Ferdi may refer to: Ferdi Elmas (born 1985), Turkish footballer Ferdi Hardal (born 1996), Turkish weightlifter Ferdi Kadıoğlu (born 1999), Turkish-Dutch footballer Ferdi Özbeğen (1941–2013), Turk
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 0x6754a0b12aaa6fb3a3d70eca8ed91b207e39b360970aa529a866ae0faf9f1472. Chain 2 (Bitcoin): anchored in block 954533 (2026-06-20T08:57:02Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a53cd34c-dbc1-43e0-a509-6f89d9d31f35.json and https://artists.proofprofile.net/proofs/artist/a53cd34c-dbc1-43e0-a509-6f89d9d31f35.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 0x7256778d8c72771d7e99c1674d580f64b42dda74f5ed838f63e7c1c7edc0030c. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBSWL1700022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1849232e2d414960a5b2b5fd0064a1a367c6de7733840189ec6efea0b74c4db8. 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/GBSWL1500023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c4fcc0011f22ea17cff115675d64615745a1011691f6244329bf7622cb8cb18. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/GBSWL1900025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f26ea097b3527e8e9c81806167081b2e2fd3ca069f77aecd4b843006d7c0489. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/GBSWL1900026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa408ffabbb4bf74ad42a85026dcfe4aebf6f89ff01b7fde1d3044e5a8ad99504. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/GBSWL1900027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f2979a4dabef397c8c68261c93e8ee11b48213dd05e54c671a95ea1cb4569e7. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/GBSWL1900028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc74cfad11ac215540c6ac5e0292a74646bfdffd730f90afa6ecae816c0f3e28d. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/GBSWL1900029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed34c08d1cca513703b134b5ad53d2a68316d04f5ecd1d3b4d7458c794b1ed05. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/GBSWL1900030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x539157ea3868d02f94f9b5b8c409c85884afb588ea26adc7f7d3bec42f2f046a. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/GBSWL1900032.