Klaus Mäkelä (; born 17 January 1996) is a Finnish conductor and cellist. He is the chief conductor of the Oslo Philharmonic, and music director of the Orchestre de Paris. Mäkelä is also chief cond
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 0xbaae6f0bf032b6d1739a8b04b4b385dfa4de82429b140467fa5659baf5ec12f8. 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/e4262a6b-c3ca-4060-938b-d8fb9a4c4d83.json and https://artists.proofprofile.net/proofs/artist/e4262a6b-c3ca-4060-938b-d8fb9a4c4d83.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Petrushka, K12 (1947 Version): Ia. The Shrovetide Fair – The Crowds – The Conjuring-Trick
Stravinsky: Petrushka; Debussy: Jeux, Prélude
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 0xd0d0fd0346b7f8ff79b1e49e33eedb21b2ba1244896c8b4cbba2e4401b0330f9. 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/GBBBC2400059.
Petrushka, K12 (1947 Version): Ib. Russian Dance
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb15c5e7669c88030c25ca49e550021eacf497da5a194be723ec75c760e33f683. 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/GBBBC2400060.
Petrushka, K12 (1947 Version): II. Petrushka's Room
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd224255ec18443a3c3abde4572ec239e91c0b6b1826787656a48477a8c40f29c. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/GBBBC2400061.
Petrushka, K12 (1947 Version): IIIa. The Moor's Room – IIIb. Dance of the Ballerina
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd89ede1fdda606be51fa29ebb2cef29aa319cde2d48360ee5ef0bea76286b110. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:19:59Z), 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/GBBBC2400062.
Violin Concerto in D Minor, Op. 47: I. Allegro moderato
Sibelius: Violin Concerto; Prokofiev: Violin Concerto No. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x836911612ec0d3d6d98c4aff93128ffa00513adc4539042e2e23fea8c99f6cdf. 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/GBBBC2400109.
Violin Concerto in D Minor, Op. 47: II. Adagio di molto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5fc5b9c83a792d798d0322cd4c076168156255b6e636dcf449cf1ef349a2f5e. 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/GBBBC2400110.