The Grêmio Recreativo Escola de Samba Unidos de Padre Miguel is a samba school of the city of Rio de Janeiro, being located on Rua Mesquita in the neighborhood of Padre Miguel. I came to present thems
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02c7fc68b2d2018458f5612e7d27e17b9fed70c19238df74f3ed2229c3b7807c. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7cf4d428-118f-43ab-a86a-e852d52a4c85.json and https://artists.proofprofile.net/proofs/artist/7cf4d428-118f-43ab-a86a-e852d52a4c85.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Sambas Inesquecíveis da Unidos de Padre Miguel
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf502c70a97e50e58cbed6b34c42a2192d7eae50f1171648c4c57b7ecbe709a82. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:28:44Z), 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/QZMZ92127645.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34d31e2ad6280bb04896390fcb3df611b11154bc2b257c2e59993fce760bb2bc. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZTVM2450872.