Ariel Horowitz (; born 10 January 1970) is an Israeli singer-songwriter, and the son of the late Naomi Shemer, widely regarded as one of Israel's most important songwriters. He is married to the Israe
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 0x97db7ad6d5a53de3dafdc4f3f3a4b6000f4b30ed48a3c5c3ae5f0e9a057057bc. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/32ce34d6-dcb4-46e3-ae5a-23bfe6fa44dd.json and https://artists.proofprofile.net/proofs/artist/32ce34d6-dcb4-46e3-ae5a-23bfe6fa44dd.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 0x07909d0e5f8a50516631d0e8479f9ca545ae19e993d4dd5a4009a59940c100eb. 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/IL4071400270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb26621eccf5d57ce944aef5aabe5483bb003d23fa9a212d2af50e7c540423c3c. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/IL4071400261.
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 0xb36783ce525f7f3445654aafeeddf8859a6d6d645018b37f10551961156747cc. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/IL4071400262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35c63ba586fc71014fd3a8f8efce576c89b110441b127746f2a418b71729eb3e. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/IL4071400260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ebbdaca7d5267e9a8c538acf45629150780dc061dc646c9bac904b2d38c7c60. 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/IL4071400265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x473a281a2b34ab06a5654a061107f4c4d239ba906283dd89405e2c4711fe339b. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/IL4071400268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe69a0f9dffea7dbe2cb62324df7a9bd458dac0f6941867ce21604088411e3c46. 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/IL4070900141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06a6fa1698ea972c240cefb88feb9ba932be2d98e5527e5ee6f65ff8ec6eec8d. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/IL4070900144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4faaac48ee8091295f40143427c64bd5ef6a5d3b9554b4869207b20916c1cb61. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/IL4070900146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f67670ffea7752db561266979c3dea9e5779701fb0727350115a948c8cb15aa. 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/IL4070900147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dc2cdc01dd3de3961b3a5997de7fe8db9f6841169d9bc3cdaa102b27af6f63a. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/IL4070900152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafa52308e360bae0cd2940ec9e3781e84fa20bb04f9cfdeb805c03aae9004576. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/IL4070900060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x926305246eec084e87862ec3cf5cb33a0e38ba53380e3cbcf149c0592ee46e2c. 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/IL4070900143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06380fde1c9c3e16f10ffddef0c41f6fb7f63c35ba2b1f9fbe5f77f2439d898c. 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/IL4070900145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7d03063c0d59df48882ebc69758f873ac0aab40d9c1c2b82b25a1c6e64372bf. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/IL4070900149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87a9857dea0c456339a348729f168a978e677486e79a36fd501ced80161d53a3. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/IL4070900105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb8f36847b6e24f1f235961232204ad90e5197ea26ce35ff9c60e8b245c1e529. Chain 2 (Bitcoin): anchored in block 957246 (2026-07-09T01:49:50Z), 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/IL4631000208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x973bfb2772295a2748967b913ecf739b14fac3b1fdd66846e6ba6ef64d2683e2. 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/IL4631000218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x716ddb83f54704826427b8d6ba2e7f6527bb9c147112c1f0b429e864a050c8ad. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/IL4631000210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x067a4976eeb4c54bab034c8f60d1bfb5174dbe9828b00aa7f017ccc9c2395fd6. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/IL4631000213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18f6cda9a416b0fd12ea63ee4eedd5e0dba68f9b618e00440a164754018a7035. 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/IL1020412542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb53342a21126a033bf0e66d171479dc2e38de73c4df846a8bd9244cf3fbc5e3d. 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/IL1020200708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb50fbe20cac9aaa303888331b40e2ad3d667cdaf87bf22c5230513ad0dbdd308. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/IL1020200702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca956f7ad834ce7d57f00adb53777af75b08d417de68f9d259e7498f2967d55a. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/IL1020200700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eea8789cb5533bb7a8fc53df5d566e06ab53dab7c98ec61f359a3bd0205b3f0. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/IL1020200692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fcd74f8557ea519e609ad1e6b15c63a424a1e79291c03fc7a2e52de6d93bcb1. 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/IL1020200690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd939cd96db8fcb2bd6a900a6441d64d7ec077bd68e9bf8ca16ac1abddea4095. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/IL1020200705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf58925a7c0c6af8bd16b24ea53fe61b6883ae138fac9cdd3483265a38321f68e. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/IL1029800706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07743e4552dc114d4752ef6238b01187f45710377cdf5b7565fae34a5f709d99. 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/IL1029800701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dabe8ded0553d2dd5162f63334432cbbc86e38a6a9163a70acfb063965be2f5. 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/IL1029800699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee46c74540678523d0bbd44c19fcded32904708831781df871a4f4ae3463fe69. 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/IL1029800697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf07eb5c9cc1d90cc4216e60d84b16f67638be2a46d17a53c91ac7a341c561764. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/IL1029800691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c6d627a38e7f94ae873792c58e5c9a2e84002c46f1e2111b78f8142eb30fc47. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/IL1029800689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e994196b4a57f8e5719413e5cce0a45b097b10dfe083ea5c1f533e2fca2128c. 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/IL1029800696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb191e70e4d87bf39cacd2f7750cd08714a5390d7064c47498177fed9c63e37b0. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:47:40Z), 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/IL1029800694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeda49bcccfb19aa1b18b524a528cfb0b738dbd8b4a7b60cfe7aa6be363df80d5. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/IL1029800710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x047073c065763acc2718def18036c92a29207b9cd3896f3c762d930ab6b9e9e7. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/IL1029800709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9953e9e3667465746da869148d13a7210fa452ad37a689727faaa9e585b76444. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/IL7532313724.
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.