Zehra Bilir (March 26, 1913, in Arapgir, Ottoman Empire – June 28, 2007, in Istanbul, Turkey) was a renowned Turkish folk singer of Armenian descent. She was known as the Edith Piaf of Turkey. Life
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31ad62dd427f905f41c24976ed4d0abc7b0629c5a5ede7d1d306fa3086722200. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/af7dff09-cf15-4b56-8ad7-50f9e9d002f1.json and https://artists.proofprofile.net/proofs/artist/af7dff09-cf15-4b56-8ad7-50f9e9d002f1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Karanfil Ocak Ocak (Taş Plaktan Günümüze)
Music Of The Balkans, Vol. 2 - Bulgaria, Turkey (1930 - 1945)
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x739af7fad94ddc86c95e4a80b2dbee64f610926f48e0136cc6a288199c4ac984. 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/USA370531556.
Taş Plak Serisi, Vol. 4 (Türk Halk Müziği)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8107487283f05b78f2f96fa38fb9327ecdf679252d589fd8a52ec29e3b1c959. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/TRAJY1511074.
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
Ala Turca (1925-1955 Turkish Songs Recordings)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68dcf3cd0b32c32c1f31ac3a3157fca15fcc2985806d03b45c7f2e66d55d090c. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/US6R21394685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6125a529ffeffac9c9dcdc8a2678dc629b126f6bf80629323dcb51b4142a1e79. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/USA370531564.