Luft or Lufft is a surname. Notable people with the surname include: Arthur Luft (died 2009), Manx judge and politician Cara Luft, Canadian singer-songwriter Christa Luft (born 1938), German econo
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41a3abcb0d4f83278b042f24f1c4eecc60ec07ed292ce2b8722018adb131a036. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d3a6a449-9f6e-4970-9e7e-da57e13402ef.json and https://artists.proofprofile.net/proofs/artist/d3a6a449-9f6e-4970-9e7e-da57e13402ef.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a45817d937a9e3e9ff55a8bb7bd89c6968d59c0ea6451bd47c85e727941902e. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMDA62318076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x217da41c5f712dc3f3f6b7c8b8d9df3c701d1e828036778835e56fea43e006d5. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:47:18Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMFME2357609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66fb9c78155ac60c5774bb5c60afb5d381a2f9e703908e9d74b75c32dbf7c172. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMFMG2332491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf045c16ed38391d0b473acc7500317c5404625111970fac1fd8bd2c25c20b010. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM4TW2489164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4012dc2cd15b3cff91493739973865a7802160e54db87fc658571ce73e68853b. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM6N22469307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x962bbb272433d01ffc4346c1cc6c9e3bec8c76f341f5d39115791a623bc250b2. Chain 2 (Bitcoin): anchored in block 957661 (2026-07-12T05:37:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMDA62481377.