Zahir Howaida, also spelled as Zahir Huwaida (Pashto/Dari: ) (February 28, 1945 – 5 March 2012), was an Afghan musician born into Hazara family in Daikundi. He had been active since the 1960s and his
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 0x79d35818320fa374a9b10620d2fd96b4a6d78159ff05327071397003e13949ed. Chain 2 (Bitcoin): anchored in block 953602 (2026-06-14T06:58:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0ea66364-db91-4f38-97c3-0c058e85cf04.json and https://artists.proofprofile.net/proofs/artist/0ea66364-db91-4f38-97c3-0c058e85cf04.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 0x7c4a1f8bd0d97d3261eb6c4c3c90bf9d85bbf3345772585d31006010fa9ce356. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/DE1KS2406983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda28b83de3cb214de282d12eb4c958ddf3c4efecced3a8f58d6292188bb63b4a. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/USJ3V2153269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6454eb549e048611b7b3d4efa1ff19818cca44be4c5fff4a4edc572d7f0d84d7. 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/USJ3V2153270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafccb72d6267a870cda87fc83ff2ee30bf3b78f4783f75436ffc6b101a840eee. Chain 2 (Bitcoin): anchored in block 957752 (2026-07-12T20:53:32Z), 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/USJ3V2153271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a98ebde0e224d77085c59275afcf0a51fa459e62e4f44231463ac7c0a5c7132. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T23:04:13Z), 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/USJ3V2153274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22087d5a03d151873227eb0746a2f20ac1c28a850869e45e3a7a0468eab08c36. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/USJ3V2153275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x085ce4704c2f09764f14ba634a8557a0ccdd8572decc75dc23988daea0695b49. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/USJ3V2153276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x710f2c27bd884547b2e3f4ca1273dafd39bc6b9506819763a4218eb0e1daac62. 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/USJ3V2153277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfc598f67dcd1f407cd4825c3dcc019fef8477d44832f93c9075d11c8af89cfc. 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/USJ3V2153278.
yeki az behtarin aahang haaye soofi delhaa