Sevda Alizadeh (; born 1 September 1987), known professionally as Sevdaliza, is an Iranian-Dutch singer, songwriter, record producer, visual artist, and director. In 2015, she released two EPs, The Su
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 0xc55452aa91cb1430e728a257ef053c844d16a009ef305574a0c0e7ad681af19e. 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/ee3c033f-e28d-4d1e-89c8-6addb84bca83.json and https://artists.proofprofile.net/proofs/artist/ee3c033f-e28d-4d1e-89c8-6addb84bca83.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 0x37d2359390c3808027ce74da38098fc03d7dbb35cdcd9945494ce1208babe55e. 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/NL47E2400004.
Alibi Pt. 2 (with Anitta, Pabllo Vittar & Yseult)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfb10fd096d9a55a7703e22daa702cd5540a7bcc4d961138652c6fbd58ff3380. 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/NLE3U2400011.
Alibi Pt. 2 (with Anitta, Pabllo Vittar & Yseult) [Extended]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91fc08470b70e583309ded59a93d26ebf14a58168fd16a43877492824e0a1926. 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/NLE3U2400012.
Alibi Pt. 2 (with Anitta, Pabllo Vittar & Yseult) [Sped Up]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf456cdc68d05c46c0fc29aeba9e5201b80f1eb0d5ad25a0c881fd8c77e3423e2. 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/NLE3U2400013.
Alibi Pt. 2 (with Anitta, Pabllo Vittar & Yseult) [Slowed]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3314dfc5e5cec2c3e1b4c85ee9689e6f68d5c7c879a8cfa09ab56dcacc2afca6. 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/NLE3U2400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc3df66ce2c3fc13bd50cd483de53dd9ee4c1877b0f60b5600480cd4d6f609be. 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/USUG12303923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d20f25f83dd91741ed31df5da0b7b7b296ef6a857ff90a1105b4d665ae96972. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBMVH2300100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56fb7751cbf1e1419c73a193de9655b5fd8002ac47dd5a35524ef19ab1a8ac91. 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/FR0NT1900026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4fbf64d82f3b137cee539223beb297b3491fbc670f6bdd7d088889cffd588a2. 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/NLE3U2300003.
Ride Or Die, Pt. 2 (with Villano Antillano & Tokischa)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dc02bf89eb2b0152e2f5d5ff3aef76b89b400c1cef170a9d1474b954ae501cf. 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/NLE3U2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfce7f61edc4cc50b9b30eb34f6b0aa1af39a5b9c4a4c9df1d576edd6140ef933. 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/NLE3U2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17a68166b6aba974344d0abb6cbbdeea2e61719e57e5e15c4867b5e44338a679. 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/CA5KR2497138.
Nothing Lasts Forever (ASOT 1159) - KI/KI Remix
ASOT 1159 - A State of Trance Episode 1159 [Including Live at Ultra Beijing 2018 (Highlights)]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63b32a162947e37d11abce39c6221317f20a103c5cd3970c53cd41023823212a. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/NLF712400822.