Sasan Heydari Yafteh (; born 11 November 1988), better known by his stage name, Sasy (), formerly known as Sasy Mankan (), is an Iranian rapper from Ahvaz. Reuters has described him as one of Iran's m
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 0xcfe9dfb28b624cff2fb4f71146aba592d59e45f8b93a098385d9b20fdc4dc7cb. 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/7cbc3bbd-bff1-416b-82eb-331c5da3d277.json and https://artists.proofprofile.net/proofs/artist/7cbc3bbd-bff1-416b-82eb-331c5da3d277.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 0xbd518680a0c1f452f415c801e4ef73b648e1e28a4074d1e77e32822190247c09. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/FIECL2100866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fc46f0778d13351eda833be28508bf3fddc37a281f72f481cba5a5d6c060140. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-19T23:39:32Z), 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/FIECL2100869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5e31bf7294459e04f6653ddd86e8e0062c6d60ff3a73ef2743195d52783e3b0. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/FIECL2100870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5a5c51803ea736db5369b7e5df502a3de28105d2c729750b08401c16e84bb24. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T18:06:37Z), 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/FIECL2100871.