__NOTOC__ Clare Hammond (born 1985) is a British concert pianist. In 2016, she was awarded the Royal Philharmonic Society's Young Artist award. Early life and education Hammond grew up in Nottingham,
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 0xd277121b40a1e42e46a4a64b7b54d59fe5e6ebe810f583d26d44094108d6f829. Chain 2 (Bitcoin): anchored in block 953638 (2026-06-14T13:10:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/38927aec-5bc2-4ee1-a966-fedab8048149.json and https://artists.proofprofile.net/proofs/artist/38927aec-5bc2-4ee1-a966-fedab8048149.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Chin, Kapustin, Lyapunov & Szymanowski: Piano Etudes
Impromptu No. 3 in G-Flat Major, Op.90, D 899
The Lady in the Van (Original Motion Picture Soundtrack)
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 0xa2a0b97b94dc86d9b001e3231eb766fc9054b9f2641f05f162b01c2f50ba9803. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11507861 — a six-check JSON result.
Keyboard Concerto No. 1 in B-Flat Major: I. Allegro comodo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e5bdb393de04444c9f49c5e7a2b7944ec9da5975a30c10575d78d164c9a0a0a. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEAEY1893010 — a six-check JSON result.
Keyboard Concerto No. 1 in B-Flat Major: II. Andantino
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x720ea4c486744164e5d376292be59cedb45f6f98e37feb4dc7b8b216ce7cd73c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEAEY1893020 — a six-check JSON result.
Keyboard Concerto No. 1 in B-Flat Major: III. Rondo. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92ff13b36a6bb1d5ffe4135ef8ea0808b6279f28c20ae4486da77e009ed1bd1b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEAEY1893030 — a six-check JSON result.
6 Easy Divertimentos: No. 1 in F Major. Andantino
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34ce84b6a3d8c5bb9e441081ac45cfd63c0d4f6ff175e4377188f81b2d0c029f. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEAEY1893040 — a six-check JSON result.
6 Easy Divertimentos: No. 2 in A Major. Allegro ma non troppo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x851036191d215e4fa83d8a53bba11811b083c23eb642e9a8239054ad42564d89. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEAEY1893050 — a six-check JSON result.
6 Easy Divertimentos: No. 3 in D Major. Minuetto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51716e9cc21f33be6fedd3dfd0b09d05bfb8e6ff27eba711c741e9f9f7d61912. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEAEY1893060 — a six-check JSON result.
6 Easy Divertimentos: No. 4 in B-Flat Major. Andantino
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc3e6bb36258756897568d9e95bc11b1173663a8c429ffc218ba12a33e783313. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEAEY1893070 — a six-check JSON result.
6 Easy Divertimentos: No. 5 in G Major. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4290a358336329261ff37457bc4a1cf6f4b69b6eab93f818c32125afde2f924a. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEAEY1893080 — a six-check JSON result.
6 Easy Divertimentos: No. 6 in C Major. Andantino
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfc63748b1710e825ee7895050e93ba40c8e8dcb2bb6b4ae0eb0ba687193132e. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEAEY1893090 — a six-check JSON result.