Ferhat Tuncel (born 16 May 1998), known professionally as Fero47, is a German rapper and songwriter of Kurdish origin. He became famous through posting musical videos on social media. In 2019, he sig
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 0xb6d74dac843992c50611cc86075ca1a9bf687ddb4bf2131509971bf86035889e. 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/dbd1e389-7a42-47ec-b2a3-f9aa3fda1129.json and https://artists.proofprofile.net/proofs/artist/dbd1e389-7a42-47ec-b2a3-f9aa3fda1129.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 0x3c1a70875ff320c469c9d433238b47954c041c2dc65b3f91f5a2af1819cf56b5. 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/DEKF21801922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x261ad4dd96decf89c30ab035b9d045455875ba77351eb61df445961ba0f632cb. 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/DEKF21801921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cdd93b01a77999d7191270caa33285a5f58ad1accc8f0cdcd0e3704fab7a755. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DEXW11900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe306d293445eb19154cde0d58838f8b6fa00e352b1cf1857c8408a7a2d9d998. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/DEXW11900020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4364acc86c73c7609bc9683233fcb5524e103827751de49c3975b17d989b191. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:48:09Z), 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/DEXW11900016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74b3a6ae13fdfd27d1eb6db86e6600962df49084780a240a7085163fc04ad578. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DEXW11900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33c8106f4dad1f640b25d4a7d6c5c552e5255e61781797274564cfb8c914ffa6. 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/DEXW11900010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed08671585a7799def670e93535b90875a5203cd6973e6d3007b843446195382. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DEXW12000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x010c59e67843c9fd625a6cf0f99a541ca2de268001eb6b9f43b0a89549b0888a. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/DEXW12000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb64718dda9bf7063b455da47f3f26edcf04518d5e438e84ef3730d6e9833d2d8. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:52:22Z), 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/DEXW12100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92ed9e8a4ee238e521db38dd1024e03396be01fd89901b7e0b5a131aaffff9ba. 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/DEXW12200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x373ca91c9052d0c242ae9690514e0c358b63086afb2b73f71f8f591b22d0547b. 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/FRX282424613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c2e6471b4b70f1e89b686706f2a39a358c0f60a636f20a4c5bc534b2e0a5597. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/DGA052484750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee141acaa482e1bd542af9a91e0f8fca0a2c14b6c86a8825db7d88c9e58e9e42. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DGA052484751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01bafd6986dc3a870740a03e83f7c64ce3a9a9c26750209ad5bb8dc90dd204ba. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DGA052484752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe107de47a7871beb35026bb0b95b45907479aba8090e1ae75042965dfa9dec63. 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/DEQ021903079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8cac2d2934162915bd7a5333cbee3df1a839263421353ec036d46ffe8d0b393. 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/CH7812182793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8cac2d2934162915bd7a5333cbee3df1a839263421353ec036d46ffe8d0b393. 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/CH7812182793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04a950de967478f42ca3f22968307505239490541d10bc7c8c0b2791baf87839. 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/DECE72104418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f6cd307093f191bebe6c16ebc6cccadf925e0029bdddbc96382fefbf888c5f2. 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/DEE862200603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a038f67fd175d39b15c88f6ce39a9355d38c10239b1b96e6a200fcfd29bb12e. 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/DEE861901632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a65da91841280b4efc6230dcc28a3d1463c54e4b3fc8ae2b270190df8862c6f. 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/DEQ022151314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a038f67fd175d39b15c88f6ce39a9355d38c10239b1b96e6a200fcfd29bb12e. 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/DEE861901632.