D. Maria Teresa do Carmo de Noronha, (November 7, 1918, Lisbon – July 4, 1993) was a Portuguese aristocrat and a fado singer. As a granddaughter of the Counts of Paraty and Belmonte, she belonged to a
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 0x5dd86a5106ab363fbcef83b5a690e72d640da54856b4361a6feded56dc82db20. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fb778b2f-9e8a-4720-9eda-64a5c0340179.json and https://artists.proofprofile.net/proofs/artist/fb778b2f-9e8a-4720-9eda-64a5c0340179.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b789880f0aa3f240bf134cfc539a0df41f8bd4b54d398584e13f57f21332159. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/PTVC16500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf11b45a83d97221ab7e23ca11c3ac98e388ff691d659fe557027b0a4b12b85a0. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/PTCN11300015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x914e29e4da8b2d3882360a718f9397c27293854305927e09bc92d34d9f89ead4. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/PTVC11800255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9738dcf0c38a4c02e3714e0c0b045bdab6104785e7dcc2e15d59d002567c83cf. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/PTVC11800232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f653df9c02043c23e40b359fa6724ffcfd5cb24b321b159425c93bc827f6951. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/PTVC11800243.
The Best of Fado: Um Tesouro Português, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35409a4dd9a5c59deb6a7ff58dd8eeea777e08107f7116555cc4f0723617736a. 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/PTVC16500063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26eb6af6cc9f31a89d5b07b56d8dd5629b23b452ed5a59745f5cfb209f2801d5. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/PTLR11000195.