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 0x2d8fb7b2d118c539911efedb9a53961d2f627e07931e8185bee8b8cc48e07247. 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/24b1adb9-e5b9-49e3-9058-c466e4bcd26d.json and https://artists.proofprofile.net/proofs/artist/24b1adb9-e5b9-49e3-9058-c466e4bcd26d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Strauss: Don Quixote, Op. 35 - Lalo: Cello Concerto - Saint-Saëns: Cello Concerto No. 1, Op. 33
Strauss, R: Don Quixote, Op. 35: Variation I. The Adventure with the Windmills
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 0xf8cd54c9ac85f4a07a846c2b8976f7bc8d88192e65573f9c7c4b29fecbf3695a. 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/GBAYC2200219.
Strauss, R: Don Quixote, Op. 35: Finale. Don Quixote’s Death
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbf04d16eed571d28ccd059940e1264d05493a12ebc72b7f4654d487fe44d765. 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/GBAYC2200229.
Lalo: Cello Concerto in D Minor: I. Prélude. Lento - Allegro maestoso (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02b373302f4a919891e6f9d511696a0be8694c205ed7debaa2ba262913112a90. 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/GBPFW2200048.
Louis Kentner plays Brahms, Bartok, Walton, Balakirew, Dvorak et al
Messiah, HWV 56 / Pt. 1: 1. Accompagnato: Comfort ye, My people
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa99f056e78aecfb25fbeaf64ed9aaa2f6d000a6ebf4da36212b33a244cc24f32. 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/GBF076141702.
Handel: Messiah (Adrian Boult – The Decca Legacy II, Vol. 2)
Celebrating 50 Years Devoted to British Music, Set 2: Gordon Jacob to William Wordsworth
Vaughan Williams: The Pilgrim's Progress
The Malcolm Arnold Edition, Vol.3 - Orchestral, Brass & Piano Music
The Stars Were Shining, Vol. 2 (1936-1953)
Vaughan Williams: The Lark Ascending (Excerpt)
The Most Peaceful Classical Album in the World...Ever!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x519ac9aa5c1549c33e9e1db2a4997ce4e91934fa03267aef1121274b80339476. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBAYC8700828.
The Lark Ascending (Opening) - 1987 Remaster
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x519ac9aa5c1549c33e9e1db2a4997ce4e91934fa03267aef1121274b80339476. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/GBAYC8700828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc33fd2bb5890753b0680ec95330354ebc6eb488b5680be9d663e45945932241a. 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/GBAYC8701434.
Vaughan Williams: Fantasia on a Theme by Thomas Tallis (Excerpt)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0df602e6e2a99b621148de8b5ba511ca2a0ce9463a8a7a33cfd02eb3804c4af6. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/GBAYD8500285.
Elgar: 2 Chansons, Op. 15: No. 2, Chanson de matin (Orchestral Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26d9ce330044fe55441368e6cfc5094e9f63ccbf7fffbfab1235613bd228d967. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/GBAYC8501048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ea29a6876047b8710635e62581441d9516467197445782c29a95e95d534b1f3. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/DEF055909620.
The Great Cello Concertos: Dvořák, Schumann, Saint-Saëns, Elgar, Haydn...
Strauss, R: Don Quixote, Op. 35: Variation II. The Battle with the Sheep
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20efb14f887d856dc2e0be2f66173bcd10f3f5a7153351ebce251f5578d0e86b. 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/GBAYC2200220.
Strauss, R: Don Quixote, Op. 35: Variation IV. The Adventure with the Pilgrims
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2089ccfa303d8268912a0e3fb86adc8c4f126cc3716dcbf41f798c293dda389c. 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/GBAYC2200222.
Strauss, R: Don Quixote, Op. 35: Variation VI. The Meeting with Dulcinea
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c820a087be145d74f8f89d6f334a9b418e47dca22e34c4183faa3a7c44c2dbc. 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/GBAYC2200224.
Strauss, R: Don Quixote, Op. 35: Variation VII. The Ride Through the Air
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x705b269154b2d53a474731010fa6766d7ed1e1cba396a0f3e060e0f32fb92f00. 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/GBAYC2200225.
Holst: The Planets, Op. 32: II. Venus, the Bringer of Peace
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb61d1be9ccc7723b06e4daa7aa8f1b3b9196af22805d6512b44472f3e127090c. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/GBAYD8700032.