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 0x225b9334b0b5e27b0f2c17d04ee878bf2e7e5126ec1104105f8dc374c7d249ca. Chain 2 (Bitcoin): anchored in block 953704 (2026-06-14T22:58:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7948ca47-60e7-42cc-8c43-9ca25b4bfa73.json and https://artists.proofprofile.net/proofs/artist/7948ca47-60e7-42cc-8c43-9ca25b4bfa73.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Suite in the Olden Style, Op. 24: II. Allemande
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 0x05cad30865a763e727560d5dbb201863064d195d2ca4453f88928a52e8f26808. 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/DEB262400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68423620dbe6e99ec3681589127e2ea89da300b561f1d98f49ea9d6747d14c96. 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/DEAD62004701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc95935dc85ccbdfd9e48cbd25c8c79a87147fce47bbba100e8749789871b66f. 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/DEAD62004702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac73511becd8678109e31bca20e12e6ac887bef4be763cc887990f3e6c9b5bb1. 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/DEAD62004703.
Serenade for Strings in E Minor, Op. 20: II. Larghetto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25482b0c766475de568e4879f8dee905a824a5e9985116dad25f50cc02b820e1. 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/DEAD62004705.
Poèmes "Le rossignol éperdu" (Excerpts): No. 26, Mirage
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3347af709eaa122a41c2e9a0f32ccd01903241dc066aafa13b38863d237efc6e. 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/DEAD62004714.
Rarities of Piano Music at »Schloss vor Husum« from the 2013 Festival
Impromptu No. 3 in G-Flat Major, D. 899: Andante
6 Musical Moments, D. 780, Op. 94: No. 3 in F Minor. Allegro moderato
Rarities of Piano Music at Schloss vor Husum from the 2012 Festival, Vol. 2