Tula Paulinea "Tulisa" Contostavlos (born 13 July 1988), known professionally as Tulisa, is an English singer, songwriter, rapper, and television personality. As a part of the R&B/hip-hop group N-Dubz
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 0xe2f1bdd1597253e641d38309031f19d4ea2d0763c068d924291d12d1ab319142. 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/c1639716-4873-46d3-a8ef-14301002e446.json and https://artists.proofprofile.net/proofs/artist/c1639716-4873-46d3-a8ef-14301002e446.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 0xe34b327b0c889889f1dbb5da4395a8e52e9cd0ba9035ae9bd472e7481b29dc26. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBUM71205224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73848c852d40bfc8b4a63614e5ff47496af6603d05c95b009371fa7bc1e43bc3. 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/GBCFZ1200157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87ebe908f7fdde3c6171d76a234749f8dd41ed7630e51e03cae5be317f56b36c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBCFZ1200219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6ace69eeb1624b14645ba7fe9cc5794e5c0cd3cee1eebc37caa5ba6dc66d6a9. 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/GBCFZ1200221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6184cd67d71c1c66e4711d1077120bf3e6785bf37b01085f519ca225b8575af. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBCFZ1200222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93ad4bc09a24ad0c78a0c0289130aa16e4389a8a34330dd59d2cbcfe4dc01fcf. 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/GBCFZ1200224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x290e72fc878db7b989ce64c6982c4e99120a21f250a2ac18bcacc68a6f795086. 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/GBCFZ1200225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff22794f3693bb5776ce98fa25da63950026b40f7887f8b606ee18633f08a382. 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/GBCFZ1200227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fffaf61a124db01edec0e36c588669ccec5b6af5ba4174fbaadf449a0a9e3cf. 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/GBCFZ1200228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x932f46e2bbcd9a0dffd66bb5e384e3ca452ddd15ff799794350efdf5c2d8c290. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBCFZ1200218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c8dc823902a9b86f8c424c0ddc69d0c37b0e27cf5de75b357c9085c00af9c6e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBCFZ1200234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe34b327b0c889889f1dbb5da4395a8e52e9cd0ba9035ae9bd472e7481b29dc26. 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/GBUM71205224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73848c852d40bfc8b4a63614e5ff47496af6603d05c95b009371fa7bc1e43bc3. 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/GBCFZ1200157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87ebe908f7fdde3c6171d76a234749f8dd41ed7630e51e03cae5be317f56b36c. 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/GBCFZ1200219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6ace69eeb1624b14645ba7fe9cc5794e5c0cd3cee1eebc37caa5ba6dc66d6a9. 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/GBCFZ1200221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6184cd67d71c1c66e4711d1077120bf3e6785bf37b01085f519ca225b8575af. 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/GBCFZ1200222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93ad4bc09a24ad0c78a0c0289130aa16e4389a8a34330dd59d2cbcfe4dc01fcf. 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/GBCFZ1200224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff22794f3693bb5776ce98fa25da63950026b40f7887f8b606ee18633f08a382. 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/GBCFZ1200227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fffaf61a124db01edec0e36c588669ccec5b6af5ba4174fbaadf449a0a9e3cf. 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/GBCFZ1200228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x932f46e2bbcd9a0dffd66bb5e384e3ca452ddd15ff799794350efdf5c2d8c290. 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/GBCFZ1200218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27d898d2291160248bd577aa6fa3f2a55a564f43fab0dec5fd21255e4547d6c1. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBCFZ1200256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc78874be95507b7fffed0adfc1edd428d62011a100d97ae83e4f68fc5430d38c. 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/UKRVV1900010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb9fb17874547641a846918e81c125c4c31ed6822e27884c0430d917fdc33e22. 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/UKRVV1900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbdb6b327ead16e0fa98e250b9955b85ee45c8c0f6e0463910697ebaefa377f1. 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/GBCFZ1600041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0586d3fb70f7f18bcea4debc6cf684e1e9867f0e9032f602b30dd0b79ff6f3ca. 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/GBCFZ1400176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddf959aeaa2447980df72b2f43fcae0aa547ca5be71dc3e52bf8133c5c2d8289. 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/UKRVV1900464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfe1f8cd641ecbf281522b15a2b7cf393d3e832a508f21ce9f19def46be404da. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBLFP1598733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdca5364ce963ba43cb938b2d92f63bcb843c477befdeabefb70165721bd4228f. 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/GBLFP1598734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc160fa89c40a5b429194f369757dfdffc3ca676e71d3d35865e1ba769e1f4102. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBLFP1598735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64fb1e31416550379c3724f239a16f39bfd4341adbe5632b043b688c517776b9. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBLFP1598736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9761b2d28388dd162e145724569da7b8189f12e97399227ef8aca1e5bf83687d. 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/USUM70824408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x456225bf1ee8df57c98abfa107961185298bdbf09e22fe6ceb7b88c1ca75d52f. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USUM71406166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x108c6c7c3fe0d43b9f6d5920343ce4d49be72db32288be0592b978adfb405834. 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/USUM70813999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87971a96da261888e5792fba8e68af764ebcfcbda9aa8a750bad5b59d14c6504. 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/USUM71312049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9599998f3d0ec1874d56913341e0ff05ac868d0330cbb7f6b671241867d44f8. 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/USHR11334762.