Nitai Hershkovits (; born 21 February 1988) is a jazz pianist and composer. Biography Early life Hershkovits was born in Israel to Eva and Ilan Hershkovits. He started playing the clarinet at the
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 0x3ba4cf9e95efc92b02a15d8e9d6993e12572357e0dfe8e51558a54225a9f3f90. 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/c03785ac-beb1-4fb2-8b4e-076d57409f1e.json and https://artists.proofprofile.net/proofs/artist/c03785ac-beb1-4fb2-8b4e-076d57409f1e.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 0xf6ec80d0b7d90bab65a76f6f2146a9310f56c587452d046f6cb10db05cdbeb83. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/DEB332277901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfda348f12da655788830c0fb2e476bfcdcd63f078639f4f4b56c08324fcd986f. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/DEB332277902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fd01aa0f641da4ed6f02ea98eb238e80e7e218679cc03b0c4918b6ce211bc0a. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/DEB332277903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f98bc5a50d8936e71866de8c0c844eff3a362cbcb590c97f6365eb978f832dc. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/DEB332277904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe8ee8e279388df8eaffea496e291a2a100203c01fa893a55b8f7fe3e06388e4. 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/DEB332277905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x288adaa891e71095fda949b86ba7cdf91dfe4299c39fa8f4da3c3e38ac1b6c8f. Chain 2 (Bitcoin): anchored in block 959054 (2026-07-21T22:57:45Z), 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/DEB332277906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b536f7ff77bed4a9b393a11f346cc4c7183d106e0d4b05333f6c7c2c5a00b4c. 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/DEB332277908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5662f7ec1e179759589fd706df96076c3535806c98c7b9d4791efd247dbac8e. 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/DEB332277918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dfb0a76876718f9a515a09ecc03e7d12ad38d90730e1ee2b28bac41e4628127. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/IL6721700760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x219853a3d5d03b36e5a35356f7f7bce67d950cb1a0fed708645a1b41a3cf6483. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:53:03Z), 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/IL6721700769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ff67974e54654774882a575864e98f10560fcab155bd388c3eda59613dd73ff. 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/IL6721700771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8deb7c60bd4994ddd8ebd2c8b884fa3e7f5ffeafb6cb6559f11bdd97a366b4c. 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/IL6721700772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e814e82cb8024c6d506979c41f0d066afc749448d2dfa2de0b8234dc38fe7de. 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/DEB332173904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x027f13c825bf2b447e0171d3113d8333d804b99592b9dfe4ea6be5f27816a73b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBZG92300083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cdb00bb8196da785649bb5af4327137a0f01bca3b8c75379fbef24e9b78ad04. Chain 2 (Bitcoin): anchored in block 957025 (2026-07-21T23:20:40Z), 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/FRZ111200415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf65560cbc8e85cbd61c61e612d8d23015dda5f8d69543edbeaac9db34d38ec57. 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/FRZ111200417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9b4013b7342395f8d7ecad02f57f5725441ec838ed291c45ce3cd4b5ff13e95. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-21T23:06:40Z), 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/FRZ111200418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe58d58ff19a0de674f921cb5c76bde35038708fdd817351ef409e4ff73f5a31. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-22T05:28:39Z), 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/FRZ111200420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeb040c138078219a21373d966a90355c1fc502cf1bdea81ba313fba66058171. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FRZ111200424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f453e2fb25fd1045c2c957cac029a8bf64f87ef5ae95fa14ebdc4f4b29c91be. 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/US2W61161105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadc25703beb7378912c5d9c076b011fb05b550793ccf76829f52b9d21c1914ca. Chain 2 (Bitcoin): anchored in block 960191 (2026-07-30T01:51:26Z), 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/FRZ111200416.
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 0x5d68779d38e8a6004b54e6357856839da186a6cbd67474034f725afc41a4cd54. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/FRZ111200419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa47f415c27bbe7e9b3e6f87fea3f4f3816d0a334b17b1761c05f393c8c0b372f. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/FRZ111200421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dcd9dc7d31bea98f6000fc4cc3130d58b42783a83832c3332cfedbc595df47b. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/FRZ111200422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3753ca109a1af6c6dc4e3ee3ec96d5ec1bb4a9afc905348234d4a7f94dd2c10c. 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/US2W61161101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a501dc46fe0df694b6936a06f0213d0056c31741ac4f40733ecaaeb6a787957. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/US2W61161102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x181582477c97415cdb9f265442f460710d89fdae498fa9e8799ca0f125bc481c. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/US2W61161103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x512df921340301f93f2f87856078402a296bd7831dcf8824fd6c69b42abda3c8. 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/US2W61161104.