Marisa Isabel Lopes Mena (born 25October 1984), known professionally as Mimicat, is a Portuguese pop and soul singer and songwriter. She represented Portugal in the Eurovision Song Contest 2023 with t
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 0x17a1b664bd01eee789a7517bc4e24eaedc5a5ec197cdd83e4f8127f2d6e1af7f. 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/3d4d7c85-389d-4d1c-85d1-371975004f2a.json and https://artists.proofprofile.net/proofs/artist/3d4d7c85-389d-4d1c-85d1-371975004f2a.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 0x9749b5919f9aa8a512971fed3729013facabf445383fbf3cf92a23aad1ea6d02. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/PTBM11400041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60fed7fc0fda3f08cd9c59c0d8d1808cd382e12a5742f469ccb90a2f998dffee. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T05:07:11Z), 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/PTBM11700123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x368cc45b059cd4f6a0b113c43b3e37a312b5c2a74871149fc824c5e1767d254b. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/PTBM11700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x200beee6acd0e33cdc75728f1fa7cccdfec3f62bd2365f7e2f415fe2246236b4. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USCGH2183633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9460a8a9a0b6773ce945bba7ad81ad3a933381ff5a0ef02ad8b9365ac91b1b76. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/ES71G2204122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bbb23652077ba20bc0a70d788ec4cd1cf397ee96607a7fff94475cf9371ad82. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/PTNO12400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d173cb4a9f8f878a0f660a0399b2e76b99e11b2b0aff22ccf86df52922169bb. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/ES71G2420306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe93cc205080c4e3b34e2df53af2e6c9409a07885bf505261b1e43f623af100ff. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/ES71G2412888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f66fc36a16f501b8be3cd466fd8e68b52958c3e25b75a4af69aa55573182d78. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/ES71G2420307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb26d4a364a7c51c3cf757591e88b3b58a76725eed452acf55decf58eccf5bf8f. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/ES71G2420308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa01cfe8bf5f84a3a5cc1403b0d60300bc2ae371886952219de697749e87b973. 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/ES71G2420309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bbb23652077ba20bc0a70d788ec4cd1cf397ee96607a7fff94475cf9371ad82. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T21:23:21Z), 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/PTNO12400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad737ddab25af6ed35e2340aa853b648d9e9a953b734e114d59dd1c3d78781bc. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/ES71G2420310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01842d63eb53a7eca5ddacd66f36fd0f7a4a108f21d110c69e0fbd4970e1bc6b. 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/ES71G2420311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14f09e2a726764b091a02ea31a550925a7c178665e6ea8002587f78a173b86dc. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/ES71G2420444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb1a74213d975b3e0a441beb0aae05977d5cc5a37715d08d2f563452ed03c739. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/ES71G2510848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40f2908591c3ec14a513a1798611acdce855f2c38be9454efaaaca9c8ab43aa9. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/PT8KD2300001.
Ai Coração - Eurovision 2023 - Portugal / Karaoke
Eurovision Song Contest Liverpool 2023 (Karaoke Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x368482f8d9d3a0417c0474bbf45762b76126d0d14933c5dccd5be9a630e3c593. 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/DK2DY2300039.