Maria Isabel Rebelo Couto da Cruz Roseta (born 2 December 1981), known professionally as Cuca Roseta, is a Portuguese fado singer, composer, and model. Roseta is considered one of the most important f
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 0x7d55c030547f5dc9ad11a9c00064a2339010daadef84a061533c9bd9f6e7f96b. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bd24f660-3ff6-4f1c-9a6a-1d41583a40e6.json and https://artists.proofprofile.net/proofs/artist/bd24f660-3ff6-4f1c-9a6a-1d41583a40e6.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 0xbc3e58abc784dd782868d97fa0a5b14a1c46e9233e7f9a4ebe616506f51625d3. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/USUM71103243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a246b6943831a387d5841347de273ca7a6a9ff8c4addd246a3b73dbb51b91e7. 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/USUM71103244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1587bb40e0b3762bc164c240cc92dc5e05742d1d5990e14e8c0e9a8278122ea9. 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/USUM71103247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2454ead9d29839427379bfd468d3ec588655dc43acf3b57f98965ea619ef1349. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/USUM71103250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95575eca9e9a7127223133274fed78dc97d6e49489c8f5b06bbf67cf2d46866e. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/USUM71103254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01638ddd97ebfa8b391d111c5b5596ce93f49fe8ed102f448a8d2176c5b41d77. 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/PTUM71500093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x386ab4787310b533bfe378a1518210dc8c3656dedaf3498ed7c5a6a12049b73c. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/PTUM71500086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbecc47a1407a3b35c04239f1adfb37a3bec40dfadfc085551d4c73a61baaa641. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/PTUM71500097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a50a220f7c73fb7e46bf070574de1e53431bd2ed605fa505f6d3fc5aa4521d3. 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/PTUM71500098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x080275a21e409e9996e5499333279209298f7088b2c562ea734ee50e27f9bd59. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T12:27:27Z), 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/PTBM11700205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x487176a7317ccd02647a3d6629376eaad5970ea058563c458df8be2bf20ca5a7. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/PTBM11800214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fe18a508ff7986fda259e8f709278af0d9ba7ddb16df803730fde2f427ea7fd. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/PTBM12000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b16ff5f015bbad0f0b05f238c9b08b036c9ecea4f48f3d0619eb1a0a30634dc. 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/PTRO12000380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe218ce2579644b55ddb931567d11866278d21e606b313e7de3a337b92a96976c. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T09:50:54Z), 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/PTRO12200237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4991e525865c39f8ae12d762ba063d1410c96281d5b2d8a863d3ef54e1479ae3. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/ES31E2302277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a7b52d50cc1aae329d2a7d7a8a2fd2a2e688f5872c400aed508b2a8734c4276. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/BRMUD2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd71c4a062f1d4efbd7449c244cdadb3b5f0e54665c2c83d82474eb927b50fc83. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/ES31E2404714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0945f13e98b54943ffcf10b67f5033114236a0935c663764661b3dee369a3b76. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ES31E2405931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28c38a74f4e70359034400afab1ea9d08479485a8afed0e76549025872f8eb6c. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/BRMUD2400051.
Cabo Verde Nha Cretcheu (Ao Vivo/Tour Nas 9 Ilhas)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8e2db4c4caae07d3f44715951734d64bfb71ce5e98b5846472278dfba7c0e34. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/BRMUD2500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a7b52d50cc1aae329d2a7d7a8a2fd2a2e688f5872c400aed508b2a8734c4276. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/BRMUD2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9639da0b8f236cb7c635fb5c3056659904e25d9d3c05c7c5047002e733088439. 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/BRMUD2500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28c38a74f4e70359034400afab1ea9d08479485a8afed0e76549025872f8eb6c. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/BRMUD2400051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9d4592fe2ea87676f7214d44294cedee9e1ddf268fbf1b57c059e6fc97ddc24. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:37:39Z), 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/BRMUD2500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96b735119efeeec0c9fe368cf42ce7211cae7b5c3dfb90151198cf5785c6fb95. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/BRMUD2500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6260faeea726c6d1647ac1caa69cd1ce8e5ca06696be2b8f30419e38ce46085b. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/BRMUD2500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe1f552981900add11824930a84d47f18d0e438bb02a8efd14da5d034812b606. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/ES31E2515957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fed1c7f086ab1dad36111746db720d9bc4c70def97e16d2dfdeeaa08f51bc2d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ES5701400367.
Jab Harry Met Sejal (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d2b04e158a78ffca1d55d5215faf82982fcd1d08b8848b2e6db7c0747302f28. 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/INS171702159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67c1bd9ccd33f757f271af78c5a2caad5edba2a1982f3dd7840acddede4b1637. 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/PTEM10700126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67c1bd9ccd33f757f271af78c5a2caad5edba2a1982f3dd7840acddede4b1637. 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/PTEM10700126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7fe9d4c685ef29791041e5da3d4700da5f1fd5599831a0c9652018e02da0e79. 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/NLH591100182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7973c053b105c416afc023625e84886ebd9a959daddb340eec8062b6f5d038ae. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/PT2HF2000065.
Não Sei do Que É Que Se Trata, Mas Não Concordo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1897de53412f62c0f58a9b19ace9d70b1548ef17eddf9c4c33acc064bb7e2d55. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/PT1U32400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d4f54b3d586445762fdcef13b94e7485125d061e6bad007ae90de2febd70e48. 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/PT4HA1800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6dde2997e0fbe1b4b444575fce200d6dc9e4b65f5f6d2e3b359f5d5e673d867. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T19:03:50Z), 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/BRRGE1403558.
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 0xb14a3faee8f43763509a4edb7f5732afb4a5bb1514b9fb2868286d52b4afd9da. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/PT2HF1800011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6945a3fbbeadce50989cd9a5fb81063bed2e600d4d7974fe9ff1e2fb590d9e9. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/PTUM71700288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3804831a4fad303bcad2034822329988e1323e0929a44518c9ab529f2f87a0e4. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/GBKQU2193195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37138fe8bcfe52d430dc9c35dbe4871f1cc87583605e560ee793a32b99bf54af. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/PT4GJ2400144.