Pith Number

pith:7EWEI3HM

pith:2013:7EWEI3HMQW6JJ56Z3EENLYAZIQ

not attested not anchored not stored refs pending

Packing a Knapsack of Unknown Capacity

Max Klimm, Nicole Megow, Sebastian Stiller, Yann Disser

arxiv:1307.2806 v1 · 2013-07-10 · cs.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7EWEI3HMQW6JJ56Z3EENLYAZIQ}

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	2026-05-18T03:18:50.392958Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f92c446cec85bc94f7d9d908d5e019442cd8a07914774bd6691114f7672f9505

Aliases

arxiv: 1307.2806 · arxiv_version: 1307.2806v1 · doi: 10.48550/arxiv.1307.2806 · pith_short_12: 7EWEI3HMQW6J · pith_short_16: 7EWEI3HMQW6JJ56Z · pith_short_8: 7EWEI3HM

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/7EWEI3HMQW6JJ56Z3EENLYAZIQ \
  | 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: f92c446cec85bc94f7d9d908d5e019442cd8a07914774bd6691114f7672f9505

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6d9ffe00f10218b43330b52098b53f2652ea4211195b55be39701d03f37f4455",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2013-07-10T14:40:38Z",
    "title_canon_sha256": "ddc98dc32c08ad65fdb6f3f924ffb3970c79b7f2857101775a77d1e6cb3f01a4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1307.2806",
    "kind": "arxiv",
    "version": 1
  }
}