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 0x5394e51532e32d3a09d160d6cd589347ce840dd75726c31ef60faaf4455cae1f. Chain 2 (Bitcoin): anchored in block 953777 (2026-06-15T11:52:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ced22e20-3898-4dff-8d90-9af3b810c1dd.json and https://artists.proofprofile.net/proofs/artist/ced22e20-3898-4dff-8d90-9af3b810c1dd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
ארבע אחרי הצהריים ג': מיטב השירים מתכנית הרדיו
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 0x8f4c8a4b29c1ead29dff121ceda48b24d7d5d665ac01771df7b4af3b637f9e27. 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/IL1001086675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf558c575d5d734a52033e974b9fd32a8aa097e14c97c73066b77ca6701cae31. 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/IL1001086673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01fb537bee64d3a84478a08c4b0bb2de6ca486f43855f69af6dc009f845f4f35. 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/IL1010002838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0478217ba437603b4c8c216e4317ca31484465b21f1fe1d692fca5476197951. 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/IL1010001325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x193d29b8a5cb582de40c04e719d8185c8aa819ac55cceefb5158d827eacd1f78. 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/IL1010002221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93033a01e2e2c3e748d4608eab18f741946f712183638ad8d41b48750b4033ce. 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/IL1000003723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x674a14919a765b79263ffe96da52e38bd944f5288a7144dbfd558e30d598a106. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/IL1001900785.
חלומות של חושך ואור - דליה רביקוביץ (מבחר משיריה)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c006c5ab662e0e6d9e67fa6767308ebbad1a645242ef88d57ee487ba5e2144c. 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/IL1010005808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8c1b6b1e9fd02fac9a2c2ded4fc1b3bd0494c52450d68eb7dd6600e9020846a. 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/IL1010102434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4557ec0e42871ceee857df5ad39009e0911027ba9ae62cb9cfe46acdce582892. 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/IL1001085541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e6fe8e7ea38d2a3abaa806f871f9a35ab7a25976167828c66bc0603ac095aa6. 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/IL1010000162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e6fa3e81361bbbc8c465d1c7132d02a32a89dda30efacfde8f58aed31dd3d2a. 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/IL1001900692.
סימן שאתה צעיר - השירים היפים של שנות ה-60 (חלק א)
גדלנו יחד (ראשית הפופ והרוק הישראליים 1960-1970)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71b6f4a728c7ba1d9bc48865149bf4260ea7532eb9287c97dcc2ff7e20ed7dab. 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/IL1010004104.
כל הכבוד - השירים היפים של הקולנוע הישראלי
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd19323b8a7e3fe97f14ae7d67e07c777f2169d38f5bdc886edda2cb57e0595e. 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/IL1011120038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf04bbe50874970b2b5781c6e4584e9522bf3b67d1ce9efcb99a223765cb7900. 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/IL1001086667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92613539f3905e828280ce253c556c63af1073547a8275ec5714db6406db86da. 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/IL1000001220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52d983a499faef289c7096e5fba12f649c74fb55835142ebef45d4ca145f02f2. 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/IL1001089597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c822eda8762aa405892bae145369fb79f193ddd8686f28601778e3dfa45aaf5. 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/IL1001086851.