api.carbon-cashmere.de
Base, Arbitrum, Polygon, World Chain · payout 0xf8b2dd46542175ad46e14e6133340e652665f2ee
Answers HTTP 402
0 of 4 probed endpoints answered HTTP 402 with a parseable payment payload
checked 2026-09-17
Method: one unpaid request per listed endpoint. A 402 with a payment payload a client could parse counts. Nothing is paid.
x402-style payments, last 7 days (Base)
5 x402-style payments from 3 distinct payers, $0.10 USDC in the last 7 days (Base, exact read)
window ended 2026-10-05
- Payments
- 5
- Outside payers
- 3
- USDC
- 0.1
All USDC received at this payout address: $0.10 (includes payments that are not x402)
Method: counted when the transaction carries a signed USDC authorization (EIP-3009), the settlement x402's exact scheme uses. Some non-x402 gasless sends use it too.
Reading: x402-style payments to this payout address on Base, exact read of the 7 days to 2026-10-05, every block of the window: counted when the transaction carries a signed USDC authorization (EIP-3009), the settlement x402's `exact` scheme uses. Some non-x402 gasless sends use it too; Sato Hub's own payer wallets are left out
Delivery is not measured. We never send a payment, so we never observe what a paid call returns. Unknown means we hold no reading, not that anything failed.
Chains · one payout address, each chain read on its own
| Chain | Payout address | Listings | Answers 402 | x402-style payments |
|---|---|---|---|---|
| Base | 0xf8b2dd46542175ad46e14e6133340e652665f2ee | 24 | 0 of 1 probed endpoints answered HTTP 402 with a parseable payment payload 2026-09-17 | 5 x402-style payments from 3 distinct payers, $0.10 USDC in the last 7 days (Base, exact read) |
| Arbitrum | 0xf8b2dd46542175ad46e14e6133340e652665f2ee | 24 | 0 of 1 probed endpoints answered HTTP 402 with a parseable payment payload 2026-09-17 | unknown. not measured on this chain yet |
| Polygon | 0xf8b2dd46542175ad46e14e6133340e652665f2ee | 24 | 0 of 1 probed endpoints answered HTTP 402 with a parseable payment payload 2026-09-17 | unknown. not measured on this chain yet |
| World Chain | 0xf8b2dd46542175ad46e14e6133340e652665f2ee | 24 | 0 of 1 probed endpoints answered HTTP 402 with a parseable payment payload 2026-09-17 | unknown. not measured on this chain yet |
- Hosts
- api.carbon-cashmere.de
- Listings
- 96 registered in the x402 catalogue
- Price range
- $0.020 to $0.050 per call, as registered
- Categories (auto)
- Market data (48), Onchain data (40), Developer tools (4), Web data (4)
- First seen
- 2026-10-05 · last seen 2026-10-05
Claim this merchant
Sign a message from the payout address 0xf8b2dd…65f2ee to claim this page or download its payment ledger. Claiming proves control of the payout key. It says nothing about the service behind the address, and it does not change how this merchant is ranked. No email, no account: the signature is the whole credential, and signing a message costs no gas and moves nothing.
