Tax · x402 · active demand

The Standard Reserve (TSR), an on-chain reserve protocol on Robinhood Chain

The Standard Reserve (TSR), an on-chain reserve protocol on Robinhood Chain. How concentrated Charter and Branch ownership is across wallets, including a standard concentration score and a genesis-versus-auction breakdown.

by api.onesource.io · discovered, not yet claimed by its owner · updated 2026-10-08

30d calls33

30d payers33

MethodGET

Outputjson

Mirrored from Coinbase's public x402 Bazaar. The description is the provider's own text and has not been reviewed here; the payment requirements are copied as published.

What it does

Tags: bazaar

Call contract

Method: GET
Input: query parameters
Output: json
Last paid call: 2026-10-08

Input example from Bazaar metadata

{}

Output example

{
  "as_of_block": 63499000,
  "basis": "derived",
  "branch_distribution": [
    {
      "bucket": "1",
      "charters": 12
    }
  ],
  "burned_charters": 2,
  "chain_id": 4663,
  "cohort_split": {
    "auction": {
      "branches": 332,
      "charters": 38,
      "retirements": 11,
      "revocations": 1
    },
    "genesis": {
      "branches": 180,
      "charters": 20,
      "retirements": 3,
      "revocations": 0
    },
    "unknown": {
      "branches": 0,
      "charters": 2,
      "retirements": 0,
      "revocations": 0
    }
  },
  "concentration_hhi": 812.4,
  "concentration_hhi_label": "Herfindahl-Hirschman Index (0-10000 scale) of owner share of live branches; conventionally, <1500 is unconcentrated, 1500-2500 moderately concentrated, >2500 highly concentrated",
  "live_charters": 58,
  "network": "robinhood",
  "scope": "top_owners, branch_distribution and concentration_hhi cover LIVE (not burned) charters only; cohort_split covers every charter, live and burned, since mint origin is a permanent fact about a charter",
  "top_owners": [
    {
      "branches": 74,
      "charters": 6,
      "owner": "0x5977b25419f9c0ddcb2f89fe204955622f4f57ea",
      "share_of_live_branches": 0.1445
    }
  ],
  "total_branches_live": 512,
  "unique_owners": 41
}

Use with an agent

Discover. Agents find this listing with GET https://bazaar.saylorinnovations.com/discovery/search?query=…, the MCP tool search_resources, or /discovery/resources.
Inspect. Fetch /resources/25742.json for the price and payment options.
Pay. Call GET https://api.onesource.io/standard/v1/holders/concentration. The provider answers 402 with its payment requirements. An x402 client signs one of the options below and retries with PAYMENT-SIGNATURE.
Execute. The provider returns 200 with the data. Agent Bazaar is not in the request path and never sees your payment.

For humans

You don't need an account or an API key; you need a wallet holding a small amount of USDC on Base, and an x402-capable client (see the examples below). Call the endpoint unpaid first to see exactly what it asks for.

Pricing & payment

Price: $0.02 / request
Protocol: x402 v2
Auth: No account or API key. Pay per request.
Networks: Base
Demand: 33 calls · 33 unique payers in 30d (public x402 Bazaar data)

x402 payment requirements

Scheme	Network	Asset	Amount	Pay to	Timeout
exact	Base eip155:8453	USDC	$0.02	0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea	3600s

accepts[] (raw JSON)

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "payTo": "0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "20000",
    "amountUsd": 0.02,
    "maxTimeoutSeconds": 3600
  }
]

Schemas

Output schema (JSON Schema)

{
  "properties": {
    "example": {
      "description": "Endpoint-specific response payload",
      "properties": {
        "as_of_block": {
          "type": "integer"
        },
        "basis": {
          "type": "string"
        },
        "branch_distribution": {
          "items": {
            "properties": {
              "bucket": {
                "type": "string"
              },
              "charters": {
                "type": "integer"
              }
            },
            "type": "object"
          },
          "type": "array"
        },
        "burned_charters": {
          "type": "integer"
        },
        "chain_id": {
          "type": "integer"
        },
        "cohort_split": {
          "properties": {
            "auction": {
              "properties": {
                "branches": {
                  "type": "integer"
                },
                "charters": {
                  "type": "integer"
                },
                "retirements": {
                  "type": "integer"
                },
                "revocations": {
                  "type": "integer"
                }
              },
              "type": "object"
            },
            "genesis": {
              "properties": {
                "branches": {
                  "type": "integer"
                },
                "charters": {
                  "type": "integer"
                },
                "retirements": {
                  "type": "integer"
                },
                "revocations": {
                  "type": "integer"
                }
              },
              "type": "object"
            },
            "unknown": {
              "properties": {
                "branches": {
                  "type": "integer"
                },
                "charters": {
                  "type": "integer"
                },
                "retirements": {
                  "type": "integer"
                },
                "revocations": {
                  "type": "integer"
                }
              },
              "type": "object"
            }
          },
          "type": "object"
        },
        "concentration_hhi": {
          "type": "number"
        },
        "concentration_hhi_label": {
          "type": "string"
        },
        "live_charters": {
          "type": "integer"
        },
        "network": {
          "type": "string"
        },
        "scope": {
          "type": "string"
        },
        "top_owners": {
          "items": {
            "properties": {
              "branches": {
                "type": "integer"
              },
              "charters": {
                "type": "integer"
              },
              "owner": {
                "type": "string"
              },
              "share_of_live_branches": {
                "type": "number"
              }
            },
            "type": "object"
          },
          "type": "array"
        },
        "total_branches_live": {
          "type": "integer"
        },
        "unique_owners": {
          "type": "integer"
        }
      },
      "type": "object"
    },
    "type": {
      "type": "string"
    }
  },
  "required": [
    "type"
  ],
  "type": "object"
}

Example shape — generated from the schema, not a captured live response

{
  "example": {
    "as_of_block": 0,
    "basis": "string",
    "branch_distribution": [
      {
        "bucket": "string",
        "charters": 0
      }
    ],
    "burned_charters": 0,
    "chain_id": 0,
    "cohort_split": {
      "auction": {
        "branches": 0,
        "charters": 0,
        "retirements": 0,
        "revocations": 0
      },
      "genesis": {
        "branches": 0,
        "charters": 0,
        "retirements": 0,
        "revocations": 0
      },
      "unknown": {
        "branches": 0,
        "charters": 0,
        "retirements": 0,
        "revocations": 0
      }
    },
    "concentration_hhi": 0,
    "concentration_hhi_label": "string",
    "live_charters": 0,
    "network": "string",
    "scope": "string",
    "top_owners": [
      {
        "branches": 0,
        "charters": 0,
        "owner": "string",
        "share_of_live_branches": 0
      }
    ],
    "total_branches_live": 0,
    "unique_owners": 0
  },
  "type": "string"
}

Examples

curl

curl "https://api.onesource.io/standard/v1/holders/concentration"
# -> 402 Payment Required, accepts[] lists how to pay
# retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid

JavaScript

const res = await fetch("https://api.onesource.io/standard/v1/holders/concentration");
if (res.status === 402) {
  const { accepts } = await res.json();
  // pay one of accepts[] via an x402 client, then retry with the payment header
}

Python

import httpx
res = httpx.get("https://api.onesource.io/standard/v1/holders/concentration")
if res.status_code == 402:
    accepts = res.json()["accepts"]
    # pay one of accepts[] via an x402 client, then retry with the payment header

Details

Provider: api.onesource.io
Endpoint: https://api.onesource.io/standard/v1/holders/concentration
Machine-readable: /resources/25742.json