short_8: NPGQV2DS

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/NPGQV2DSYLK35TLILNE2YIQ7JO \
  | 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: 6bcd0ae872c2d5becd685b49ac221f4ba03d3639134e616d4a73800ec75115fb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6c860d53020730f191895a3fe2be37012488f506eee3b68f44e0953aa9fd862e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2018-01-25T00:41:47Z",
    "title_canon_sha256": "53ea9aecb9d222c186f2e4873c534a767ddf4e5ff9485bfa32f6f75f0a5c0656"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1801.08247",
    "kind": "arxiv",
    "version": 1
  }
}