Roselle Paulino Nava-Tan (born March 28, 1976), professionally and more commonly known as Roselle Nava, is a Filipino singer, film and television actress, and former politician. She is a multi-platinu
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 0xc90cebe931b58f1d521306c88d2ffde190ea54ff8b250ff2c16eb8f94f653b71. 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/c290efbf-3ecd-4fd2-a477-f596e5bcd456.json and https://artists.proofprofile.net/proofs/artist/c290efbf-3ecd-4fd2-a477-f596e5bcd456.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 0x18d59e8c0863068d0bc4067a34fdc12aa5c361b7841168ef370d7a01d6564f1c. 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/PHI011606244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93e89971295763ee2a88b898b3bb6211e760e8e00a2e1598103a18a153444909. 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/PHS099700267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8a6e96e6bc40cc2b6eb36699ff032d8c4c8fb9fb33f67436b5a19acc4b80adf. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/PHS099700269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dc95e827fdcfb6ec48d5adb98e7920e519f158f390722c6b9c960676116b7ed. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/PHS099700274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0f23434be18743f3ba47f88bf4f40b213f417fef918162ea7bd5320bc50b908. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/PHS090201003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3161199ffd7e71d3072861f469c7f5881ea226452884fa535a6687e83276712. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:29:05Z), 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/PHS090201005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6fa755c3f9fdf0f5739243d0afa64f62d07ea602253dea1802eb22b930db18b. Chain 2 (Bitcoin): anchored in block 958666 (2026-07-19T05:00:30Z), 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/PHS090201006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb8a4548c48b403c25bf8b987ee3e7bb2117f2d317b6cfaf44b877c7ffce7f8a. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/PHV031013386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9ac545845e6584addf68095a090c92bd2eee0bc7c5131fbe2ac6d3982a1f532. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:09:01Z), 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/PHV031013389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75556736aebe02685eadd5417d71cbffafb413c58cedded1d1985b0679008a99. 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/QZWFF2571574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1792091035b9ec62ad0f1cc9ede700ed37e8adf10aa73197cd246342d675ad4c. 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/QZWFN2557302.