Sophie Marcella Cates (born August 25, 1999), formerly known as Silver Sphere, is an American singer-songwriter. She independently released her debut album Yikes! in October 2019, and was subsequently
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 0x52856c1ae63900a659e9070bec02df5ea96917b2b0cd48f4d5f5493d0a1f9917. 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/2be3cf52-e3a5-47b2-8dc4-dd33bc18558e.json and https://artists.proofprofile.net/proofs/artist/2be3cf52-e3a5-47b2-8dc4-dd33bc18558e.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 0x713237a91856387a08ef5e1f07c4538204ba1b7777d5962c06c8490f00c9708c. 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/UK6KW2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x828e4d7ae10a04fcb22ddc190bd997a6c0c6aae44dc4e0efdbaaa1caebe069d4. 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/UK6KW2300234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbfba65df7581091bf951f01203cf32182b08cd46f96d6678b76c292153002ce. 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/UK6KW2300281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b02f15e7d59151ce7323668de653dc75e1f12e5544503d4a6a4be9fbd4da469. 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/UK6KW2300358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x500cb76caf58c65ee97a84c5169bd309b9263d7df3ff2ddeac7805381944357d. 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/UK6KW2400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a2e862bb7f0a6704e7d24857a6bf26521e0ae2255b0ea5909dcee1ece662736. 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/UK6KW2400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a7231c6cf7ad70559a59c4793c452768447e75ee5d2c06d016fe9116b872ea1. 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/UK6KW2300165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b60833df26fecfaa00738fbe52355166f8c0ac7cf085cf35f9979b5eec5d651. 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/UK6KW2300326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7f156297830b572726930dce7e435b0e44ebd7381df17aa99502729e66dc972. 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/QM24S1806817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa72eb70ecf6f771c60f4ff42e4f8fe5c9d5b3eb867c6c3e73a99b8b436cc36e9. 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/NLRD51952535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3c41cbbeb216e6b02c0d15bd991c0deb3937d175beb59f817b0e553d8f260e4. 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/QM24S2300335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7b35d338e26f461a18a76fb108d58262607d8ff73d4960b040767beeaa8d6ff. 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/USRC12003791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cae5f08df3c081554399ebb350c7ed4b5f0fb79634e17e01b3bca5a7ed8227e. 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/USRC12002299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf27e19c78ae1380c9609a12b8312e422ffe9f64bdc6b17ba70094a372736c0ad. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USRC12002297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e43ae655f55d25daacc231d04094f2375e03cd40a8e90b258d6b25b19752553. 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/USRC12002298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7f156297830b572726930dce7e435b0e44ebd7381df17aa99502729e66dc972. 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/QM24S1806817.