Sung-Won Yang is a South Korean cellist who performs worldwide as a soloist and as a chamber musician. He studied with Philippe Muller and Janos Starker, and graduated from the Conservatoire National
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 0x89cd225851cea9e5513b8f179c0346b98984f32428bb25626c1a251986ee7af8. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/82218ac2-68f9-479d-8d9a-c27a0e7198b2.json and https://artists.proofprofile.net/proofs/artist/82218ac2-68f9-479d-8d9a-c27a0e7198b2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Beethoven The Complete Works for Cello and Piano
Brahms, Schumann - Complete Works For Cello And Piano
La Wally / Act 1: Ebben?...Ne andrò lontana (Arr. Cosma)
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 0x36784a1f9cbd8a9ae5a4a3b1de92665e246be0b814da79ac38b7c40cb6eb9604. 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/GBF078841320.
Cello Concerto in A Minor, Op. 129: I. Nicht zu schnell
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6688da4b1cdd50e4ba92a0e2603930743c5dd1a1a859e013b769e517396b99ba. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRUM72400124.
Cello Concerto in A Minor, Op. 129: II. Langsam
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2198c294bb5acd40db64498198bb7204646931ddd92e9a024a19c68b42ae6de6. 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/KRUM72400125.
3 Romances, Op. 22 - Arr. Hiroaki for Cello & Piano: I. Andante molto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbff8ed2442a431ecc676b17b4442913dcdb52f66520708f4d9705ccafcb6af91. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/KRUM72400127.
Clarinet Trio in A Minor, Op. 114: II. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x533030e7514d3395e9968b469b72b94845eed2a726d979eb9b56836bf388a92a. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRUM72400121.
Suite For Cello Solo No. 1 In G Major, BWV 1007: 1. Prélude
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a53340506731cb4d03ddea1bc38c5434255bb69cc81242fcb0870ee76b6d4d6. 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/KRUM71700207.
Suite For Cello Solo No. 1 In G Major, BWV 1007: 2. Allemande
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70341c0971d9a16ef4ed96b8e74166ec02bdf1435a4e470bd87bf5e493edf8a8. 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/KRUM71700208.
Suite For Cello Solo No. 1 In G Major, BWV 1007: 3. Courante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79c2bf00303e423affa97490861cae775d839eaf7808c89ca700de9dc9024b84. 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/KRUM71700209.
Suite For Cello Solo No. 1 In G Major, BWV 1007: 4. Sarabande
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x251d616bf63e4cabefe32b5be42b62db8cd22c956e57136cc8b847b184e564c1. 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/KRUM71700210.
Suite For Cello Solo No. 1 In G Major, BWV 1007: 5. Menuet I-II
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d71216f2d2a1460295f10364ee20ab2dfb62578a51eac674262fd1329c89a53. 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/KRUM71700211.
Suite for Cello Solo No. 4 in E flat, BWV 1010: 2. Allemande
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4904f68842b3e07b3cbf6a8bdf5b88fecf5be370f71a8fa3d4976e5e00321e3. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/KRUM71700226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3d83cb8ad1c8dce30fd0369ee705e4cb437400f68efbd173ab240340bc79d39. 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/KRUM71100119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb259daa2debf6628fbcdf0f040a5697585c2c2684946b5a561adcbcd9a6757d5. 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/KRUM71100131.
Dvořák: Cello Concerto In B Minor, Piano Trio In E Minor ‘Dumky’
Schubert: Arpeggione Sonata, Piano Trio No.2, Serenade
Sonata for Arpeggione and Piano in A minor, D.821: 1. Allegro moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85a6e689121ea312b8f07fd63a920fadcfe22b9696894154a621524e1c4e507a. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/KRUM70900103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd0de0574593063966a347eb4d1ab85e43b9dc5073362a5d879a908feb1e88e2. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/KRUM70900110.