Ardian Bujupi (; born 27 April 1991) is a Kosovan singer and songwriter. Born in Kosovo, he moved to Germany at a young age and he has been living there ever since. He gained recognition in German-sp
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x387c48c04197bf1ba9552fe2575ec22c5da8e50a2107ceab693c6bec3a8cd17b. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f88d747a-d6a2-4aca-b25d-4d8e54661daf.json and https://artists.proofprofile.net/proofs/artist/f88d747a-d6a2-4aca-b25d-4d8e54661daf.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d04c334541bc522a304a1102bcd7c25a48de9917f479a2e0ee79853a3c465ad. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEE862001510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27e08d90729595b924f5dffff56a66c2c94693fd96fce9a56193aef0b11a0d69. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZAKB2410923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b3aeb38e2818133bbe8ea4003ffeba91ac961459643f091d8599a7d3812497a. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/NLG661900636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01e823a83278617df1c5e70ea3d989950204bac44aeb7432e3ea95863147f0c5. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEE862400341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb517a59507ddfa3d07529a3f8454a637fbd57d650ec81db65f07528cc2382d2c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZAKB2409245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f4896cefa9d6fa3bbe12269d3e16a778b6f3d4d7969c1036ebf2c3f3c35a883. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEE861901642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09c49432a9d665ad36472c34fde9d7d2c04560ab2e861671361304f07e2d32ec. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEE862300933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x293016e9f12933118875dfbd88291f58ac966ea011265b9b4314dc7f468b9d71. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FIWMA2200316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9489eec0f5c54f978cb7a7bcc69e36f65dabf7e9b53a4e72aaaeeeebad6ccc93. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEE862400339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b1568df803927cf8aaa17ea6f2c3ddedf10b93d52fcd4e9366de87e45c5776a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEE862400337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeff553316d108428e94a1da4b94ca08b9d50a9131e69c70aa5cadef1edf5631. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEE862400338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cde0038dcca54a0df32eb556a9bf38a5e839b8d3515e8cd462133bf9d9ca230. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEE862400340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01e823a83278617df1c5e70ea3d989950204bac44aeb7432e3ea95863147f0c5. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEE862400341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c9133fbcd34142b5b652c2ead1465a715f915cf6d96797ea044f0c3907eedba. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEE862400342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf972242d433c8b3fb7df5b77264f564926d84fc8270d3496101cd0d19f29ee76. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEE862400065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ab1be6b2e5bceac1a4b2f1dd0db3c7e9717f328a66d72ce3ed6074f0035cab1. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEE862400343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x809d3c6715e73ce5c0333a4b52d894404ff8675a2e6c13151d9c3a0becf12574. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEE862400345.