Jurandir is both a given name and a surname. Notable people with the name include: Jurandir (footballer, born 1912), full name Jurandir Corrêa dos Santos (1912–1972), Brazilian football goalkeeper
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 0x15f4ed301c6b12afc549d9660a7917adf5af82c4c9de0fef9dbfa48378a0617c. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/801e440b-ed71-4f37-a647-6ca505863fc9.json and https://artists.proofprofile.net/proofs/artist/801e440b-ed71-4f37-a647-6ca505863fc9.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 0x115288fd6e1be8b45e0da335eafd5f58157f21dce6f5f3a043c6354bb4c3e9c1. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/BRNIK9900010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e9d9fcf1f4416a63453051e9c3f793d393f63a911dff0cb46da96f5764e907c. 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/BRNIK9900016.
100 Anos de Liberdade / O Saber Poético da Literatura de Cordel / Os Cinco Bailes da História do Rio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f4c668d6fe7b3e6e53a4324c54d16cd34be98517221eabff182866904191925. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/BRZPT0100001.
Sambas de Enredo Das Escolas De Samba Do Grupo 1A - Carnaval 84
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87b09240fd0a29dbd11fdefe8c08621aed39dbb42e5a5e8e8ca0eb0705a7e6fd. 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/BRTTP2100644.
Sambas de Enredo das Escolas de Samba do Grupo 1A, Carnaval 85
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05757bc111f0249758447f9a127ee3e6c14d568bfc85f78e3a271bce3329e159. 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/BRTTP2100661.