Andrew Wan Siu-kin (; born 7 June 1969) is the former vice-chairman of the Democratic Party and a former member of the Kwai Tsing District Council for Shek Yam constituency. He was elected in the 2016
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 0xb7917fd8519b6631edcd9e8fc3619210d70c765656836e6c86ffd7f1ffb6f60c. 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/b727da61-c1e8-42b5-bee4-6b7183df5b92.json and https://artists.proofprofile.net/proofs/artist/b727da61-c1e8-42b5-bee4-6b7183df5b92.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Violin Sonata No. 1 in A Minor, Op. 105: I. Mit leidenschaftlichem ausdruck
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 0xb414b0e9e6bc9878ae0afaf1c7d3272bc9f477774c6a8c73a86ebba8dcd9cd23. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CALC42200501.
Beethoven: Violin Sonatas Nos. 4, 9 & 10
Violin Sonata No. 4 in A Minor, Op. 23: I. Presto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16c506b202053feb6935d26872255bdf60c41ea154df2cf53f47b6b041c8cdf0. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CALC42021221.
Violin Sonata No. 10 in G Major, Op. 96: I. Allegro moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f5566d509d2665041cb3f9a341f45bce6d091e7b65c30b2b04efc5a1309ebde. 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/CALC42021227.
Violin Sonata No. 10 in G Major, Op. 96: II. Adagio espressivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe69c3e814fca466187c99a9097b79aa2236577d08158b95e5300644fdf343b5f. 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/CALC42021228.
Ginastera – Bernstein – Moussa: Works for Violin and Orchestra
Beethoven: Violin Sonatas Nos. 1, 2, 3 & 5
Violin Sonata No. 6 in A Major, Op. 30, No. 1: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44e75b383f6ca9692ace701029b6699c24229fd8e4faf2465c0d86ba26b44e0c. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CALC41800241.
Violin Sonata No. 7 in C Minor, Op. 30, No. 2: II. Adagio cantabile
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7602b109c142572218ef8b3d061720befd0fa60f307c3af24dd3a1d94eb2158. 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/CALC41800245.
Violin Sonata No. 7 in C Minor, Op. 30, No. 2: IV. Finale: Allegro - Presto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f4f1531a328bdc32bd21373eae8ed5fe1db013436e5f58a896de34c0e0bfc94. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CALC41800247.
Violin Sonata No. 8 in G Major, Op. 30, No. 3: II. Tempo di menuetto, ma molto moderato e grazioso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e58db07ef5e0efafa0207d78778ebf1a99fa5da9efc11f8b8ab8c825c36bbf4. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CALC41800249.
Violin Concerto No. 1 in A Major, Op. 20: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29bc050e769e0c3d3ecca94a4452e8e4d45cae91f7f2d50c79b6478eb172ec90. 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/CALC41501201.
Violin Concerto No. 1 in A Major, Op. 20: II. Andante espressivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa29f9a21503105fbabf951f2595835e235198134e29879e89ab228f6cf888a54. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/CALC41501202.
Violin Concerto No. 2 in C Major, Op. 58: I. Allegro moderato e maestoso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd19099b1411130ae5b6b6688e451756826337ef897e485c14361c8bd22c348f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CALC41501204.
Violin Concerto No. 2 in C Major, Op. 58: III. Allegro scherzando quasi allegretto – Allegro vivace
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12c192fc7b02a4aca4d1b61926319fd2be649a81f7d16d61e1ab10d222c3c3b0. 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/CALC41501206.
Violin Concerto No. 3 in B Minor, Op. 61: III. Molto moderato e maestoso – Allegro non troppo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f53aa4ddb8b7d7024fdfc76b4c53c5407c5697dba9f79e8a0d0e21ca9fbc8dd. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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/CALC41501209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb414b0e9e6bc9878ae0afaf1c7d3272bc9f477774c6a8c73a86ebba8dcd9cd23. 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/CALC42200501.
Beethoven: Violin Sonata No. 9 in A Major, Op. 47 “Kreutzer”: III. Presto