Registrations · 96
| Endpoint | Chain | Category | Price | Catalogue date |
|---|---|---|---|---|
https://api.carbon-cashmere.de/v1/bittensor-derivatives/alpha-price-history/:netuid Time-series of alpha-token price for a single Bittensor subnet (window: 1h/24h/7d/30d). Sourced from bittensor_alpha_prices captured every 10 minutes. AI agent API for alpha-token trading signals. Informational research… | Base | Market data | $0.02 | 2026-09-08 |
https://api.carbon-cashmere.de/v1/bittensor-derivatives/alpha-prices Latest alpha-token price per Bittensor subnet (TAO + USD). All 129 subnets in one call. AI agent API for cross-subnet price arbitrage, dTAO portfolio rebalancing. Informational research data — not investment advice. | Base | Market data | $0.02 | 2026-09-08 |
https://api.carbon-cashmere.de/v1/bittensor-derivatives/network-fundamentals Latest TAO network-wide fundamentals: total issuance, total stake, free float, supply percentage mined, stake ratio. Snapshot every 10 min. | Base | Market data | $0.02 | 2026-09-30 |
https://api.carbon-cashmere.de/v1/bittensor-derivatives/registration-cost-history Hourly Bittensor subnet registration activity (NeuronRegistered event count per subnet) + current burn-cost per subnet. Useful for predicting cheap-registration windows. | Base | Market data | $0.02 | 2026-09-08 |
https://api.carbon-cashmere.de/v1/bittensor-derivatives/subnet/:netuid/emission-trend Hourly emission and stake trend for a Bittensor subnet (window: 1h/24h/7d/30d). Derived from bittensor_metagraph snapshots. AI agent API for subnet-momentum tracking. Informational research data — not investment advice. | Base | Web data | $0.02 | 2026-09-08 |
https://api.carbon-cashmere.de/v1/btc-derivatives/blocks-range Bulk Bitcoin block extract (max 144 blocks per call = $1.44 cap). Returns array of per-block summaries (height, time, miner pool, tx count, witness/taproot/ordinals/op_return stats, total output, coinbase reward). | Base | Market data | $0.02 | 2026-09-10 |
https://api.carbon-cashmere.de/v1/btc-derivatives/blocks/:height Deep per-block Bitcoin extract. Returns miner-pool attribution, witness/taproot adoption %, Ordinals inscription count, OP_RETURN byte volume, fee percentiles (10/25/50/75/90), UTXO delta, segwit %, total output BTC, bl… | Base | Market data | $0.02 | 2026-09-09 |
https://api.carbon-cashmere.de/v1/btc-derivatives/coinbase-messages Curated Bitcoin coinbase scriptSig messages (printable ASCII only). Pool tags, BIP-comment campaigns, political statements. Window up to 7d. | Base | Onchain data | $0.02 | 2026-10-04 |
https://api.carbon-cashmere.de/v1/btc-derivatives/diversity Bitcoin own-node peer-network diversity (IPv4/IPv6/Tor/I2P/CJDNS distribution) + privacy share. AI agent API for privacy researchers, node-operator tooling, network-health analytics. Informational research data — not in… | Base | Market data | $0.02 | 2026-09-09 |
https://api.carbon-cashmere.de/v1/btc-derivatives/fee-curve Bitcoin smart-fee curve for 1/3/6/12/24/144-block confirmation targets + trend classification (rising/stable/falling/surging) from 2h moving average. | Base | Onchain data | $0.02 | 2026-09-09 |
https://api.carbon-cashmere.de/v1/btc-derivatives/mempool-pressure Bitcoin mempool pressure classification (low/medium/high/extreme) + fee buckets (0-1, 1-2, 2-5, 5-10, 10-20, 20-50, 50-100, 100-200, 200+ sat/vB) + RBF count + CPFP candidate count. Updated every 5 min. | Base | Onchain data | $0.02 | 2026-09-11 |
https://api.carbon-cashmere.de/v1/btc-derivatives/ordinals-flow Hourly Bitcoin Ordinals inscriptions + OP_RETURN byte volume. Inscriptions detected via witness-envelope magic bytes (cord). Window up to 7d. | Base | Market data | $0.02 | 2026-09-09 |
https://api.carbon-cashmere.de/v1/kaspa-derivatives/blocks/:block_hash Single Kaspa block extract with full DAG topology (parents, selected-parent, blue/daa score, chain-block flag). AI agent API for DAG-aware indexers. Informational research data — not investment advice. | Base | Onchain data | $0.02 | 2026-09-10 |
