Pith Number

pith:QTB77YRJ

pith:2020:QTB77YRJXKR75P6COQFVQYUGWK

not attested not anchored not stored refs pending

Towards a Modelling Framework for Self-Sovereign Identity Systems

Alun Preece, Iain Barclay, Ian Taylor, Maria Freytsis, Sherri Bucher, Swapna Radha

arxiv:2009.04327 v2 · 2020-09-09 · cs.SE · cs.MA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QTB77YRJXKR75P6COQFVQYUGWK}

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	2026-07-05T01:34:24.728239Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

84c3ffe229baa3febfc2740b586286b2b46a354385de920f90545f8ee81655aa

Aliases

arxiv: 2009.04327 · arxiv_version: 2009.04327v2 · doi: 10.48550/arxiv.2009.04327 · pith_short_12: QTB77YRJXKR7 · pith_short_16: QTB77YRJXKR75P6C · pith_short_8: QTB77YRJ

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/QTB77YRJXKR75P6COQFVQYUGWK \
  | 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: 84c3ffe229baa3febfc2740b586286b2b46a354385de920f90545f8ee81655aa

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9344cc23cd98cc7b34fec6d57a85e0f9f663a65ed81a22e9e4b0bad2bd8b9901",
    "cross_cats_sorted": [
      "cs.MA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SE",
    "submitted_at": "2020-09-09T14:32:28Z",
    "title_canon_sha256": "57c0f151d5f0964bd5e5fd92aaf07e7c53378ead7d7afb0dfe11533b08915f89"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2009.04327",
    "kind": "arxiv",
    "version": 2
  }
}