Pith Number

pith:O5Z3CUTI

pith:2009:O5Z3CUTI43MKXSMRRBTPQHJ6RQ

not attested not anchored not stored refs pending

Reliable Identification of RFID Tags Using Multiple Independent Reader Sessions

Karsten Fyhn Nielsen, Petar Popovski, Rasmus Jacobsen, Torben Larsen

arxiv:0904.2441 v1 · 2009-04-16 · cs.IT · math.IT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{O5Z3CUTI43MKXSMRRBTPQHJ6RQ}

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	2026-05-18T00:57:58.221152Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7773b15268e6d8abc9918866f81d3e8c23d57606b65e664a279999b1c7d2278c

Aliases

arxiv: 0904.2441 · arxiv_version: 0904.2441v1 · doi: 10.48550/arxiv.0904.2441 · pith_short_12: O5Z3CUTI43MK · pith_short_16: O5Z3CUTI43MKXSMR · pith_short_8: O5Z3CUTI

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/O5Z3CUTI43MKXSMRRBTPQHJ6RQ \
  | 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: 7773b15268e6d8abc9918866f81d3e8c23d57606b65e664a279999b1c7d2278c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "11e2dd3a6741b9f11f9db8ad5655810f14cd1d6e09a87965d5cae1171436f68e",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2009-04-16T07:33:40Z",
    "title_canon_sha256": "e1d349446b24e50dc7e5c2fc8afe6508838bbbb8f51f67fed4a27ba06e424930"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0904.2441",
    "kind": "arxiv",
    "version": 1
  }
}