Back in the City
type: MusicGroup
genre: french pop
description: "Back in the City" is a song by Spanish singer Alejandro Sanz and American singer Nicky Jam, from Sanz's twelfth studio album #ElDisco. The song was released by Universal Music Spain as the album's se
popularity: 2
followers: 319
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x7ddb541a2cba68768aee5fb9098447731c99e019882a15a14a31d86d18261d39
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953871
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953871
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/07543b04-ed50-4ead-b16a-ab2a24b34817.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/07543b04-ed50-4ead-b16a-ab2a24b34817.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/07543b04-ed50-4ead-b16a-ab2a24b34817
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T01:46:03Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x7ddb541a2cba68768aee5fb9098447731c99e019882a15a14a31d86d18261d39","name":"Back in the City","registered_at":"2026-06-15T16:08:23Z","symbol":"NIM0760849","token_address":"0xa9845f5ccade933c538a465faa400ba280e947f5","type":"artist","uuid":"07543b04-ed50-4ead-b16a-ab2a24b34817"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ddb541a2cba68768aee5fb9098447731c99e019882a15a14a31d86d18261d39. Chain 2 (Bitcoin): anchored in block 953871 (2026-06-16T01:46:03Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/07543b04-ed50-4ead-b16a-ab2a24b34817.json and https://artists.proofprofile.net/proofs/artist/07543b04-ed50-4ead-b16a-ab2a24b34817.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T01:46:03Z
  text: {"copyright_id":"0x7ddb541a2cba68768aee5fb9098447731c99e019882a15a14a31d86d18261d39","name":"Back in the City","registered_at":"2026-06-15T16:08:23Z","symbol":"NIM0760849","token_address":"0xa9845f5ccade933c538a465faa400ba280e947f5","type":"artist","uuid":"07543b04-ed50-4ead-b16a-ab2a24b34817"}
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