Kasra is a variant of the Persian name Khosrow. It may refer to: Given name Kasra Anghaee (born 1967), Iranian-Swiss poet Kasra Naji, Iranian journalist Kasra Nouri (born 1990), Iranian rights act
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 0x384feb4df80c31326e403f07e753ad850cff83e92f083f97b10c27f6b4984ad0. 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/a92597e9-d490-448b-b820-584ab34b64d0.json and https://artists.proofprofile.net/proofs/artist/a92597e9-d490-448b-b820-584ab34b64d0.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 0x313b7e3a371ac3ee3e0bb480841baa29ae1e30538650f513278f454f1193fcd2. 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/GBVPL2300048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e6fc673408561e9979280c857284c777dde7626eded6c48e517164763d564b4. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBVPL2400065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe463cca35df155dee89bc2c3e82725b67ad732f1146b027a1a7d45f075e0c35. 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/GBVPL2100071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x556ed61178a048932af0b971db41206e3628a9eada179e50d164457fbd285b99. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/GBVPL2100072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf439217723685af95e8e0563e316f9630661c94e8ae901d96c6840fedf66a8e0. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/GBVPL2100073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74a64ae497d9496134d14592956d00b8ed8d67a3db052e741e7c88511f5092a5. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/GBVPL2100074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd71b5e636de0dbe341c633d831c34f80cbf65a451dfbfea4bb7312375033eab9. 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/GBVPL2100075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x025ced18e906b6b26278cc14f6611c755bcb4c89532097b6d0971019d046e821. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/GBVPL2100076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaecda6a66f6bc8a883a8d9ed48161aacc9c7fa168a9fb69834403734eef4750f. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/GBVPL2100077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bbbc5d1ffc8481dcfeefd8f1bf82ffe7d8f38f504c419d76279d09af28ad493. 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/GBVPL2100078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x006614f11d1e5e00def15b5345d1b1981301de06480d69757a4491a3999ff536. Chain 2 (Bitcoin): anchored in block 960113 (2026-07-29T13:38:16Z), 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/GBVPL1500094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x272cd22532d21677f7279ffde3d1d793d71d60e6332652fe1176c06707a5aef3. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/GBVPL2300099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9539bac8348c49c5ce18ffc10b6e7fb7a12fbcb8e8ac606fd13715b3c69871c5. 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/GBVPL2300106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf11268a34df388b94d5e12277877ad20ed31b6d8d705ba808f99d0738adb1842. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/GBVPL2000032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00c6e2e52b30e1d11db5ec7eea6e5f69a9becb5ef9823a171f899526a30dd801. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/GBVPL2000033.