Pith Number

pith:GCEHECAO

pith:2015:GCEHECAOCB2GROJPJMEJFE2PO5

not attested not anchored not stored refs pending

Deep Chandra observations of Pictor A

A. Siemiginowska, D. M. Worrall, E. Lenc, E. S. Perlman, H. L. Marshall, J. H. Croston, J.L. Goodger, L. Stawarz, M. Birkinshaw, M. J. Hardcastle

arxiv:1510.08392 v1 · 2015-10-28 · astro-ph.HE

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	2026-05-18T01:24:51.129946Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

308872080e107468b92f4b0892934f7741e2ca63664b0087c1fef2d32dcade7a

Aliases

arxiv: 1510.08392 · arxiv_version: 1510.08392v1 · doi: 10.48550/arxiv.1510.08392 · pith_short_12: GCEHECAOCB2G · pith_short_16: GCEHECAOCB2GROJP · pith_short_8: GCEHECAO

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/GCEHECAOCB2GROJPJMEJFE2PO5 \
  | 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: 308872080e107468b92f4b0892934f7741e2ca63664b0087c1fef2d32dcade7a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9fe08e2335cbe78c9d82db1ae14ea005f5b67fa4f5884b1f09be3a59001eea45",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2015-10-28T17:48:14Z",
    "title_canon_sha256": "ed1d770f9c05041a5678f1d00ca5030a1e7008f3bf3bcb0119c00619dbc32259"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1510.08392",
    "kind": "arxiv",
    "version": 1
  }
}