Estêvão Lopes Morago () (c. 1575 in Vallecas, Spain – 1630 in Viseu, Portugal) was a Spanish-born composer who studied, lived, worked and died in Portugal. He is one of the most important polyphonists
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 0xad646c02caca6c87ff7e80ab3e2b570d6946724c251f7d6d241f650b28f21002. Chain 2 (Bitcoin): anchored in block 953885 (2026-06-16T04:12:47Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0b7fd05b-ea7a-45a8-90f5-7466e29b911c.json and https://artists.proofprofile.net/proofs/artist/0b7fd05b-ea7a-45a8-90f5-7466e29b911c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Pater Peccavi: Music of Lamentation from Renaissance Portugal
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 0x71cbbe7aa799d7957993966fdda212fefbddf58cad6bbb5bf505ff4427840a7e. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/GBEBL1820514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dec5d09db62dd4f6e4dc61332c30896612a2163c39500f973860e465db63dc5. 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/GBEBL1820502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d50e30955e8a338499fa35bb0768aff4fd32e5b360c3fde98dbd5110328d133. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/GBEBL1820504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe4fb88eb44bda9aedac740b90da8ff3b47d6f99e9e8c5096d5786c8068625c9. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/GBEBL1820510.
Voces angelicae. Portuguese Renaissance Church Music
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74eb92549d082cc179ce6a7d2fe7be8c245310314ce2967dacc10058701c0901. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/DEA802400004.