Ana Elisa Pereira (1845 –1921) was a Portuguese stage and film actress and singer, mainly known for her work in theatres in Lisbon. Early life Pereira was born in the parish of Cadafais, in the munic
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 0x42492713aa3d655e33e5a46e0ae0d1d5d8bc27727807688b9b88c8da3c34d89f. 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/37f2b4b6-70da-4095-9b0e-d32db0387083.json and https://artists.proofprofile.net/proofs/artist/37f2b4b6-70da-4095-9b0e-d32db0387083.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 0xbc4954d0fc47d0f03a313ee82cbd9a9d2488348e186be9b6f1d383d9fec6e5b7. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/UKG8V2100049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96a4d16bceebfd0f3b77e0689a3c6ec4d2f1b3905ea316e3c85bbc09e43883d5. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/UKG8V2100050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3337a4ca39c64f112eaf649d37754494dfcfe5a1587371d840e2af5202a0f50a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/UKG8V2100051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9184f70ffcda3616eadf1000389cb4d2b8af7e0d4b9249134217f6c31c579231. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/UKG8V2100052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8f6259081609488132b09019decdfed7439199f86e2b9aab7c1fe81911fe9b2. 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/UKG8V2100053.
Something Just Like This - Piano Arrangement
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36ac6af5fdb926a4208d455657629342fe788c0321f2c19432ffe4e7092ff476. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/UKG8V2100054.
Say You Won't Let Go - Piano Arrangement
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x863533c9ba21cc91d574b4bb93c35cc59dc76d5488c7d855985a93d400b365f2. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/UKG8V2100055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ee0ae172f1c692d1670a755ed9984be6910c41d55b8602f00cd08b891334464. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/UKG8V2100056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x942f94782b2241eca596367603b3ebba1ae95014fd8d4d4f17a44a2752e15af6. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/UKG8V2100057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0abc4b7502442f7e6ac329829fa1ce5a17e2fc8d35e12296605609a1fe543f48. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/UKG8V2100058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ed5f9ba3cb2fc69f6cc8626fc3b12703556af0a07f8ad17caa31b5dbb861599. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/UKG8V2202647.
I'm Not The Only One - Piano Arrangement
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82fc05c1695e54861bc9f795dacb1b3ac8779334308e44d837ef098c3fe64c61. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/UKG8V2101584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf38794dc6232ba7e024c0167b6f76ac280823985f93e9f2c38758ccdc47e8ac0. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/UKG8V2100757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfca8e37b8d78a26cd9b530535c95f8a6a0336a94794fd698bd7b4f354fb9d458. 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/UKG8V2100694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd00407f809e55895966eeebfefbc5514d8ace47eab713755cc650b511f816238. 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/PT5TJ2500380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x442d2569d12e1a31012c66825c02c28f7a9145db1c00cbc1b5b71c9aa9402fe6. Chain 2 (Bitcoin): anchored in block 958041 (2026-07-14T18:13:17Z), 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/PT5TJ2500384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x731840f0890bee7e40d0c40ca2a0199da2f362342e2ad50c6b834ad77e9478d0. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/PT5TJ2500383.
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 0xb3b57c1e2c05fd7a79ae241a5f911dfe0daf59559a111d6a287b1e9e92e98896. 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/PT5TJ2500402.
Strauss: 4 Lieder, Op. 27: No. 4, Morgen! (Arr. for String Orchestra by L. Mendel)
4 Lieder, Op. 27: No. 4, Morgen! - Arr. for String Orchestra by L. Mendel
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88a8d8fe0654b3d76c84fafb96feb4389c75cfca4c6a58cf321668d5bc47dff7. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ITD542301398.