Homayoun Sakhi is an Afghan-born player of the Afghan rubab, with an international base of fans and many global collaborations. Since moving to the United States, he has collaborated with the Kronos Q
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 0x0cc507fc47b51d1cebc584172e24c3c687b08a586abb8846823494bf0910d9c4. Chain 2 (Bitcoin): anchored in block 953786 (2026-06-15T12:56:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/daf664a1-8f73-4505-88bd-584451520d6d.json and https://artists.proofprofile.net/proofs/artist/daf664a1-8f73-4505-88bd-584451520d6d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Music Of Central Asia, Vol. 3: Homayun Sakhi - The Art Of The Afghan Rubâb
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 0xda1a9212c424cd21eb10479fc71892821070ad8ec4389744571f91aad30d79b6. 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/USA370690754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b412ddd8d114f977c3e86856c76c1d548991435bd6eb672814407135a8c5835. 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/USA370690755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d6b9e417ff0ebe670ba87c685c1e9ed12ea9f643730c0f4724f4e095b652d61. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/HKI191418501.
Can You Hear God Crying?: Veil Four: Incarnate
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15f38a54dc4b5778ad8b645a4951ff09895f3353646cbdac4d2ce2cbd263240b. 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/HKI191418504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6472fa0476df2f0196c328c5b989a10f6096d3714c07621fcbcb43fd6ece0874. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/USNO11400024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58190375ca6b7be5b6d0a5499ba91146ff98cf2949ed6dc7d1f87380c60dd799. 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/USSF10952701.