Sarah Ellen Jarosz ( ; born May 23, 1991) is an American singer-songwriter from Wimberley, Texas. Her debut studio album, Song Up in Her Head, was released in 2009 on Sugar Hill Records"A Bluegrass De
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 0x39a4bceb72d46bf28eab1adc16c91edb4cd07130f1cb29ff188755934d2eeb6f. 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/b870cfff-0350-4efb-95e6-8fb817665b76.json and https://artists.proofprofile.net/proofs/artist/b870cfff-0350-4efb-95e6-8fb817665b76.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 0x443523ffaf67e313ed1fd7f337dd1916def02d0934fead6729fc5f162be59c0d. 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/USRO22303844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c3fa7ce4a3bcf8c70c88f7b9746f5db6689705c1299e2ff699d721596018259. 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/USRO22303845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2570c94fea242ab3196670d2dda3876bfddec34faa15ad72bf713cb0dda2f137. 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/USRO22303846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12146e63d13fd9ffc4fc19e0b0b276b51c86cc9582e616a614fcd8663350e46e. 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/USRO22303847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x466dc9d86bb0a5f09cbcce488357d6818762cae0cb45d2d805f65c491bcc3c49. 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/USRO22303848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf78eef9264c5495d295ec548f5a5f09f52dbd5ee7a4105aeea0d9cddd6ebd13a. 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/USRO22303849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcb660ea1f4ca289c13a111b97e1318c3986ffc2141bb53852af02a941ca4a33. 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/USRO22303850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95fce9e276a748c195f668ecf6359c26cb0a0b679b2eb845ca52bd5f848cd464. 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/USRO22303851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaf8e53de68c9cdf6bca92f7f35609278c2fb6e9b1828d41205b07ea55543a22. 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/USRO22303852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0728edf769ace95aae8ac80e614d406426fd9b8af7275078fdd97810e1db2bbc. 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/USRO22303853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf976e50f69826dbaf4bd5a2a0b41cc05084d4e04892a222bc802cdb8c1fc0eb. 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/USRO22303854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aa7e0b7e0524d65b5b6e79c00e5e87a350f92d64cf8389d81789862e353c0ab. 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/USSH51301711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x443523ffaf67e313ed1fd7f337dd1916def02d0934fead6729fc5f162be59c0d. 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/USRO22303844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c3fa7ce4a3bcf8c70c88f7b9746f5db6689705c1299e2ff699d721596018259. 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/USRO22303845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2570c94fea242ab3196670d2dda3876bfddec34faa15ad72bf713cb0dda2f137. 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/USRO22303846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x824ef18d3c27e1825efbd34b559c8d6e6171370ddee67644725519aae77acb4c. 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/USRO22404892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x888ae338b1e140a906f8f366a0d44de7d93fecf370298429df994b21659bfa14. 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/USCO92279803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x888ae338b1e140a906f8f366a0d44de7d93fecf370298429df994b21659bfa14. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USCO92279803.