Sarah Cahill may refer to: Sarah Cahill (model) (born 1978), American model, actress, and beauty pageant titleholder Sarah Cahill (pianist) (born 1960), American pianist
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 0xc5e6d6bc18fca04fc1ef78bf49aee5017a43ca2ed660ae2565c15d06b99359a1. Chain 2 (Bitcoin): anchored in block 953954 (2026-06-16T14:18:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/262dd8b1-5489-4891-bc15-bdaf54a25923.json and https://artists.proofprofile.net/proofs/artist/262dd8b1-5489-4891-bc15-bdaf54a25923.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Preludio y estudio No. 3 for Piano: Estudio
Pièces de clavecin, Book 1, Suite No. 1 in D Minor (Excerpts): No. 5, Sarabande
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 0xa93f50ad0ceaa50dd452c6a205c244d1fd357cbe1ab7c92b1a755eb8600425c8. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/GBSLT2213203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b84c95e33af98155ded3251518eabac46c95ea51273bf08aa045bae206d2668. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBSLT2213211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7a777e6c4ad00c8cc4642f68b962994c66fa8ac900dd242385b1f51316519ba. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/GBSLT2213214.
4 Lieder for Piano, Op. 8 (Excerpts): No. 1, Allegro moderato, H-U 423
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c63b3ef6214bcd8b9c31bddd7c4fb21b80c1c20c85902ffbe91b52e2f8853e5. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBSLT2113104.
Eighty Trips Around the Sun: Music by and for Terry Riley
Patterns of Plants, the Twenty-First Collection: Pattern B
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda216e7e3a7c3665fb75584dbf203f66eac3e02ee669912eedf7629a65bfc0e2. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/QMDPN1400202.
Patterns of Plants, the Fifth Collection: Pattern D
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5da1ee4ad48f10b5170fa5975565e76fe0c84b2fd83d098e87062a3aa5d986ae. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QMDPN1400204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5355737cadb19f8d8e143b62463a5807a92dc24ccdacd4c847c4e27209ce4741. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/QM4TX2123266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a81081e8dfcf06836251ccb816b65bbcf1c5395bd77bd84fbbd5ad010ece989. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/US87H0813811.
Byron: Awakening at the Inn of the Birds
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac4c970d8e1b3ec9163e3f03bba612a36ad6559dd6dbcef1c01e6322986cbb33. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/US87H0110624.
Žibuoklé Martinaitytė: Heights and Depths of Love: Pt. I: Togetherness
Au sein de la nature: III. Le murmure des blés
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5dcd7b1e598fadd4b24d7b9a258059661dd0b05c29fd1ab86fcd0ed84047d22. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBSLT2213107.
Harrison: Concerto for Piano with Javanese Gamelan
Concerto for Piano with Javanese Gamelan: I. Bull's Belle
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec6a0574284aca3073d7b1f7d74a017e5692b8e10681fc8a7a346ed13a71ec15. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/USA2Z2100939.
Night and Dawn (Nacht en Dageraad): Dawn
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a99b7513140af2ee9c0a800a8695f44513b264495300b14239569ab0230785e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/US29K1023349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc739ed4201bc913c21019cc6b255a33d3b85bf8615650aeae46e3f3b0066720. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/US8272200654.