Hasan Mutlucan (born 1 March 1926 – 28 December 2011) was a Turkish folk music (türkü) singer. Life and career Mutlucan was born on 1 March 1926 in İzmir. His father died when he was six. In Istanb
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 0x852803f15c3d6e4053ebb9bd0089790366901f78300e83cae5c3eb304095f41c. 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/d507fcbe-d5dc-4297-bcd1-daad1f246a38.json and https://artists.proofprofile.net/proofs/artist/d507fcbe-d5dc-4297-bcd1-daad1f246a38.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 0xfe10b08246509613723c7e11131dd13dd87ef9cad18b73e1133940d6f2d2ad27. 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/TRAAA9300628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7a1caf2c2990805d3a8a4d08e36a62ab6b46f178a43fb63b6a3605e33062d03. 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/TRAAA9801594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46c91ff5a4b0f752f58136684535ce4e6c6963b508d04989e5d1fa28e6f3168e. 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/TRAAA9801595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ba816fe99cee781db554a24074807046b43c3a496963f23e91b28594065d762. 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/TRAAA9801597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x195560cd563758aaa8ac7dc2531b87bb655030fc3a5b9c69345ae36b6fee90e1. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/TRAAA9801598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43bf81b59ce75c9487295a7ce64872c52dd1f1e45889b86ab39cf8a28753a9eb. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/TRAAA9801599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2810a024adb5bc466eab24e3521085da4a7a7d418e7d1d52cdab0d7cff7c9ac4. Chain 2 (Bitcoin): anchored in block 957720 (2026-07-12T15:26:09Z), 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/TR0090500798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2839ffde27b50be940e750b0891090f0acc7e48345710029bd88ace3c9019a3f. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/TR0090500791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2592e57df65e7b2b4658b23d14c8ca92bbf4d72b92b08f3cfc1da8debb8e2fa7. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TR0090500795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5feb6f7192afef8a2281e27179494490a33f6317da0c88ab7f10031707d8db4e. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/TR0090500793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ccc2050ed31b48c21937d4b8f6b93d9ae8f374a99120d08b66f03caa33d6b61. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/TR0090500154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb20c9c7ab04d33744ff86c4864ab26457d90269964068bd9b7e7b28e0a66a889. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/TR0090500799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x623e0f365d19ede16d619ddf0698f217186e8243c1e706754390c27e6f790955. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/TR0090500794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7d0474dfd86cbf3cca157861e5c094ea7b86f5d897af7bcbf792e1446782e8c. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TRAJY1407479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfee47d54d3dd3a40543a860822cf529f81b9ed8f0fb39da4f082d547196e257d. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/TRAJY1407477.