Ruth Rogers, Baroness Rogers of Riverside, (; born 2 July 1948Ruth Elias, Lady Rogers, Chef and restaurateur, National Portrait Gallery) is an American and British chef who owns and runs the Michelin
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 0x5aa5d1fcc7eafade313b3ed0472e1e8402bb930d7e1810d7fdf42c20211301bd. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9288259a-5be8-4ca2-9140-765462603883.json and https://artists.proofprofile.net/proofs/artist/9288259a-5be8-4ca2-9140-765462603883.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
A:3 Reigen (No. 2 from Acht Leichte Stücke)
Violin Exam Pieces from 2024, ABRSM Grade 3
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 0xe1a54d0a98e7bc81169911efe49405fdefdbd27074e74be6b8dd37a8ffd054b3. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBEYQ2390303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe155316fd356e7a35594869307bbd9ecf06b39082400b33cd7e26933aa7cc2dc. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBEYQ2390305.
B:3 Rédowa de Wallerstein (No. 3 from Le mélodiste, Op. 86)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3a2070285bea1ba2d34ddd791ab9599851adc7b3032fc5c7b2fc13e72e810c3. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/GBEYQ2390306.
C:1 I got plenty o' nuttin' (from Porgy and Bess)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a3ee206a651fed382d7d4ede25fe8fc1d3f10b156666e415c749b16e1db08cb. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/GBEYQ2390307.
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 0x0a3c87c87be257e0f132bec43ad3c83eedcf40d8eccf07ada3bf52c2a570430e. Chain 2 (Bitcoin): anchored in block 960175 (2026-07-30T00:16:15Z), 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/GBEYQ2390309.
A:2 Allegro con spirito (1st movt from Sonata No. 6, K. 306)
Violin Exam Pieces from 2024, ABRSM Grade 8
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4921a60a7210943df24a7f1dfbd5829dbf5a5d494c16798fa6afe82213d7eaf2. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/GBEYQ2395802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7bf20fb028cc33e5e1ac87652c9febe55776447a3bcaf704d6b05d8f76b5cde. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/GBEYQ2395804.
B:2 African Dance No. 2 (from Four African Dances, Op. 58)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacd1b3dad468909d101f89e68b4336391e9f59bd51c3e981d97b7b6d8689e7a9. Chain 2 (Bitcoin): anchored in block 960218 (2026-07-30T06:57:05Z), 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/GBEYQ2395805.
B:3 Un poco triste (No. 3 from Four Pieces, Op. 17)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ddbb4a9d4341d45eea9e28c6dddfc8c18e7de2b3ced44b598c99ad1272a10ef. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/GBEYQ2395806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2fb847ae4fc2aad66d0c5a0ae9474a880d55a78ee1eadc1d6a1491c78f1be85. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/GBEYQ2395807.