Pith Number

pith:NMVGVG4R

pith:2018:NMVGVG4RKOPO5UW3UCUQU6O76H

not attested not anchored not stored refs pending

Flexible recovery of uniqueness and immutability (Extended Version)

Elena Zucca, James Cone, Marco Servetto, Paola Giannini

arxiv:1807.00137 v2 · 2018-06-30 · cs.PL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NMVGVG4RKOPO5UW3UCUQU6O76H}

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	2026-05-18T00:10:21.533387Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6b2a6a9b91539eeed2dba0a90a79dff1df74bb30dcc732dd5f51e56348c94ae8

Aliases

arxiv: 1807.00137 · arxiv_version: 1807.00137v2 · doi: 10.48550/arxiv.1807.00137 · pith_short_12: NMVGVG4RKOPO · pith_short_16: NMVGVG4RKOPO5UW3 · pith_short_8: NMVGVG4R

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/NMVGVG4RKOPO5UW3UCUQU6O76H \
  | 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: 6b2a6a9b91539eeed2dba0a90a79dff1df74bb30dcc732dd5f51e56348c94ae8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4fb2a8e3a51c66e3cf2f7d3f4c66e12718279327f5901d965092f863440c4676",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.PL",
    "submitted_at": "2018-06-30T08:00:49Z",
    "title_canon_sha256": "462b307b7bae10ccf4e947c604335e56dfcc878fa1123bdf9e70064e56b27c0b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.00137",
    "kind": "arxiv",
    "version": 2
  }
}