Cailin Russo is an American singer-songwriter and recording artist. She gained fame through her appearances in the Justin Bieber music videos for “All That Matters” and “Confident,” as well as her fea
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 0x29e027f6eeedd667b76f5fb9708f5cdc659f749eea1333564adc8344e9f760ea. 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/9f7c7043-8bb4-4e9d-9379-b5b42a5faccb.json and https://artists.proofprofile.net/proofs/artist/9f7c7043-8bb4-4e9d-9379-b5b42a5faccb.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 0xab79b6671a70d817885a7b7ff3bd5b3117776b8bac3d7cddf04261204417e4a2. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/UKELY1700014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d22e375260a4500be0ee0e8d914ec946c2bae2d1d5d3323a6b94d4193c2abd1. Chain 2 (Bitcoin): anchored in block 958351 (2026-07-17T02:38:05Z), 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/UKELY1800057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfab52c9821516d9bceb35336b2ed676a82e188120ff290c08b3f487606519857. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/UKELY1800064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e6f2598cf6e5d60dc60a974cd32a16b1d0fcbf05dec8c8e6da4cb8e012a2cf0. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/UKELY2000029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3d18ca7524e6ea22c105120a71a2f88b388785392ee36a01f042f19a4e99560. 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/UKELY1900092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9779df3b481d7d6680dde6ea61694c26e6d5a6893279bc5e009e3740dec02c32. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T05:02:49Z), 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/UKELY1900093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x626ba542e876c92586dbd784cf819c70f18f55bdbb8773f32f7131ffabd6070d. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/UKELY2000046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc21da107c298d269fb2fcbc28cddb78b9a24db22dc4f951135ad855ba4df4377. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/QM6P42215174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc15896f6a28913b2a91dd0d48e37c913a44672f260d52a1c0b816d5309958d0. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QMBZ92252938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cd067061d54929d0a6f06ec84704a671217ddf92349cff1ba5c513271932a75. 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/QMBZ92252941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe08d136f5513ef1b3ddef91a4fee4506d102f6d41c1648a7855196f4d9fbdaa6. 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/QMBZ92252934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eae6e5fe1df897684b5c253aa953d8122438ba73b0fc95fe3564dc55e06f8f4. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:06:15Z), 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/QMBZ92252935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc87eb06c9227a850acd5f594d0a80867b22c1002ae503ac97a01e532842ee54. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QMBZ92252937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x431cffd8d0b294a27474f06ec39806b986f98aeb431821987c34e6905a602729. 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/QMBZ92252939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x898ba5420ddfb09bc8c982d92e0abee64b082db4d3bf48a684786d500243231c. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QMBZ92252945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5764d437ccfd4d7214cfc4a2bce8b167eb9264b720ba18292234af78a7fa3cd. 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/QMBZ92252946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5c0cd92275220095a93f3a0c33aa627c710803de133c26fe5c5df0924d10811. 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/QMBZ92252947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22838e5ad40d6a6ee58c7775d4b4ed320427db7317ab63f33ed967f353841e88. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZTBF2472262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15f510d3153f6369a521be22d7c8d13d6c94af976246972fe03511632f95a404. 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/QM6XS2100337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69eb446b1dd05411ecacead21c0f6ca90f992548d8e4b5a8f59d31302e962032. 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/QZH6S1900249.