Stary Olsa () is a Belarusian medieval folk rock band, that plays medieval Ruthenian music of the Grand Duchy of Lithuania. The band has also released classical rock cover works in their Medieval Clas
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 0xed966a62247ee62a2b754bf105763b9c9756c00829469285732825cd6f3ed1b1. 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/078ef524-0093-48de-b53f-01675bacee63.json and https://artists.proofprofile.net/proofs/artist/078ef524-0093-48de-b53f-01675bacee63.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 0xd8f88cf1e30037cb77ed06b81400e8b863358ac8cb9516a5e6a0585e2dce0baa. 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/RUA1H2033075.
Гераічны эпас (Спевы рыцараў і шляхты Вялікай Літвы)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26480bd399072a770618ed1743e204128842611150355b9a48dfaeb84b3d151f. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/RUA1H2033167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1632b360cd18eb1d0cdefbc45e4d921e02cc5b1e75cd55179a6016ef49ba2b4a. 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/RUA1H2033174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x914d2414ffe30b31eaebaa48b30dda840090734c1d97406ff97b1421bf15fba8. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:31:21Z), 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/RUA1H2033097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae246161098683a31f1e433a2da19c07576d67e02e44ea6d309091074ca8b56b. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/RUA1H2033054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fa3723ef67c6bb1c46555226ea1b0ec0876d6f96365461a9ac3924c84185b49. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/RUA1H2033056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00970887d006bbb8ad716c4bbfa44cc845d4faa0521abf392a3f60eaf4213a15. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T10:44:44Z), 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/RUA1H2033064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71031075b7ffb34f6b3eb77a1c2d5e00ae1357015068730d2acd278eee714f07. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/QZGWW2075158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ba913b06a33b83e9efed9bd9db83b757d359663d78514ef0caf739793442fd3. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/QZGWW2075159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67f1366ccbe9fb58fe304a638ef3583e9a7ad987ff76a0f4e0144d259a97f49a. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/QZGWW2075162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0059939c53ac49ea87e16b35e80da518d059471d444aa919e6cf455e02bd75b8. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZGWW2075163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33776f87fdbfdb0b4534f16285b17313a47afca1cd6c351613ee469c1abb4087. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/QZGWW2075164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70c5d79550053050064781bcaa2e88af7470c519043d68be1acf8b87c026d858. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QZGWW2075165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e844783a066e8eb49d5e860c155d87a852e653455410a2de5175853dbc9d65c. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/QZGWW2111561.