Using the blockfrost API I quired the transaction history of a NFT using the following script:
from blockfrost import BlockFrostApi, ApiError, ApiUrls
api = BlockFrostApi(
project_id='my_secret_key',
base_url=ApiUrls.mainnet.value,
)
try:
health = api.health()
print(health)
assets = api.assets_policy(my_policy_id)
asset_history = api.asset_transactions(assets[13].asset, return_type='pandas')
print(asset_history)
except ApiError as e:
print(e)
Getting this response:
tx_hash tx_index block_height block_time
0 38ad1c10fce2ff3cc19a47002ea3f0e42257a56d051dc3... 2 6436806 1635591940
1 c379a46550f041e3dd25d534034beb71b04f15ce3f65b1... 7 6439385 1635644577
2 d92447f19d78cae77b57d727ee459e2665839990418233... 37 6439387 1635644654
3 1c6e774d35c6196d6236f0465ca162a5b873a846b2a5eb... 13 6439391 1635644697
4 5c1048c319fcfca8ba8f6992ae894be73c9244d78d9947... 18 6439398 1635644851
5 f71f698da38403c475565c109a143bda06fb87f718ec08... 34 6439401 1635644928
6 e15fb6c7fdc5ccc6ccef234f0645b510f150bf7b2e74b4... 18 6439533 1635647419
7 479995eea8a566384eec7b8933c55ef83db42b08779538... 2 6440258 1635663466
8 0548dab5b72458d0ea31b0e99f13c671d4634d27657e03... 0 6440355 1635665472
9 94141bcb58cdb5822b9fea7eab9b8868845d523f9f190d... 8 6441301 1635685169
10 738bed4f7bccfa426a403e35845bee96c0d3f41e83ea5e... 13 6441422 1635687392
11 4afb4df1d193ceb3bfe24d9de934252a176120888e0a96... 0 6442330 1635706804
12 4e847c23f326821b3565472045e36ea774f496df2f09a5... 70 6442428 1635708878
13 cb19e1da6665375c1b6b3ac1e0e31bb238b1f1c90000f3... 6 6444826 1635758501
14 6ec8b61254f82120c6120a24d41e50977abf613f5c66b7... 23 6445035 1635762659
15 5e644b9c77d6c565c925d15cfecfffd7a279eb9a2c713e... 31 6447594 1635814038
16 8db58815ee4ad5f37aaaddbd7d1ef8719477a87d24452d... 4 6447605 1635814237
17 11fd5b552be255831d82fdc513fff41c4809cf33e7c6b2... 12 6447776 1635818167
18 b05dd10d64764ae7b9aab93c3b1e7ddaa2a6c9c0680461... 26 6462608 1636121671
19 22a8c33a6fe35fd82cfd00544bda4345ea65318188a927... 25 6462612 1636121753
20 f9882f6aea766d9f5a3b503f168c84b635e9be0a349acd... 7 6462673 1636122903
21 0a6fa23b9081d938e986734071ab66c7032f6c50954428... 22 6462904 1636128077
22 8450c04442ba42432edc4d7d1c703e084e28e6ab3e9f8d... 4 6463391 1636138353
23 ade1f612f6d7adcb54c3a804cdb230f343b486f425f32c... 0 6468943 1636250015
24 13fb4e318ba12558819ede20ed37dc2bef7b9dae7cff61... 26 6469165 1636254523
25 3153d200935012eb695ffafd13ffe68c04c4f2fc179c9a... 4 6469171 1636254605
26 fb5e69b4ddb00f23cbe879c2087fe315178ac73fa07c56... 22 6469172 1636254670
27 9555c42315f15a88b29535ebffc05369ccc9b2fc092db8... 4 6482371 1636529118
28 09e430ad3ffde4f1e21fe33564f29a0fbb699213df67f8... 9 6483131 1636544549
29 8949eed31b7cede95c294f0bdec3d6b26ded6b14a18adb... 35 6485203 1636585696
30 50a06e0f0cc53e666d474798f5bc05bffcc1812fd23524... 31 6485216 1636585952
31 e0401628a403a699d91610439606f406d82c9fa4cf655f... 28 6485336 1636588252
32 89a311b10d004da25b3027d4795fc2e245a59a6be30c5e... 54 6485341 1636588391
33 e7b5c1b24ae39bf0f10000237bee03254ea0ac67399002... 16 6485394 1636589435
34 3a319385fe7a8373e3c0ac864727147ccb3edb409abac8... 8 6485404 1636589609
35 7f4a9bd753caae61e6e7e7147269ab6500832aab8d786c... 8 6485406 1636589642
36 1b0965031f3e137f9d787941230894ccf91d89d0beb6b9... 20 6485430 1636590112
37 f526d275da39c46783983aa326da5fe13379270ab12b01... 13 6485447 1636590324
38 cbe3b65fd19364fab8e69062d9075dfa9f6ff90e25f02b... 26 6488527 1636651538
My questions:
Does each line represent a transaction where the NFT was transferred from one address to another address? If not, why are there so many transactions?
What is the tx_index?
Is the block height simply the size of the new block added to the ledger? (in bytes?)
Where can I find a reference so that I can easily answer these questions myself and not have to create a StackOverflow post each time?
