Natalia Margaret Louise Mar (née Haddock; born 6 November 1996), known professionally as Talia Mar, is an English singer and internet personality. Her collaboration with Sigala on "Stay the Night" cha
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 0x490dc15b6309d27a1927bcecd452595e907c10a5b3c0aaa79017deddb69e2434. 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/8da6ce4c-6973-4847-921d-ad6fe057f1c9.json and https://artists.proofprofile.net/proofs/artist/8da6ce4c-6973-4847-921d-ad6fe057f1c9.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 0x40d2ff765e25dad8a86a1a10ab5ea2b2c62cbcf2d2431e6a032d611054867b31. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/TCACZ1722156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87146a79923087d5f403db52b490499ce4b34c8ecea5b2958e512fa66aafcaf1. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/TCADC1769770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dc95403b6657da3907744ac8eeb7c4155489c19c5fc3008645b3511000a0ed6. 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/TCADC1769771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10c935bb78c6baef243093eb9430701d1eb1b6c0fda612d0bc4bc87aef4579fb. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T02:47:07Z), 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/TCADC1769772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x742eccd883498e38260d4f0b2ee9d805ba147e5f5eb18f624c681214a5c65401. 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/TCADC1769774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5770da1b07dfbdf59df629d07b153968e79e94c6324a5a686ddb57177f68850. 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/QZHN71956831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x316e1d3c64178922e2b3711df231dffb3021c6678e53becadd7635966d16a504. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/GBARL2300489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6976b8b4896b1f4b103d6f37e287cdbb09e754b155fad732f4a160568a4cde07. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/GBARL2301823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe17c63e330d5520fb0309c86e771eb8673c28e4329cec79eae6e5b7766092ef7. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:44:13Z), 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/GXH2J2511102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc452eac348b8dd2a2da83615d0f1e7056eccb8ea99d488ad2d481506d7496882. 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/GBCEN2200051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5295a28d386c5f5f388a869a4532b7e383339307bbff25c17d9dc53397e1cd10. 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/GBCEN2200126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6d8bb160fbc5f547a08c48543a4ffd4da2b9b9ac7ae2ca9880dc6ac7edf5a6c. 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/GBCEN2200120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc452eac348b8dd2a2da83615d0f1e7056eccb8ea99d488ad2d481506d7496882. 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/GBCEN2200051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04ec7bea3604edeb751544c33904d340b1b7ab0905063c23439f4203c6988458. 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/GBCEN2200119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x077fa11b3c72cd1a3474325adb9d42cf9c5158548f34a73062dbee13a22799eb. 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/GBCEN2200117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc452eac348b8dd2a2da83615d0f1e7056eccb8ea99d488ad2d481506d7496882. 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/GBCEN2200051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20a5f7e206614be9724ad8feba1d53181c40de3a50ff8b2f7d71aa3e36ac18ee. 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/GBCEN2200056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc452eac348b8dd2a2da83615d0f1e7056eccb8ea99d488ad2d481506d7496882. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/GBCEN2200051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4d5c49fc08d9d59ca346bf35a6b6be2bdd005c75e03a326edf723f192226975. 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/GBCEN2200100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc452eac348b8dd2a2da83615d0f1e7056eccb8ea99d488ad2d481506d7496882. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/GBCEN2200051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecd71198697e98cd9669562c1f3eae53c0882c90c0882d86ac3cbff895c80eb3. 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/GBCEN2200095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc452eac348b8dd2a2da83615d0f1e7056eccb8ea99d488ad2d481506d7496882. 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/GBCEN2200051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29036bf425f705cce7f373ca05812a5952c9add12650b43a2eb3e21a91fbb7a7. 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/GBCEN2200074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc452eac348b8dd2a2da83615d0f1e7056eccb8ea99d488ad2d481506d7496882. 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/GBCEN2200051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa97bb7db57dc58e536a169c38e732d1609a6630bdb7dfbb1da05a391f7f69b8c. 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/GBAHS2201241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b32f5d378eb3b4f052e5b307403124c2501957e0fd379c3311dbf18463bd6a1. 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/GBAHS2201463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa97bb7db57dc58e536a169c38e732d1609a6630bdb7dfbb1da05a391f7f69b8c. 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/GBAHS2201241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb66f532eff4f8dad1d80efee8ce93514f59ad666b8f3a6b2b1898e22a770082f. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/GBAHS2201507.
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