Hanna Dresner-Tzakh (; born 17 September 1947), known by her stage name Ilanit (, ), is an Israeli singer. She was one of Israel's most popular singers from the late 1960s to the 1980s, both as a solo
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 0x43aa2d2e6046a68cc002cd7d691563820da4c622320b9e120f04372a57d1dbe4. 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/5091a5d5-2316-4cd6-8ceb-9fc0f6da7a97.json and https://artists.proofprofile.net/proofs/artist/5091a5d5-2316-4cd6-8ceb-9fc0f6da7a97.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 0x076f36257888120c59e55c0a0b7d151d004372dd32e1cd348fad69418f1b865f. 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/IL7192300913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf020b6ab33e68080a5c79336ac938e754bc2899df89c6e555536eaa4847c4bb. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/IL7192300911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8f7711693df436ba0895a779078c66cda5711993bf77a0bde3090ecf2a14013. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/IL7192302509.
Chagey Tishrey (Rosh Hashana, Sukkot, SimcHat Torah)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73c07ecfd8beb46e2c74d17976fa39476031747c7505380b61d19f7a62bd663b. 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/IL1058390001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf56d0934edcb710765d02e8dc6a94fa861f813890378cb40be1c46faac4ddea. 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/IL1011902488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2c02e8f7c9b2713f4b8a4d26bbd2de73ccee915b8d749cf95f9f1971cd53871. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/IL1059100093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf903fa2d0e4b87ef5caae6be8860b003f8ae9be3a9efd079ca5019b76df1e88d. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/IL7192500193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e3cb3cd02108563483793b07b73776901b9b70ae2db3087289e3f2a6ca68b2a. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/IL1010002916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b72b6f63a0f1bc1fedf115b89f5a0618819a92e7ba1aa191de2aade254171f2. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T07:27:09Z), 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/IL1011098684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36375450f9542ad6c2b963af44e7680482407cb146f9791d40d730d84d1cdafc. 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/IL7111900544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73c07ecfd8beb46e2c74d17976fa39476031747c7505380b61d19f7a62bd663b. 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/IL1058390001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1c0c416ab9918c67be89ad68dda46ffdd9a431611a8de1e6bc040517d603cfb. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/IL1011800199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ff8f46b88c1fba0b527b7f8dc95ccffe9438044099660d7f68bb18704f0a2d3. 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/IL7192302514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93ebc01babb5123f162909409d3d35550cbf7c8adea5610c3947ada2fd0f2fb2. 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/IL7192400775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x678d20dce0ff63ef8bbcac798d297c5454dd93b59b0edf7b6d284e6db1d5aba5. 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/IL1042005517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73c07ecfd8beb46e2c74d17976fa39476031747c7505380b61d19f7a62bd663b. 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/IL1058390001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73c07ecfd8beb46e2c74d17976fa39476031747c7505380b61d19f7a62bd663b. 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/IL1058390001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a1db964c9385e56d1be72dddadd9c4359e66b669cd5bcef8925642d803481ea. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/IL1031750322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x285f3ee9587459ee82ff0a17f020da6edf7e7ef8bc4dd9e60356d3d7f0376322. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/IL1031750318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08ecc831a2486f3dfa5a3855325796f5a8cd2ee3c049bd99d7daba55da68a80a. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/IL1058100036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaab577d2e6012067bd34cf9b5b135ca341f4bea747b917b5d637a53885da1900. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/IL1057200033.
ארבע אחרי הצהריים ב': מיטב השירים מתכנית הרדיו
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b95460cc1f62bb7136084dc0cb9fe2e4d145cf4e3134818679ef5e4cc16b577. 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/IL1010100461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bf012b9d8c052e06a6eb9d9dae1cedec4f2ed6ba8de32f2ddd014894a28c897. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/IL1010100457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1c0c416ab9918c67be89ad68dda46ffdd9a431611a8de1e6bc040517d603cfb. 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/IL1011800199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x654a9d54c567922623a7ddad732b0fc76e9f219ddd569680a730e0731171a957. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/IL1012000610.