Vivian Girls is an American band based in Brooklyn, New York. The only consistent members have been Cassie Ramone and Katy Goodman, on guitar and bass, respectively; the group has had several drummers
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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7733233eb8fd35f16fa394d9b56939f2eca3d5e1cb05a018b20e49d40736b329. 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/be05b0ec-8486-457c-8ca4-6dc8ef71697b.json and https://artists.proofprofile.net/proofs/artist/be05b0ec-8486-457c-8ca4-6dc8ef71697b.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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8198e3c216eaade5e0833e1d392e04af1281d484b65cfc39a33a7f59e8fc577c. 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/USA3D0810057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf68471c18433de8abf9fbabb294533ef954bee28e26e07d022a752ee2867a5e. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/USA3D0810058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd44299880be34d43882bc24b84bd466c1c8fcc163b64970111ac86387509af95. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/USA3D0810060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa28f0ec02f809e671aa875293acb470471e0ec628a918cf7b9ca54c296e8180d. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/USA3D0810063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa41e6fd8553259d5450ac4632d32c2b59b8f6fb13a71fc4d7ce19798ce7c3d95. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USA3D0810064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x555dfed1499a936998b21246db0aef821a2364c711915e43e96c2dbdb41a8bf6. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/USA3D0810065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb78aa4c348a7fc331a7f9710fb7f47a261224cdee303e30c5dbf5865f1efb5c7. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/USA3D0810066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27e63ab1af2d81387065c75baf0c4ef91b629fc1d8e89a1ffea5bbaabb3511d9. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T06:51:25Z), 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/USA3D0910104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd870b58e97bf731c94acee47095d5bdf94c8bc5373fcb170de4457f87085d9f9. 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/USA3D0910105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89d2b816d415fcba692a06886807df0f3b75c254cf4170283d068de6439b1506. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/USA3D0910106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x251eb13279fcf02ab72ef16e67feadbed6806963f2d221e2f80f0841b19bbd82. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USA3D0910111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2be1bc089ec10114de4c658cdb3169d883371349369708914f85a7d48f66a1a9. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/US3R41121401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c7f8a0d4f17f1fdcc422a5df100caec601db905a0c982cdb78cc93b1f7d605f. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/US3R41121403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd022ccb1f7c86fa7cb760189e49ef67d6888ece9b6bb4ee58b7d11762a5d3e61. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/US3R41121404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf9abc9e9674608c5d71d59e75f375f78051edd5d9812bcff649e430b03c0b94. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:45:20Z), 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/US3R41938301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x628a143b7fa6516827a6698ffcf973adb48561c96b7094d9af6e5cb3fcb34da1. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/US3R41938302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa34f16b0294a71c8a8ca694572e6310a67d3bfdefeb5b20a7a8d94f5940b2d85. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/US3R41938303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0325b6cf94c130ad44da201b92431a5a6ee285813dd382e0d7d6e0e73b3cb98. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/US3R41938306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc218e7f51b0eef42928a1d1daba467acf44fd2d8cfb0e619f6a04cff4eeb35a. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/US3R41938309.