Pith Number

pith:JSPQPTFY

pith:2016:JSPQPTFYERVD5U3OQBPQTGTQI6

not attested not anchored not stored refs pending

Multi-prover Proof-of-Retrievability

Douglas R. Stinson, Jalaj Upadhyay, Maura B. Paterson

arxiv:1603.02671 v1 · 2016-03-08 · cs.CR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{JSPQPTFYERVD5U3OQBPQTGTQI6}

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	2026-05-18T01:19:22.636485Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4c9f07ccb8246a3ed36e805f099a70478a34f666d60e2e3351e546f8353f2633

Aliases

arxiv: 1603.02671 · arxiv_version: 1603.02671v1 · doi: 10.48550/arxiv.1603.02671 · pith_short_12: JSPQPTFYERVD · pith_short_16: JSPQPTFYERVD5U3O · pith_short_8: JSPQPTFY

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/JSPQPTFYERVD5U3OQBPQTGTQI6 \
  | 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: 4c9f07ccb8246a3ed36e805f099a70478a34f666d60e2e3351e546f8353f2633

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "02e786d1a52ea46a530f03b7b4bf5f9e06a888bd3a1688646b5d87af30f401c8",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CR",
    "submitted_at": "2016-03-08T20:52:02Z",
    "title_canon_sha256": "de11018c952907c8b3ab21c6d13a29957a145b15e219505f4d586c5d47dbd649"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1603.02671",
    "kind": "arxiv",
    "version": 1
  }
}