Pith Number

pith:EWDLSBSD

pith:2016:EWDLSBSD25L3OTEQ7CDVZGZW42

not attested not anchored not stored refs pending

Optical Identification of Cepheids in 19 Host Galaxies of Type Ia Supernovae and NGC 4258 with the Hubble Space Telescope

Adam G. Riess, Alexei V. Filippenko, Ariel Goobar, Brad E. Tucker, Douglas L. Welch, Jeffrey M. Silverman, Lucas M. Macri, Rahman Amanullah, Ryan Chornock, Ryan J. Foley, Samantha L. Hoffmann, Stefano Casertano, Wenlong Yuan

arxiv:1607.08658 v2 · 2016-07-28 · astro-ph.SR · astro-ph.CO · astro-ph.GA

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	2026-05-18T01:02:37.519579Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2586b90643d757b74c90f8875c9b36e6b9f2cce80f13bea90e92ece0253c33e7

Aliases

arxiv: 1607.08658 · arxiv_version: 1607.08658v2 · doi: 10.48550/arxiv.1607.08658 · pith_short_12: EWDLSBSD25L3 · pith_short_16: EWDLSBSD25L3OTEQ · pith_short_8: EWDLSBSD

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/EWDLSBSD25L3OTEQ7CDVZGZW42 \
  | 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: 2586b90643d757b74c90f8875c9b36e6b9f2cce80f13bea90e92ece0253c33e7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "98f9eb42b2c80d3da2e64bd4f348a6caf76cfa0ec33dbc5793c71fca9572cd18",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2016-07-28T22:56:00Z",
    "title_canon_sha256": "2937c1ac74bf764a0d150c0c2a9e08c4f33e4c9ee19bfbe2a144922e81748fba"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1607.08658",
    "kind": "arxiv",
    "version": 2
  }
}