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api.carbon-cashmere.de

Curated Bitcoin coinbase scriptSig messages (printable ASCII only). Pool tags, BIP-comment campaigns, political statements. Window up to 7d.

Visit api.carbon-cashmere.de

Host	api.carbon-cashmere.de
Price	$0.02–$0.05 per call
Network	Base
Paid endpoints listed	39
Calls, last 30 days*	86
Most unique payers on one endpoint (30 days)*	3
Last paid call*	2026-10-17

* From the public x402 Bazaar index (snapshot 2026-10-18T04:07Z); reported by the facilitator, not measured by us.

Endpoints

URL	Method	Price
`https://api.carbon-cashmere.de/v1/btc-derivatives/coinbase-messages` Curated Bitcoin coinbase scriptSig messages (printable ASCII only). Pool tags, BIP-comment campaigns, political…	GET	$0.02
`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…	GET	$0.02
`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.…	GET	$0.02
`https://api.carbon-cashmere.de/v1/btc-derivatives/blocks-range` Bulk Bitcoin block extract (max 144 blocks per call, flat price per call). Returns array of per-block summaries…	GET	$0.02
`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.…	GET	$0.02
`https://api.carbon-cashmere.de/v1/kaspa-derivatives/mining-economics` Kaspa mining economics from public Kaspa node snapshots (api.kaspa.org): KAS + USD revenue per TH/s/day, block subsidy…	GET	$0.05
`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…	GET	$0.02
`https://api.carbon-cashmere.de/v1/bittensor-derivatives/subnets-all` Snapshot of all 129 Bittensor mainnet subnets — burn, neurons, owner, modality, alpha-price. For cross-subnet research…	GET	$0.05
`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…	GET	$0.05
`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…	GET	$0.05
`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…	GET	$0.05
`https://api.carbon-cashmere.de/v1/kaspa-derivatives/chain-density` Kaspa chain-blocks (selected-parent chain) vs total DAG blocks per hour — measures BlockDAG branching activity. Chain…	GET	$0.05
`https://api.carbon-cashmere.de/v1/btc-derivatives/whale-stream` Bitcoin whale transaction feed (>10 BTC default) with fee-rate, RBF flag, ancestor-count enrichment. ⚠️ output_btc…	GET	$0.05
`https://api.carbon-cashmere.de/v1/kaspa-derivatives/chain-color` Kaspa blue/red block density (GHOSTDAG): merged (red) vs selected-chain (blue) block share — DAG-stress / orphan-rate…	GET	$0.05
`https://api.carbon-cashmere.de/v1/kaspa-derivatives/network-hashrate` Kaspa network hashrate (H/s) + difficulty trend from 5-minute snapshots of the public Kaspa node REST observer…	GET	$0.05
`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.…	GET	$0.05
`https://api.carbon-cashmere.de/v1/btc-derivatives/mining-economics` Bitcoin mining economics from our own full node: hashprice (sats + USD per TH/s/day), subsidy plus measured 24h fee…	GET	$0.05
`https://api.carbon-cashmere.de/v1/kaspa-derivatives/timeseries` Historical Kaspa network metrics as server-side aggregated timeseries (max 1000 points): hashrate, difficulty, DAG…	GET	$0.05
`https://api.carbon-cashmere.de/v1/kaspa-derivatives/toccata-status` Kaspa Toccata hardfork tracker: live activation distance, network-measured ETA, post-fork parameter reference.…	GET	$0.05
`https://api.carbon-cashmere.de/v1/subtensor-derivatives/registration-pulse` Bittensor NeuronRegistered count per hour. Tracks new neurons joining subnets — useful for detecting subnet…	GET	$0.03
`https://api.carbon-cashmere.de/v1/subtensor-derivatives/event-stream` Filtered Bittensor substrate event stream from finalized blocks. Module/event filters supported. Captures events that…	GET	$0.03
`https://api.carbon-cashmere.de/v1/kaspa-derivatives/supply-trend` Kaspa circulating supply over time + emission rate + percent-mined. Captures accelerating geometric halving schedule.…	GET	$0.03
`https://api.carbon-cashmere.de/v1/btc-derivatives/coin-days-destroyed` Hourly Bitcoin Coin Days Destroyed proxy (consolidation_ratio × fee_weight × volume) + whale-tx contribution. ⚠️ PROXY…	GET	$0.03
`https://api.carbon-cashmere.de/v1/btc-derivatives/miner-attribution` Bitcoin mining-pool hashrate share derived from coinbase scriptSig parsing. Returns block-count + share % per pool for…	GET	$0.03
`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…	GET	$0.03

Source: x402 Bazaar discovery API (Coinbase CDP) · Licence: Public discovery metadata; descriptions by each provider. Listed in x402 pay-per-call APIs. We list tools; we do not test, rate or endorse them.

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