In English, kasha () is a porridge usually made from buckwheat, a pseudocereal. In the Slavic languages, kasha means porridge. In some varieties of Central and Eastern European cuisine, kasha can appl
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 0x30671c3febcabe2d64920c1b857e9275d92383e404d3c7bfec2213e79a727121. 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/6b43c96e-c4b9-40be-9635-d445c5387fca.json and https://artists.proofprofile.net/proofs/artist/6b43c96e-c4b9-40be-9635-d445c5387fca.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 0xe85faca2f645c5dd2ad421c13243a51fcde3f433c340c54386576416269682d5. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/RUA1D2130095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7889047a6e762052eb540bee1e1a3a6f9e88e7fd406aaeaf70abaabf82bc2fef. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/RUA1D2130096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x823ae418417571490d8df77aad8f7b9e751c1618546095badcbb1259ba5391f2. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:37:03Z), 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/RUA1D2201060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaf7ec55b6fc74e81a6cd5e52994e2452fb0cf1fc4d4d18e3fff201b35cc7adc. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/FR59R2523462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4b4e2636ed5c150770a79e87a8a5e5e1025266cf59f3d9034fe49c6d8f29a20. 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/FRX202195680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4b4e2636ed5c150770a79e87a8a5e5e1025266cf59f3d9034fe49c6d8f29a20. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FRX202195680.