Portela or Pórtela may refer to: People Portela (surname) Places Lisbon Portela Airport, the international airport of Lisbon, Portugal Residence of Portela, 17th-century country house in Paços de
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 0xe7799e91ec3e326c5956bc55e65062c21a7fcea6a309c38599be994430b4aba7. 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/68db412d-a43e-4cbf-a8d1-e555529a4a66.json and https://artists.proofprofile.net/proofs/artist/68db412d-a43e-4cbf-a8d1-e555529a4a66.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Brasil, Marca Tua Cara E Mostra Para O Mundo
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 0xffea26e02ec45b6e8a2aaa955af548ade398ec3f01c4bc7afbc6312a6075125b. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/BRGES0500013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72ddd589a4a3aee4dfac427d781de00a90e16416119b7b099af6de1cd9a3dea1. Chain 2 (Bitcoin): anchored in block 958369 (2026-07-17T05:20:29Z), 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/BRGES9500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a6c24ff407ad910f56b67f3a540dde023c589f802de3767e8152c3d8fb9a6d4. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/BRGES9300010.
Morfeu No Carnaval - A Utopia Brasileira
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5001513c76d29f7c4e385fbf168ff2669baa51c2e651ad0067af3ef85edb3ebd. 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/BRGES8500006.
Um Rio De Mar A Mar: Do Valongo Á Glória De São Sebastião
Sambas Exaltação: Centenário da Portela (Portela 100 Anos, 1923 - 2023)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0947677160dd0bf9169e2f7e5efd1a3de0d266a2a2079d8fcf90c8b1473b2e3d. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/BRIUP2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3be50103fb21332933b78b4e6158920b5a404a8536cdef2bab88fcaefee82f06. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/BRIUP2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20c4b9619c353505950a541671c04e6d78f9bd60583560b4b30cefe030161c3a. 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/BRIUP2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43506f85f48cf8a78bb33a9e70cd31b3bf6098c1d1e4d0d076051a5f9650f472. 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/BRIUP2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x087ec34173e5df454b3b0da6ca21795bf1b6d50b3f5d70bafda8dcf4cdf3cd05. 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/BRIUP2300006.
Sambas de Enredo das Escolas de Samba do Grupo 1 (1973)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7257d78d2794ca07e9b5e0730c3e58c7879a586363f5b85793281dca8bb567ce. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QMBZ91571093.
Quem Nunca Sentiu O Corpo Arrepiar Ao Ver Esse Rio Passar...
Sambas De Enredo Das Escolas De Samba 2017
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x491dec8c26dd571354828f028665ccb383ceca0f3251b17b8616fd241584b06e. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BRGES1600003.
De Repente De Lá Pra Cá E Dirrepente De Cá Pra Lá...
Sambas De Enredo Das Escolas De Samba 2018
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25c6f45ea2c15c8349679c574e7c0a3747a67009258ff0438b671f572cd73c00. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BRGES1700002.
Sambas-de-Enredo das Escolas de Samba do Grupo 1 - Carnaval 1975
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x435a62cd1e4ee2b9edd816ff5e83dd24bf8ed7c7807d68f58e0017f366833370. 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/QMBZ91571391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26aa9720b16ec20dc6eb42ae998c6dd2e5988e1d8f8a7a8244461f861ca8b158. 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/BRGES2200004.