https://api.carbon-cashmere.de/v1/kaspa-derivatives/dag-state Kaspa BlockDAG topology snapshot: tips, sink, virtual chain, pruning point, blue scores. For DAG-state monitoring, side-branch detection, sync verification. | Base | Developer tools | $0.02 | 2026-09-10 |
https://api.carbon-cashmere.de/v1/kaspa-derivatives/diversity Kaspa own-node peer-network breakdown (IPv4/IPv6) + user-agent distribution. AI agent API for network-health monitoring, node-operator analytics. Informational research data — not investment advice. | Base | Onchain data | $0.02 | 2026-09-10 |
https://api.carbon-cashmere.de/v1/kaspa-derivatives/mempool-pulse Kaspa mempool transaction count over time. AI agent API for mempool-state regime detection. Informational research data — not investment advice. | Base | Onchain data | $0.02 | 2026-10-04 |
https://api.carbon-cashmere.de/v1/kaspa-derivatives/recent-blocks Recent Kaspa blocks (max 144 per call = $1.44 cap). Optional chain_only flag to filter selected-parent chain blocks. AI agent API for backtesters and indexers. Informational research data — not investment advice. | Base | Market data | $0.02 | 2026-09-29 |
https://api.carbon-cashmere.de/v1/subtensor-derivatives/block-metrics Recent per-block aggregation of Bittensor events: neuron_registrations, weight_sets, bond_sets, child_key_sets, stake_added/removed, root_claimed, balance_transfers + total TAO. | Base | Onchain data | $0.02 | 2026-09-11 |
https://api.carbon-cashmere.de/v1/kaspa-derivatives/fee-estimate Kaspa live fee market: priority/normal/low feerate buckets from the node's own estimator (Toccata RPC). Informational research data — not investment advice. | Base | Onchain data | $0.03 | 2026-09-11 |
https://api.carbon-cashmere.de/v1/bittensor-derivatives/subnet/:netuid/metagraph Full metagraph snapshot for 13 tracked Bittensor subnets [1,3,4,13,15,18,26,56,62,64,91,120,123]: summary stats + all neurons with stake/incentive/dividends/emission/trust/validator_permit. | Base | Onchain data | $0.05 | 2026-09-11 |
https://api.carbon-cashmere.de/v1/kaspa-derivatives/fee-regime Kaspa fee-market regime: fee-bucket distribution incl. the sub-floor segment the Toccata minimum displaces. Unique pre/post-hardfork fee analytics. Informational research data — not investment advice. | Base | Market data | $0.05 | 2026-09-11 |
https://api.carbon-cashmere.de/v1/kaspa-derivatives/mining-economics Kaspa mining economics from our own archival node: KAS + USD revenue per TH/s/day, block subsidy measured live from coinbase payloads, DAG-aware emission rate, electricity-cost model with profit margin and breakeven pri… | Base | Market data | $0.05 | 2026-09-11 |
https://api.carbon-cashmere.de/v1/subtensor-derivatives/evm-activity EVM-on-Bittensor Ethereum.Executed call count per hour. Tracks TaoEVM dApp adoption. AI agent API for cross-VM adoption analysts. Informational research data — not investment advice. | Base | Onchain data | $0.05 | 2026-09-11 |
https://api.carbon-cashmere.de/v1/subtensor-derivatives/transfer-flow Bittensor BalancesTransfer count + total TAO volume per hour. AI agent API for TAO whale-watch and treasury-movement monitoring. Informational research data — not investment advice. | Base | Market data | $0.05 | 2026-09-11 |
https://api.carbon-cashmere.de/v1/bittensor-derivatives/alpha-price-history/:netuid Time-series of alpha-token price for a single Bittensor subnet (window: 1h/24h/7d/30d). Sourced from bittensor_alpha_prices captured every 10 minutes. AI agent API for alpha-token trading signals. Informational research… | Polygon | Market data | unknown | 2026-09-08 |
https://api.carbon-cashmere.de/v1/bittensor-derivatives/alpha-price-history/:netuid Time-series of alpha-token price for a single Bittensor subnet (window: 1h/24h/7d/30d). Sourced from bittensor_alpha_prices captured every 10 minutes. AI agent API for alpha-token trading signals. Informational research… | Arbitrum | Market data | unknown | 2026-09-08 |
