Boris Savchuk (19 August 1943 – 1996) was a Ukrainian sprinter. He competed in the men's 200 metres at the 1964 Summer Olympics representing the Soviet Union. References External links Category:1
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 0x7c1db0e6f94a6563a0be7ae03d6770cd6fbcfd96526a6155dc7a26dca7889e64. 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/d5954df4-6aa9-4c82-a789-5673213d8202.json and https://artists.proofprofile.net/proofs/artist/d5954df4-6aa9-4c82-a789-5673213d8202.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 0xb821b096e10faa1d9a600df9cdc51cc2097a08782627b0a7d8399d23f0847e95. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/IL1050200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5704cb0a2d6fce5f152cd91ec6c790c7568ebb30a88b58f514d3c67f93123a3e. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/IL1050200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x091010a20891cf1dc39c37457eef42ec28123b29d576a79737fde900abdee509. 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/IL1050200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe37f3a2e0430848505d026be3be1325015bdfcef65ab869de1edef744a7b1b47. 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/IL1050200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x787859fce8ad15c7886593df5fa033856540daa82535835af9db3801da2bfff0. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/IL1050200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddddcfda631c8b4cd92242ea26c1e8252e5064dbdf685fe632078da988d58b03. 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/IL1050400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32f067172ea8fbd760d25ddbc86d40895182311696561f3f9115fbd76d414719. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:33:38Z), 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/IL1050400014.
14 Violin Melodies of Favorite Israeli Songs
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd35bf7596ef779dffd6b0f9688ba6c75bf5ebdcf4efa1b614e92c7f7c87c2f94. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/IL1050400024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3da27a274321ed712619a0ca7ef8abdc8598f73edb2f152d63791f5237d1310b. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/IL1050500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50ea8a0d86a32570cdd9f48f2182cfdf4291678250b1718973adde07a0f493f7. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/IL1050500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f5428a5e9c28d68a3e4687edc677afcf01e080f1e39e132ae144c210e231d1f. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/IL1050500012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30631dbf0b18932e03611fbed3bdbf7c99a78e4a73f32699d9cebaba19545c3c. 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/IL1050500091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25a92192bfecf625b3e4e224604d5e41e26a135833f12aa81080d6390404f64e. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/IL1050500097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf52b33ffcb5e9e2efeeabae9e6a1628a4f2825378c83997a3b35cb17738b5283. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:09:36Z), 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/IL1050710013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe879d85292e1df88bf1beba35a29d83fe3727961a281f63edf68f37365ccb0b8. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/IL1050710022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c35b55d72b2ead728b56659cd6001596c00ffb311da9fcc642ed953144199bd. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/IL1050810161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb46272db859d6cf7d1b8dd304a520a58d1b1aeabfb2d7c0e734c000a48d9305. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:59:55Z), 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/IL1050810165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52f44c556e031b83f54b564ea6a68189a0c59ab98fefbd158b8d08da1d90e693. 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/IL1050810170.