Shook Twins is a folk music group originally from Sandpoint, Idaho and currently based in Portland, Oregon, formed in 2004. The nucleus of the band consists of identical twin sisters Katelyn (guitar,
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 0xf96a512ff2e4df7f2f44f35dcfee17ddfa42024610ce61509abade75a4703d19. 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/b56115e0-4615-42cd-89fe-6bf60be49986.json and https://artists.proofprofile.net/proofs/artist/b56115e0-4615-42cd-89fe-6bf60be49986.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 0xb21c519e143a39bd339e0783504dce40d9ac74421cb9b245a4b793ea531e9bc6. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:33:03Z), 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/USHM20853582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb49df126b11c424ae687d271ddb980ed6eb40d97f76a7edbdfca0247ee63e99. 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/USCGJ1161511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x385e2cca3f2de0a764de45d42b5e724757916272673868ebc70222884b9e8a0d. 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/USCGJ1161518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8379a8f63e1cb612af426236d3cb89d4aa825048fa61af5d38473252adb36e71. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/USCGH1412679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea80a66944ba251552c2483f097f34c443e96486756a8a19f8fb5a5077ecc23c. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/USCGH1412681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc930625d6b5da05a476d3e762342d011f0629f20f9703bb910ea9ed9cb7f8d4f. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/USCGH1412683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ecb17a9d6c2d15900406c8f005cbed65bf21288d5eed6c208c78177b0259e4b. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/USCGH1412686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x840ae43ced3a3e464b38ec7b11f8734c27cb154aeefdb9ab779d01999e912e93. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-19T23:35:39Z), 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/QM7281805533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf4bccdea5ae859f66339bf1c7a2f78a5a8f071dc383b27b8e8b14404df0bfb9. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QM7281805541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95321d814d55d1df4d1a59a1b62429f12f7f7a45f27f44663b4af3bb2a164caa. 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/QM7281805543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe25a772d65661c3db25f52750ee7946cb583e7a48e7f0bafa4835fe0887d4129. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QM7281805544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3363299136ff810fa6af3a24c303ab13007a2a9160be7dc2bd2220ce85740dde. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/USFLB1900600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x179387485de88ecee0cf1c4bdf09b6b31cd04ba1b7d6aafa8b17bcd09f52322b. 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/QM9A91606528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb0e89430b5e47de3e5a967a039b66a279ae5e4a8b85b2a312e997b4e4a5d142. 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/QM9A91606532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39d97aebe2206dd18b7d653c9dc564c6591a5d8185d34377c79b5a03b129f9da. 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/QZTB92267136.