https://api.carbon-cashmere.de/v1/bittensor-derivatives/alpha-price-history/:netuid Time-series of alpha-token price for a single Bittensor subnet (window: 1h/24h/7d/30d). Sourced from bittensor_alpha_prices captured every 10 minutes. AI agent API for alpha-token trading signals. Informational research… | World Chain | Market data | unknown | 2026-09-08 |
https://api.carbon-cashmere.de/v1/bittensor-derivatives/alpha-prices Latest alpha-token price per Bittensor subnet (TAO + USD). All 129 subnets in one call. AI agent API for cross-subnet price arbitrage, dTAO portfolio rebalancing. Informational research data — not investment advice. | Polygon | Market data | unknown | 2026-09-08 |
https://api.carbon-cashmere.de/v1/bittensor-derivatives/alpha-prices Latest alpha-token price per Bittensor subnet (TAO + USD). All 129 subnets in one call. AI agent API for cross-subnet price arbitrage, dTAO portfolio rebalancing. Informational research data — not investment advice. | Arbitrum | Market data | unknown | 2026-09-08 |
https://api.carbon-cashmere.de/v1/bittensor-derivatives/alpha-prices Latest alpha-token price per Bittensor subnet (TAO + USD). All 129 subnets in one call. AI agent API for cross-subnet price arbitrage, dTAO portfolio rebalancing. Informational research data — not investment advice. | World Chain | Market data | unknown | 2026-09-08 |
https://api.carbon-cashmere.de/v1/bittensor-derivatives/network-fundamentals Latest TAO network-wide fundamentals: total issuance, total stake, free float, supply percentage mined, stake ratio. Snapshot every 10 min. | World Chain | Market data | unknown | 2026-09-30 |
https://api.carbon-cashmere.de/v1/bittensor-derivatives/network-fundamentals Latest TAO network-wide fundamentals: total issuance, total stake, free float, supply percentage mined, stake ratio. Snapshot every 10 min. | Polygon | Market data | unknown | 2026-09-30 |
https://api.carbon-cashmere.de/v1/bittensor-derivatives/network-fundamentals Latest TAO network-wide fundamentals: total issuance, total stake, free float, supply percentage mined, stake ratio. Snapshot every 10 min. | Arbitrum | Market data | unknown | 2026-09-30 |
https://api.carbon-cashmere.de/v1/bittensor-derivatives/registration-cost-history Hourly Bittensor subnet registration activity (NeuronRegistered event count per subnet) + current burn-cost per subnet. Useful for predicting cheap-registration windows. | World Chain | Market data | unknown | 2026-09-08 |
https://api.carbon-cashmere.de/v1/bittensor-derivatives/registration-cost-history Hourly Bittensor subnet registration activity (NeuronRegistered event count per subnet) + current burn-cost per subnet. Useful for predicting cheap-registration windows. | Arbitrum | Market data | unknown | 2026-09-08 |
https://api.carbon-cashmere.de/v1/bittensor-derivatives/registration-cost-history Hourly Bittensor subnet registration activity (NeuronRegistered event count per subnet) + current burn-cost per subnet. Useful for predicting cheap-registration windows. | Polygon | Market data | unknown | 2026-09-08 |
https://api.carbon-cashmere.de/v1/bittensor-derivatives/subnet/:netuid/emission-trend Hourly emission and stake trend for a Bittensor subnet (window: 1h/24h/7d/30d). Derived from bittensor_metagraph snapshots. AI agent API for subnet-momentum tracking. Informational research data — not investment advice. | Polygon | Web data | unknown | 2026-09-08 |
https://api.carbon-cashmere.de/v1/bittensor-derivatives/subnet/:netuid/emission-trend Hourly emission and stake trend for a Bittensor subnet (window: 1h/24h/7d/30d). Derived from bittensor_metagraph snapshots. AI agent API for subnet-momentum tracking. Informational research data — not investment advice. | Arbitrum | Web data | unknown | 2026-09-08 |
