Pith Number

pith:IHBSJYRS

pith:2009:IHBSJYRS3XI54FDYWBPIQBR7RX

not attested not anchored not stored refs pending

The exploration of the unknown

J. Lazio, J.M. Cordes, K.I. Kellermann, P. Wilkinson, R.D. Ekers

arxiv:0912.4441 v1 · 2009-12-22 · astro-ph.IM

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

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	2026-05-18T01:04:59.312076Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

41c324e232ddd1de1478b05e88063f8de1c7fccb690043df8d0015a728f5d08c

Aliases

arxiv: 0912.4441 · arxiv_version: 0912.4441v1 · doi: 10.48550/arxiv.0912.4441 · pith_short_12: IHBSJYRS3XI5 · pith_short_16: IHBSJYRS3XI54FDY · pith_short_8: IHBSJYRS

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/IHBSJYRS3XI54FDYWBPIQBR7RX \
  | 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: 41c324e232ddd1de1478b05e88063f8de1c7fccb690043df8d0015a728f5d08c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "687298c4e18d9212617929c8cde43243c14a50f2e93c5ad6b802449bffd3f899",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2009-12-22T16:34:33Z",
    "title_canon_sha256": "225346145e615bcaf6c84d1a3c40db11656d77d51b338dcaa5c63e75cb950c5c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0912.4441",
    "kind": "arxiv",
    "version": 1
  }
}