Savaş Yurderi (born 10 February 1975), known by his stage name Kool Savas, is a German rapper. Along with Taktlo$$, he formed the highly influential German rap duo Westberlin Maskulin (1997–2000). He
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 0x78d249125abf7285ba0567b351fe01d78c46e0082926d3f9dbc52361e91239dd. 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/32f395d0-426a-4568-beaa-bd7ecacce7a4.json and https://artists.proofprofile.net/proofs/artist/32f395d0-426a-4568-beaa-bd7ecacce7a4.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 0xec153f5ba105b43077ae858bd7835ded188e930c8ec71a23e1af591a7d4b8eb0. 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/DEA810500572.
Dann mit der Pumpgun 2.0 (feat. Azad & Kool Savas)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a199eb6ab3542071ecbc41a984e3ce6d672ba3c91d66af0869620fb60910561. 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/DECE72201764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92809c1c526835810b526429369925e0429575d7ba35f598dd088255c76199df. 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/DECE72300831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dec233a9aa74ef2fc7860760e0de21470015804b4d57975d9852f11b1fbcb53. 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/DECE72200251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc64eaf13a4213337c147eece7f616c89677a8fe6d010824ca88b537c711d2c9b. 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/DEVY21900020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4227ab63345cce99cb845ad2a5273612b8bf475f5ad27f5cf33523f77c2f6d97. 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/FRX282446603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x436056698394fbc2c16bd6dd3ed986e9bdaab6f0618a0dd8d07ecc31a7fd0957. 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/DER411405107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd724213938fc555dd0802d9587306f443c2b487044c90693d6f9016f3d23d0f7. 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/DEQZ32000649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb43e12436f3153a3c3efad93ea40fd89397e70c3164206853b8638b8a71564a. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/DEUV91600014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd67f8f55fd37715bad3c2b47a3edd467898173eebcd2820076c24711dbf82b23. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/DEPI82021644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2755ed496871a2965f4648fd178391a903a6417d0b0b7bff7c77dde231ea7efd. 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/CH9881800021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8610e96e7973caa2481da7f9f42012c59ef37dae898408f91358c73295946628. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/DEBN21100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfab50d1515759d2640a3c14cb25f22132c60c6a14fa6473908f74b0609d96dcd. 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/DEE861902818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfab50d1515759d2640a3c14cb25f22132c60c6a14fa6473908f74b0609d96dcd. 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/DEE861902818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x606f5cbc6beee1a69045628b1697da91b522057cbf15a51c61abe32a24e6080c. 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/FRX762367122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e10388266da30d9565d93d2d129bbe021a2d9f34f222c64d06db072a8e40bbb. 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/DEBN22200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bec3e5a2ea81370514adeabc946210be5b307660eb162d69a0dab9b91d797bc. 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/DEQ121752301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cb67a799b41aa2bce3a6d8e9a4ce94a8812298676e24fc411f2798567e36d13. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DEUM71801813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cb67a799b41aa2bce3a6d8e9a4ce94a8812298676e24fc411f2798567e36d13. 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/DEUM71801813.