Linko may refer to: Linkou District, New Taipei (formerly Linkou, Taipei County) Linko, Guinea
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 0xcd6bf42a8ffd424ca7b1c3ab5ef4ccc08ed91c4f643ecc80b4afdf583bec81dc. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/41bdf59f-4574-415a-91d6-7fbf9b2fca43.json and https://artists.proofprofile.net/proofs/artist/41bdf59f-4574-415a-91d6-7fbf9b2fca43.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 0xd73a4d9d4f007e01fef82e88688f9bf68e1593ec8d1ec0863347d72813cbd0cd. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T19:27:18Z), 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/QZFYZ1924778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e2c77f88bebf47c2c8e3345c3e621c53a052019514cc8a9b45d9fb81e61f30b. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/QZHN81942061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd11cc4fbc20ee15aa68a86388f06ae4a6b3c7183b92b71a1a0a0a0e98f6a4f27. 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/QZES51995218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x584887db28978038ee3f3ca116e026de3b92a21cef5cf3cf2c0e6982e168ce19. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/QZES51995220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7189570f6cf932924b44a17369c6fd5318e5c732514d9be68e1de4d4efad139. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZES51995221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb33704992db3d0a25bf49607663335a3d5b54590167bc50d020aa9cdcb35d9b7. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FRX282015898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cd5381cea9bcccfa2e20b4dd3c5a5d80078af7253b8ae00d7f76fd869758a48. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/FRX202040988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b38ac41554bd0b6fbcad727848d11de7e06a3f78827bae267145dc13bb901f9. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), 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/FR26V2022849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5dbb758337b7cdc05295f66cc15cef4315494914ee9454f98d7b4d618a9915c. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/DGA072372088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x245370c43f4d1148e1a74597e0470f9cb15a76e5471c12cf2e938ba74d59392b. 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/DGA0M2301724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0036d334450d07024a5008acd08bf32c8632cfb0c6c27e228c978a52cf3cbd6. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/DGA0S2470998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b523ddee40bb1f32d85b54697ef2c7b44a24c85145dd090e1f548e65e1d0bc2. 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/FRX202589661.