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 0x8e452fca3d6d06c256a5f9333c30d323bce65808d724e568e50871c3be515439. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/efa9d69f-6623-4a23-8ade-154ce10ed6ff.json and https://artists.proofprofile.net/proofs/artist/efa9d69f-6623-4a23-8ade-154ce10ed6ff.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Sternstunden Vol. 2: 30 Jahre Symphonieorchester Vorarlberg - Live 2011 - 2015
Clarinet Concerto No. 2 in D Major, MWV6/38: I. Moderato
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 0x1c661bb9d36ac0fb6aff49eecd25f8f60ba08a602afad54ab1b5b0d3137a5a78. 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/NLY330725417.
Clarinet Concerto No. 2 in D Major, MWV6/38: III. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x578c2c29e2b97cfa3304b7aae7c3606259d477516466470d789818931f2975c1. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NLY330725419.
Concerto No. 1 in C Minor, Op. 26: II Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x330ca19835df698378662723929c420d59c0ef962ad0aa407abfcd45a15f9232. 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/NLY331400228.
Concerto No. 1 in C Minor, Op. 26: III. Rondo. Vivace
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0854c0b170a879f5ec3f41672f9586611a3ac0296b785dd8d21682e39b5a9ba9. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NLY331400229.
Concerto No. 2 in E-Flat Major, Op. 57: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46733b9b3c0aa6afe36e211c3bd240beb7c8fc82789b04b00698ca931887bd62. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NLY331400233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd34166902070ea3f874de95b427cddd12bf671f8a2b98ab16272af18a1f6447d. 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/NLY331805039.
Spartacus: Ballet Suite No. 2: 1. Adagio of Spartacus and Phrygia
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x821aebe1a5af761733ee0db2c63c5ecf906da52b24dc6569826d3fc34ba78621. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBF076210121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x203b72781e9890cfb5456180de8971bfa8858e99fed143915bae51dcf075b681. 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/GBF078341401.
Great Composers in Words & Music: Franz Schubert
Wanderer Fantasy in C Major, Op. 15, D. 760: II. Adagio (Excerpt)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfba5504492a946bce073cca84c94ce28210af36ce5adaaa5fa5ae7cb947f4fb0. 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/HKI192335728.
Skona Grona Dagar (Beautiful Green Days)
Concerto for 2 Violins in D Minor, BWV 1043: II. Largo ma non tanto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a5cb6f9704da25241f51e19768e8de39c7cb9b3d6bf2a4a2dc2824ad292befa. 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/HKI199207108.
Canon and Gigue in D Major: Canon in D Major
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98c1d507bcdeb43fd98ec34e68f400efa0209014da98723472fd3c244f32a0ad. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/HKI199202613.
Beyond Beethoven - other music from his time
Symphony No. 9 in D Minor, Op. 125, "Choral": II. Molto vivace
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe28703b8db523e40becf772971be9001dcbf091367f24bc14dab0bc5724999fa. 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/HKI199217102.
Dvořák: Symphony No. 9 - Symphonic Variations
Eggert: Symphonies Nos. 1 & 3, and Incidental Music to Svante Sture
Donizetti, G.: Lucia Di Lammermoor [Opera]
Tchaikovsky: Serenade for String Orchestra, Op. 48; Souvenir de Florence, Op. 70
Tchaikovsky: Serenade for String Orchestra, Op. 48: II. Valse. Moderato. Tempo di valse
Serenade for String Orchestra, Op. 48: II. Valse. Moderato. Tempo di valse
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc72af8909d16055ede6847afd3eec9b1379f7f5deb86be841a8d1e7e7b0d8534. 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/DEF059202121.
Végh: Salzburger Mozart-Matineen 1988-1993
Patsch lernt Zaubern im Zirkus Strawinsky. SWR Young CLASSIX
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6afdc4de2148433cf1e9463043c632c43085ffb9f0c1d7c185ab62074b0c821c. 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/DEQF41316005.
Sternstunden: 25 Jahre Symphonieorchester Vorarlberg - Live 1996 - 2010