Irfan Haider (born 1 October 1985) is a Pakistani cricketer. He made his first-class debut for Pakistan Telecommunication Company Limited in the 2003–04 Patron's Trophy on 12 January 2004. References
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 0xd51c67f88be72740569b896c490ea64bb0528df9135ab315da781371dcfe948c. Chain 2 (Bitcoin): anchored in block 953674 (2026-06-14T19:07:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5adc424a-f416-44ed-985a-4340b8b0ed0b.json and https://artists.proofprofile.net/proofs/artist/5adc424a-f416-44ed-985a-4340b8b0ed0b.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 0xd0b473b107bc6df0724f40826dc3865b1b53b97025c05dea2d654d1c1a2c122f. 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/QZN882158070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x624c71a52952e230e939de2ca40893ad96f367db93aabede88a37945339e7254. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/QZN882158073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x248e23d735a2c03d4519ce1b43d3961b2d87b70281b8507c2bd48f0a4d7d60e0. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T01:45:13Z), 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/QZN882184141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f0d269d0f10c2ade85beedf0937acee6584bc4ea15b5ea091f5715dec155a3e. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZN882184300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x485d6e3e13d7ca6d8810c7d9655f4725ad21b3fb14c780d475c2fed39b2b8cde. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:47:22Z), 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/QZN882255828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38aecb20c181d431fd65c85ba4b5d921666caeabc79f74b87f0f80eca8c0cb0f. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:36:42Z), 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/QZN882255846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80d9cc78bd3e44014f5c1661e737bfbef8b4cd94851a96f58517cc8e79aef72c. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZN882255723.