António Augusto Gomes de Sousa (; born 28 April 1957) is a Portuguese former football central midfielder and manager. During his career, he played among others for Porto and Sporting CP, amassing Pri
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 0x615d20f4270cf151780514fe096d89b65d00acfee9bd9eefb60418b90362729d. 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/c588123d-f59b-40f1-952e-0831ca18dcf0.json and https://artists.proofprofile.net/proofs/artist/c588123d-f59b-40f1-952e-0831ca18dcf0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Grande Figuras del Cante Flamenco : El Cabrero
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 0xf9436b2518ced4567d1b4ca8e392f1100acd280635af68fbd52a470d6fe593f6. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ES7580501365.
Calaña Ya No Es Calaña - Fandangos de Calaña
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90bd7a4e364bd31117dae9a7405fee5919cac36302b1adbbe90b678de1e66f1a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ES7580501367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9436b2518ced4567d1b4ca8e392f1100acd280635af68fbd52a470d6fe593f6. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ES7580501365.
A los Muertos y a los Vivos - Martinete y Debla
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9b2358360f3a83af6ac44ac5ab478a7b3fc1e0377ac26a8facb451b9f4dc4c6. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/ES7581300353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91d56a8bbf9663ead96fc012d4f9d52725014c4f80d8ffc9573989f17c88a780. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/ES7580501373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf71a7e34f9a58bd11c62bcade4c3e6752c4fd5f0983a2f08a478c6f834beaadd. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/ES7581300347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fef5fed2e0dd0a5f9daec36e33c432f07c1cb5d96017b0a6042a4a6e0913086. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/ES7581300352.
Porque Vivo a Mi Manera - Soleá de Alcalá
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x002ca4c24909ed9a2340b3972815d4208fa99b1cb20c64899b1b85ec46ecf19e. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/ES7581300934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90bd7a4e364bd31117dae9a7405fee5919cac36302b1adbbe90b678de1e66f1a. 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/ES7580501367.
Calaña Viva Calaña - Fandangos de Calaña
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf930809455bd125cdf375f39b9c4f3bc3b9bb57675859448b0c0e15d0d9a20e8. 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/ES7580501364.