Pith Number

pith:GXNZ2I7X

pith:2026:GXNZ2I7XRSULLRRP427YBTQZK3

not attested not anchored not stored refs pending

SPECTRA: Synthetic IR Test Collections with Relevance Oracles and Controlled Distractor Diagnostics

Eric Liang

arxiv:2605.31575 v1 · 2026-05-29 · cs.IR · cs.AI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{GXNZ2I7XRSULLRRP427YBTQZK3}

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	2026-06-01T02:04:13.969246Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

35db9d23f78ca8b5c62fe6bf80ce1956e59f5e1adf4d5793a7994436ae117c34

Aliases

arxiv: 2605.31575 · arxiv_version: 2605.31575v1 · doi: 10.48550/arxiv.2605.31575 · pith_short_12: GXNZ2I7XRSUL · pith_short_16: GXNZ2I7XRSULLRRP · pith_short_8: GXNZ2I7X

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/GXNZ2I7XRSULLRRP427YBTQZK3 \
  | 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: 35db9d23f78ca8b5c62fe6bf80ce1956e59f5e1adf4d5793a7994436ae117c34

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f396c985d1244a57722d816e290e2415fdc819f0a1d12a9ebbf9e951bcd3aa5d",
    "cross_cats_sorted": [
      "cs.AI"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.IR",
    "submitted_at": "2026-05-29T17:44:15Z",
    "title_canon_sha256": "5d62d0c30ce676ea0205c1d79835f43762f3f56d35ca12a90045ad2a426ca8fd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.31575",
    "kind": "arxiv",
    "version": 1
  }
}