Ayşe Sibel Tüzün (born 29 September 1971) is a Turkish singer, songwriter and composer. Life and career Sibel began her musical education at the TRT Istanbul Children's Choir. During her secondary
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 0xf74251e5ea3ee49f073d38d749e4d6d62032829ea0807314f2195cc7500c606d. 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/0911ba27-6d37-4576-af9e-43c55f43a895.json and https://artists.proofprofile.net/proofs/artist/0911ba27-6d37-4576-af9e-43c55f43a895.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 0xf6ca8cd3c738f99969fd7f3ac136e0f9bf10fd31ec4647bc7016b5320edc4a7c. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/TR8571002128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a509f82e3c37221a7d851f64eff811632a0e7c17993ace4fd712cc76dc2ed83. Chain 2 (Bitcoin): anchored in block 957632 (2026-07-12T00:10:15Z), 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/TR8571002119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb432c6c7ad4aa14ac8dacb3f3dfd3e08765b6ca6f4c05fa7ba061de4e5211b41. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TR0481500070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3abe8a4b094e5eba0b2f34b094117138dd51bda9a79249ae87a51dcf5809420a. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TR0481500071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dd8622ee3310e108c9e87a3b1738aa443cf4624a8a0e0d18147d250360fe275. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/TR0481500083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb63602a7192bef67469c29fbb63be6c2cda302799cc60b0f6475e2f9d3e3f304. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/TR0481400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dcf6c5a133b70e2a61e746535505cbac9800ffabcd821767f409cfc9b0188af. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/TR2611000878.
Bülent Ortaçgil için Söylenmiş Bülent Ortaçgil Şarkıları, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x164c3f97e6c7d97982c94f111b50bdfb16544ee9b536597d192eea77f24a8657. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/TR0280602135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ab080bdaec0d5d07ebee37886262a217630f83814d73a3ed9e13283aed964c1. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TR0531303883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ab080bdaec0d5d07ebee37886262a217630f83814d73a3ed9e13283aed964c1. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TR0531303883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f4e4644412fed3f977d56cf6c8f2cb091edbc42f76358f50c7256d0ae44bea6. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TR2610800402.
Çılgın Dersane Kampta (Orijinal Film Müzikleri)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aebf4dc68e6b34f90e1d7a0e8a252d14f9b53714dfd09e1db4aca01a7cdf1a9. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/TR2220800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06b3da6c2cd7b39b2763473310781698209e7aa674c6298dec7adb0e9c1994a4. Chain 2 (Bitcoin): anchored in block 960330 (2026-07-31T00:58:21Z), 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/TR8571002117.