Elis Regina Carvalho Costa (March 17, 1945 – January 19, 1982), known professionally as Elis Regina (), was a Brazilian singer of Bossa nova, MPB and jazz music. She is also the mother of the singe
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 0x5e5d182f9167b00b16eea2978e4a26cdd3f6ba715e2bbc0dc5989db6b73e2dec. 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/dc61bcc0-a9e6-46a4-9508-40f99590a2e4.json and https://artists.proofprofile.net/proofs/artist/dc61bcc0-a9e6-46a4-9508-40f99590a2e4.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 0xdb336f510f24cedabb7022283dcb869756b833dbef57a6443d391ce6ff366a69. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/BRVLS9400591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5966d97ffec29fcff1d647145575eb1f34ad8935f5a426036289f1417930448. 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/BRVLS9400592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf603f3794ee53a0acb76a063ba62b2edfa0b0d6715918672b8ae8a8dda110a3e. 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/BRVLS9400593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fa897dfb67553f3fc639aa386b6ae4e571fa074e24779a98af4c510149ee974. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/BRVLS9400594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa995a189acc06b3717b5ca3cf78a348e119c5efccfd51dc7aeef586d767aea2. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/BRVLS9400595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64a72b8b668a7e4c3232aff4d5f481581defdf328eb67a19535a777ab11d64ea. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/BRVLS9400596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe11c9a7474c1268e7e2db4085c364f734446bb0a1a5f256d40f4a995c9d60b27. 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/BRVLS9400597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe815ac20bf212678fe127eaa800aefde73b4d7f9d37713e561e3ad0103ee39e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BRVLS9400598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08add07eee30e5a79c825027271e73336561ec43ffffff9a266684a644591af0. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BRVLS9400599.
Sucessos de Elis Em 1965: Reza / Esse Mundo É Meu / Aleluia / Zambi / Tem Dó / Tempo Feliz / Arrastão / Menino das Laranjeiras
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52ce2beee7a2cf00c5c4d10b78429692f3b10cfc6a24226ae4c3fa8155a6b330. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BRVLS9400600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e98c5f167ad0344f0856e049dc1e6a087bf4d385abbf16a233c6462169c6037. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/BRVLS9400601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a613190f3b1c592975308abed0b7db6d7dfc07416e0a7b624a7d775ac4de0d4. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/BRVLS9400602.