Lehakat Pikud Tzafon, also known as Lehakat Pikud HaTzafon () is the musical military ensemble of the Northern Command of the Israel Defense Forces. Formed in 1954, the Northern Command was the last o
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 0xcf6872690f5b3564438397bed3831fd028488ac51c8ceb88956f55e669531bdb. 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/85788866-62b7-44c4-9c1e-b5cf553d507d.json and https://artists.proofprofile.net/proofs/artist/85788866-62b7-44c4-9c1e-b5cf553d507d.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 0x7770f06dfe0eb884a8629f93ee57c9c1fc6d646f214d0ff9d78b4902b96c0497. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/IL1000002490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7beb3dbea3d6f0e4225cc2f18cc89bcb11eaeb8035d15cd5a222b2b4543442af. 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/IL1001086176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9ae146e68f96e6d0e862b121fa5955785f38656a919e5c1c84be064a9ad87e8. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T16:58:47Z), 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/IL1000002506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc07de8ff976eac182b8a90ff5199cec7bad9911ff0714da0de8565cd823ba4d9. 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/FR2X41734728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8bf4d6cedcc4435ee8eb5ae15e39f12fa6696a303bdbbe0b75aace3eab4aaee. 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/IL1000002475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8291172464b4fdf1cc36460664644cef5504456e0622c20e9d9547e5961c50cd. 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/IL1000002476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e3194ff15e7ebdce9dcb2b1b7547398e3f5b61de859388a4b25a20700549f48. Chain 2 (Bitcoin): anchored in block 959091 (2026-07-22T02:33:54Z), 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/IL1000002484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa36cbc81d75d7ff6202ef656a6f1667790da71e24bf8fabad046e1c195e8fde8. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-21T22:00:50Z), 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/IL1001086620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd825ea379d8f8566ad6b09232fc294535025962b99f7f1a7727d04c3d5916c13. 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/IL7192400901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9fc9c8b868ee7eed8d82caf9afe8e3dfd6603e0dc7ae0e7e519ee2f70fd56a0. 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/IL7192401657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacfb4a8171f93c77b001765d439c5ba6be0a7b265c99017f8aa7f24509d30b32. 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/IL1010005010.
ארבע אחרי הצהריים ג': מיטב השירים מתכנית הרדיו
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8efda835074141f32e5edb64760c70769ccbb41603992585a74843c52cc78b4c. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/IL1000003515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dd0e54a0a8e942e0b8d23e7a7a290dd6f1be6ea888879ad0fe38f7c65c66fb0. 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/IL1010004490.
ארבע אחרי הצהריים ד': מיטב השירים מתכנית הרדיו
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8207abe23fdb97f41f7ea02cdad10bffd365407498696d339048131a16ce72a5. Chain 2 (Bitcoin): anchored in block 958041 (2026-07-14T18:13:17Z), 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/IL1010005255.