Pith Number

pith:P4IM32CH

pith:2012:P4IM32CHRUHM54AQYEYHMNGOKJ

not attested not anchored not stored refs pending

Open Annotations on Multimedia Web Resources

Bernhard Haslhofer, Herbert Van de Sompel, Rainer Simon, Robert Sanderson

arxiv:1202.6354 v1 · 2012-02-28 · cs.DL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{P4IM32CHRUHM54AQYEYHMNGOKJ}

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	2026-05-18T04:01:13.599687Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7f10cde8478d0ecef010c1307634ce52499188f4907caf19308ef0a0e996a1cd

Aliases

arxiv: 1202.6354 · arxiv_version: 1202.6354v1 · doi: 10.48550/arxiv.1202.6354 · pith_short_12: P4IM32CHRUHM · pith_short_16: P4IM32CHRUHM54AQ · pith_short_8: P4IM32CH

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/P4IM32CHRUHM54AQYEYHMNGOKJ \
  | 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: 7f10cde8478d0ecef010c1307634ce52499188f4907caf19308ef0a0e996a1cd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e0de404faac275007ad0c0831e75fc7f09d8eb81a447fe02235177288a3d37b1",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/publicdomain/",
    "primary_cat": "cs.DL",
    "submitted_at": "2012-02-28T20:46:54Z",
    "title_canon_sha256": "191e6396b0f93e6754ecf4e8c45cbca83c1dc273141ae09363bf822cf7a0add1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1202.6354",
    "kind": "arxiv",
    "version": 1
  }
}