Cortex or cortical may refer to: Biology Cortex (anatomy), the outermost layer of an organ Cerebral cortex, the outer layer of the vertebrate cerebrum, part of which is the forebrain Motor cortex,
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 0xd834f4dd69e4cb313786825b1e65a378ec18c54489486f09f492046a93e5d68a. Chain 2 (Bitcoin): anchored in block 953807 (2026-06-15T16:39:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e161fa9c-7ee6-426e-b601-7cc4aa6f4495.json and https://artists.proofprofile.net/proofs/artist/e161fa9c-7ee6-426e-b601-7cc4aa6f4495.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 0xd826abe8e988796bea69e2e48a100e4b9411494fba56900254717aa80c3c80c7. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GBMA21901033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x135cbf3cd2d08f11fbf9c83f320dadc7d0e9a6959ba2ca375884e538b40c61a2. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/GBMA21901032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e302c4a0eff0e6d9dfa55441f15c0f4c0f68ef3424a4e7179a7833d3f8c7102. 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/GBMA21901024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa8cb4b7a39950bcdcf334fc11fcbfde33d9be5b1ca3537a7b495b447352c581. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GBMA21900995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f461543a0b5a0797ad4ee6257c94f9d2ecea6da3e9de4fee69d2b8beeec4384. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/GBMA21900989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1e89658477a63af2b85c2b66e75a86ae191b262305e6a3630af425c67739579. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GBMA21900987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ffa63d26bf81a445b222e24f3ce6b0f4eca57355dbef256fbb12c416e6943ae. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T13:01:04Z), 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/GBMA21900978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9eedca2c9d98de7a35afc80dd4d7e48f63eb114ca9e09e1cee6f4e0852dded3. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/GBMA22149704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cd62408a609d779ab7ab871301ee83cb6bc95d865dc3cf2564d0194ef6c136b. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GX3Q92174671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x715da91314fa71f6259919588a0bb4f2c471660a0e5de95e31ec945210f75808. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GBLFP2369117.