Blasko is both a given name and a surname. Notable people with the name include: Blaško Rajić (1878–1951), Croat priest, writer, and politician Milan Blaško (1961–2016), Slovak ski mountaineer Sarah
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 0x8327a40d0c33930e55a36022f6ba6bc06fdad63774ca8c868b348e134e416e32. 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/cc337a1a-7920-4cf7-a224-b2943f8693ce.json and https://artists.proofprofile.net/proofs/artist/cc337a1a-7920-4cf7-a224-b2943f8693ce.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 0xad84d9e72bfc5e0799da0a87064fc18bfa499bba0ccd5540b49cc16a909ac803. 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/FR9W11905677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1744c3d689963414bd1d306d1bcd9707c3ca39c73a256a555eb1fff4ecde69fd. 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/FR9W11912504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x995500245d3337586791aa7de18b1ce90d4eb740e2ed7f5e47dc6bdf899caa07. 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/FR9W12226812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53f45fa7f654b51d77a596c87e26525814fb59266be5834b7f9d9cdf09b5e0b9. Chain 2 (Bitcoin): anchored in block 958613 (2026-07-18T21:35:09Z), 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/FR9W12231078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x995500245d3337586791aa7de18b1ce90d4eb740e2ed7f5e47dc6bdf899caa07. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/FR9W12226812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb83cba87b45c4827c708c376c3fb2b02cb28de5ec6e67a0ea8f6aa53900efb35. 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/FR9W12231081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcca03f872b89a3a74fccee33b34dcc095f5f0dff75393a00a7839b4f9b5771d4. Chain 2 (Bitcoin): anchored in block 959013 (2026-07-21T13:39:11Z), 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/FR9W12249652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcca03f872b89a3a74fccee33b34dcc095f5f0dff75393a00a7839b4f9b5771d4. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/FR9W12249652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75e46ea901c95c0de73a538e2f666ee756f8c6b0326bbe6a0eaf2a3feddbf819. 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/FR9W12252953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48bedb16e9d28d44039eaa58bab6403eb37aafe0a4089cdcd4236606277326ea. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/FR9W12252956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11c6db9ad240834d761dc44b1aea25b319d4a20ea3e6439709e1be20c1c64379. 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/FR9W12433611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f46c0d1b574d38c2eb9972759ee9e5438b83c3ee50101b1e33ee0d02da40525. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/FR9W12547613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfac6254077994f195929668fdb0eee2d33beac06fa9445426728b70be1a77dad. Chain 2 (Bitcoin): anchored in block 958776 (2026-07-19T20:11:59Z), 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/FR9W12547620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba0c94a2956f3313244d46c54097e8a7af61553dac51dc52d46d634176903676. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FR9W12547622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d0629ac43a1d410a3f8a703fc61cefdc508973e3e4dfd1e12e04e71c0fc3928. 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/USRY20601035.