Maria Carolina Martinez Deslandes (born 27 August 1991), known as Carolina Deslandes, is a Portuguese singer and songwriter. In December 2010, she finished as the third-place finalist on the fourth se
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 0x4ca4b21c92ff6ccaa1463610a20fa590cfb83036dabd968b58586b594ac2d786. 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/0e2c6e37-c7a0-4df8-8231-0f4947307a9d.json and https://artists.proofprofile.net/proofs/artist/0e2c6e37-c7a0-4df8-8231-0f4947307a9d.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 0x8256df04cb88fe525c2ed6983d9d4c84e0452ea8fa6a01bc465da6c9bb3d0717. 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/PT2EU1500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91af4966e3a5fa033454a770579d45a4f8e45afd661c23cc82ff6857dcd64f4f. 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/PT2EU1600005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x590548c24fe93da35f2769bee51f8c70a1e93cfe118c5d977d1fd42f4ceeb29d. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/PTNO11800012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c9bdf4601b28dcc72a9cc6a7e192d292a01a8b3f880d314b3cdda1d6f8d6f5b. 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/PTNO11800027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27ad94fd437471a14c9c47bbd81ebbe7e9c63825400609d6f8c9d87ed02b53be. 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/PTNO11800029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75fb9f598db45400a81dc464eb81f85e880e35118ccec931dc27712903ac24a6. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/PTNO11800030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eec1ceecf11c0f117fcb560815c852ef72f60192d33b558c7deb2bb06b9ce22. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/PTUM72001160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ce3cb2bdd0416f6a229375ec3823479609e6c28d2f553fa84d120e5defe011a. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/PTUM72001157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6b2176f1e413348b46d0d3776dd66a87dad9e31a65c9076d6a825b7f830f533. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/PTUM72001158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eec1ceecf11c0f117fcb560815c852ef72f60192d33b558c7deb2bb06b9ce22. 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/PTUM72001160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ce3cb2bdd0416f6a229375ec3823479609e6c28d2f553fa84d120e5defe011a. 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/PTUM72001157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75f744978d331a735157373f72dcc830db0a57c64411b51ee3a2f563245f71ae. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/PTNO12300101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4926f58497975e94a6998afd923f508247fb05343f3ef878f3cf5f25177b7dfe. 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/PTNO12300102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd20d29465cc312d6bac37fbbea853feb1a2c9b9a58ba050a51f77c1f6a1a806e. 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/PTNO12300103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5ac1d40a82327160449a5c03e6de02db951c85c095f5fa80cce2b446c3eae5d. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/PTNO12300104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e80d08fec2ed0eaaa67c35d1c2775fd5f87c9c846eee9d1a9ba9c243a12f4d9. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T09:43:31Z), 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/PTNO12300105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a7771daf54e298284141f84b35b30228d29f22fd595dba8c73818e45eed4fef. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:48:02Z), 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/PTNO12300106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedfcea2f56fb03b67657ef108ee1758f05c35bc54729eff937b4457145929b76. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/PTNO12300107.
Trigueirinha (feat. Carolina Deslandes, Jorge Palma, Mafalda Veiga, Marisa Liz, Ricardo Ribeiro & Tim)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd13694760cf1b3e440531065c83e2773527b654c142f78a1332ae32cec267fe8. 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/PT4EG1800015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8ff48f1e401d6084968f41b86251c5a5f92c532456c95eed072d0949f14571d. 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/PTUM72000165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6c99f8d8a5ec6b129c5c9942df478932a4aa5a8ecccc782d307b4d81429ab2a. 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/PT9BL2000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54e15282cc5809dfa58847299becb01b50d79a833053f2416891d25d2c45c0c3. 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/ES71G2036672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d90a252e101f2f94f8447bd7e58c53725ce887e03573036ae11d43a27e92645. 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/PTJT12200163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25f872b24f43070d9f38927677443f3091874ba33efb338a201574d000477a9f. 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/PTJT12200149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b3e183d86d77465753ef7e6661754867fa038fe2e1fa35984c371f160db8513. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/PTES12103936.
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