Fernando Travassos Tordo (born 29 March 1948) is a Portuguese singer and songwriter. Since 2003, he has been a Commander of the Order of Merit, an honor bestowed on him by the Portuguese President Jor
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 0x0c1c8824a8f2dc091a49e20aedb7856f88d5417be974a6f843e0b32d80eb649b. Chain 2 (Bitcoin): anchored in block 953605 (2026-06-14T07:39:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/10357d32-b97b-4083-8487-9d1336bcec57.json and https://artists.proofprofile.net/proofs/artist/10357d32-b97b-4083-8487-9d1336bcec57.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Cantiga (Grande Prémio TV da Canção Portuguesa)
Canto No Deserto / Vou Inventar Uma Flor
Fernando Tordo Canta a los Premios Nobel
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 0x6dded91a24748708302906ec0232a58c44ee28177d0cde130da14aa84b7229d0. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/PT8HR1900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4080239d15c0277be7b0ea62c97c7b192717f8678a0d429d54c0b7f349a706db. 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/PT8HR1900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d1935a9e2c455923d4b8fb25211306fe54836e75e26ea23e96c39673b80870f. 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/PT8HR1900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebc8eca3aa97da20ea588c7a124d5490b7440c06e852095c2a0d55ea314256b0. 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/PT8HR1900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfa31785e800fdee0852755cb7fa0a9eb0ceaf8e64cc6e51e221fb361f71f5b4. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/PT8HR1900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61bc522a7d6a65e945ed6d47c71d3a400d224e6886d882e8df63274d1e3bd040. 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/PT8HR1900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0af248fc0bb3e149f156c7f2eb51b971915b013fc6f2a0e7520cdf8eff2a65af. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/PT8HR1900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x935b195d3782932dfb3f6559550dd41cc9aca0e349b6721e681ac5dbb9aa6233. 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/PT8HR1900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cdacee9c9b9670fdff13f38e78a6dbe6bf10b869d9c6e367ff0faf03c028fa5. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/PT8HR1900009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa72633df88ee2a082e238dd92f246c3f752dad3c886809b183524ed0c4fe1c67. 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/PT8HR1900010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab8186e274431343f03de13ce41bfec451182df37cc7355e0b8b6641a69d4d6c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/PT8HR1900011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae66ade4f59062caac3cef4fa2ee7b4679ba9ca1bb5366dfecf750de350d2c0d. 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/PT8HR1900012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5707cad86eb3eb318b3283f83f1e02b36b5002d9adaa7db605d99c6262baee6e. 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/PT8HR1900013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x712f2a00914fbb8cc292f1052496bb69ee8896baa491a38d45448e0b98df74e7. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/PT8HR1900014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb86db6d7afb00159717e7fa432dca81a8161ab565119fe023d1f932afdef9992. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/PT8HR1900015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cbc325c7c7934891f47ae206ca3e6a34a151068367b47cca593d3319c09bb3b. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/PT8HR1900016.
Fernando Tordo com a Banda Sinfónica Portuguesa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd15983858732aa5f990d14e42153059685989ea0094dc1b2b0b480bc77edf573. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/PTUM72100240.