Erez Lev Ari (; born August 16, 1970) is an Israeli singer-songwriter. His music often incorporates Jewish teachings and themes. Music career In 1996 Lev Ari joined the musical group When Nico Start
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 0x5ad42240175771469c30fbf71d3e1fa8cf9e684a11e9f5e85e198dd251d6f57b. 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/70a6dcc3-b2bb-4e39-81c9-6bb86282f9a4.json and https://artists.proofprofile.net/proofs/artist/70a6dcc3-b2bb-4e39-81c9-6bb86282f9a4.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfecd35a5af66204c63678c236684a7a4dd9baf3e10f5134bdd86dcc50a333e39. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/IL1010100562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x925cfd17302c20a0385b88b5e90fcc595c221cc7c19c14ba16b89f596459f548. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T06:50:39Z), 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/IL1010004920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9783cac793899bdea158c98b525414197322d9718c03dc4dcd98530a07b34f9. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/IL1010002552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcc1d86fa195aa49cd469188d46334aede05b545ebde63e3f857a3dd7b260ec4. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/IL1010993793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bc5e4c7e3c0cba1f53465ec2428ef052bbe8c3e8895ff4818765494cb058542. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/IL1011120666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99560946bd6015021f946b715d9482c2b5e968992b372c3f3c5c269781936b99. 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/IL1011120667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x905d37b170449cf2a0780bafb6f957cdfa089356723fbb3fbee01e51cc69f5ca. 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/IL1011120668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3de02f733fa97e90b9349c68e34edad7905f776df941d440d8b259b0e6e63e5. 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/IL1011120669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x324febac63146629b62f87ab210096c33d760edfab393229d5fd51b4a5f6470f. 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/IL1011120671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d920ab2f00e976ec74b5db4cc012f813d14f929d003fd70c411e954ae5d9eb6. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/IL1011120672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe351eb765fcbd6faf7658e10de05c468ae4867e5a126c6f8cf819151eb67864. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:25:44Z), 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/IL1011121295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d0f6e46dd81e750f1caf5accd40c5d4a5dd40c7caeda13cb2383f6df8238e05. Chain 2 (Bitcoin): anchored in block 957540 (2026-07-11T08:19:50Z), 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/IL1011121401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1543d97c8eabea1749b13b840f1b0b39c36f661294767ce3074af190e21db2ce. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/IL6431800434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d1b1cb3e6797614a8a9644a0d45cf9c14f2d976e2e779c0649e7165826cc068. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/IL6431800457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb947346a73746daa1925e109d59ca14c1369d3d4bd0561300949da43974738b8. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/IL6431800479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffde2a8a6529a244b447e45ae23b845f729c36996a2ed41d47f2ee0715292846. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/IL5842236637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14157ad7e7479e6da13b5b796334ca7244326824d286e332152e0b10090ab982. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/IL5842341415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57ab2b51e2932748d918c5625e133828a86247fbec97d5fceffcbfd15bdb300a. 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/IL5842341418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc77609228db5d5e5fe07930df5b4af8b82421d07706c079c89884f4df110d82d. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/IL6432200746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a468fc194e2642d8667a5d71335cb57c8dba5e7f634f2df1a071721814347b3. 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/IL2952308001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x412b87a37632b4e860b98065cfae3a48e21248b76552c1b354d371cefece8567. 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/IL1012000446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67dcbdf3552475fbbc5401b10fc54486f5e3ea667c9ee15876292c042342c715. 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/FR2X41985994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23fc760dcc1cb7a7fb89c29936c26727363bc43b9c7818f250e1065458a02712. 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/IL1010004069.
צמאה 1 - אמנים שרים את ניגוני הרבי מלובביץ׳
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aa60a3585b3c0fb6ce7edebeaa476f5e7c3da77c9f62bf6ff00c28f8ca0de0f. 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/IL1011126870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6d9baf6fb3b42fcf9fb0d74959a30815362e029d4334e2e103b42347246b409. 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/IL1011122813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb93487d6181e8ed0a73a591738276e53d9f0b970f4ec2ca7b5054620a4efde6. 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/IL1011121656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x445907bf1a7d20c0520fee5a4fd667d0891295c553c7e4af9e0ae580dc74a937. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/IL1042306401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x993f77fcb318054350920247dd59238c11a98374b417b37ca368e3fdb623f987. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/IL2DY2400108.
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