https://api.carbon-cashmere.de/v1/bittensor-derivatives/subnet/:netuid/emission-trend Hourly emission and stake trend for a Bittensor subnet (window: 1h/24h/7d/30d). Derived from bittensor_metagraph snapshots. AI agent API for subnet-momentum tracking. Informational research data — not investment advice. | World Chain | Web data | unknown | 2026-09-08 |
https://api.carbon-cashmere.de/v1/bittensor-derivatives/subnet/:netuid/metagraph Full metagraph snapshot for 13 tracked Bittensor subnets [1,3,4,13,15,18,26,56,62,64,91,120,123]: summary stats + all neurons with stake/incentive/dividends/emission/trust/validator_permit. | Polygon | Onchain data | unknown | 2026-09-11 |
https://api.carbon-cashmere.de/v1/bittensor-derivatives/subnet/:netuid/metagraph Full metagraph snapshot for 13 tracked Bittensor subnets [1,3,4,13,15,18,26,56,62,64,91,120,123]: summary stats + all neurons with stake/incentive/dividends/emission/trust/validator_permit. | World Chain | Onchain data | unknown | 2026-09-11 |
https://api.carbon-cashmere.de/v1/bittensor-derivatives/subnet/:netuid/metagraph Full metagraph snapshot for 13 tracked Bittensor subnets [1,3,4,13,15,18,26,56,62,64,91,120,123]: summary stats + all neurons with stake/incentive/dividends/emission/trust/validator_permit. | Arbitrum | Onchain data | unknown | 2026-09-11 |
https://api.carbon-cashmere.de/v1/btc-derivatives/blocks-range Bulk Bitcoin block extract (max 144 blocks per call = $1.44 cap). Returns array of per-block summaries (height, time, miner pool, tx count, witness/taproot/ordinals/op_return stats, total output, coinbase reward). | Polygon | Market data | unknown | 2026-09-10 |
https://api.carbon-cashmere.de/v1/btc-derivatives/blocks-range Bulk Bitcoin block extract (max 144 blocks per call = $1.44 cap). Returns array of per-block summaries (height, time, miner pool, tx count, witness/taproot/ordinals/op_return stats, total output, coinbase reward). | Arbitrum | Market data | unknown | 2026-09-10 |
https://api.carbon-cashmere.de/v1/btc-derivatives/blocks-range Bulk Bitcoin block extract (max 144 blocks per call = $1.44 cap). Returns array of per-block summaries (height, time, miner pool, tx count, witness/taproot/ordinals/op_return stats, total output, coinbase reward). | World Chain | Market data | unknown | 2026-09-10 |
https://api.carbon-cashmere.de/v1/btc-derivatives/blocks/:height Deep per-block Bitcoin extract. Returns miner-pool attribution, witness/taproot adoption %, Ordinals inscription count, OP_RETURN byte volume, fee percentiles (10/25/50/75/90), UTXO delta, segwit %, total output BTC, bl… | Polygon | Market data | unknown | 2026-09-09 |
https://api.carbon-cashmere.de/v1/btc-derivatives/blocks/:height Deep per-block Bitcoin extract. Returns miner-pool attribution, witness/taproot adoption %, Ordinals inscription count, OP_RETURN byte volume, fee percentiles (10/25/50/75/90), UTXO delta, segwit %, total output BTC, bl… | World Chain | Market data | unknown | 2026-09-09 |
https://api.carbon-cashmere.de/v1/btc-derivatives/blocks/:height Deep per-block Bitcoin extract. Returns miner-pool attribution, witness/taproot adoption %, Ordinals inscription count, OP_RETURN byte volume, fee percentiles (10/25/50/75/90), UTXO delta, segwit %, total output BTC, bl… | Arbitrum | Market data | unknown | 2026-09-09 |
https://api.carbon-cashmere.de/v1/btc-derivatives/coinbase-messages Curated Bitcoin coinbase scriptSig messages (printable ASCII only). Pool tags, BIP-comment campaigns, political statements. Window up to 7d. | Arbitrum | Onchain data | unknown | 2026-10-04 |
https://api.carbon-cashmere.de/v1/btc-derivatives/coinbase-messages Curated Bitcoin coinbase scriptSig messages (printable ASCII only). Pool tags, BIP-comment campaigns, political statements. Window up to 7d. | World Chain | Onchain data | unknown | 2026-10-04 |
Descriptions are the seller’s own words from the catalogue and are not checked by us. A listed price is a registration, not an observed charge.
Data CC-BY-4.0, attribution: data by satohub.ai. Collector run 2026-10-05. Appearing here is not an endorsement. Check an endpoint with the doctor.