Pith Number

pith:3LWQPDED

pith:2013:3LWQPDEDXDZ2LLMEVRDRFXOC3J

not attested not anchored not stored refs pending

Calibration of X-ray absorption in our Galaxy

A.P. Beardmore, N.R. Tanvir, P.T. O'Brien, R.L.C. Starling, R. Willingale

arxiv:1303.0843 v1 · 2013-03-04 · astro-ph.HE · astro-ph.CO

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	2026-05-18T01:51:17.177613Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

daed078c83b8f3a5ad84ac4712ddc2da5841826e47c92c8054926cbae5e1e242

Aliases

arxiv: 1303.0843 · arxiv_version: 1303.0843v1 · doi: 10.48550/arxiv.1303.0843 · pith_short_12: 3LWQPDEDXDZ2 · pith_short_16: 3LWQPDEDXDZ2LLME · pith_short_8: 3LWQPDED

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/3LWQPDEDXDZ2LLMEVRDRFXOC3J \
  | 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: daed078c83b8f3a5ad84ac4712ddc2da5841826e47c92c8054926cbae5e1e242

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4c6fe62d304f0d9979fef883a060238602e908da2fcbbe35ec9b1a7de8e04d50",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2013-03-04T21:00:30Z",
    "title_canon_sha256": "29134134585916dca01e990b9b217779a14d09aacec2b753324f2b3e5e298c6a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1303.0843",
    "kind": "arxiv",
    "version": 1
  }
}