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 0x4377bea27df102e151037150deddb83b625ec935f688031019c3f0b43f2a46c6. Chain 2 (Bitcoin): anchored in block 953596 (2026-06-14T06:21:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0a0a3dab-b910-4511-90a1-39ec8cae423d.json and https://artists.proofprofile.net/proofs/artist/0a0a3dab-b910-4511-90a1-39ec8cae423d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Bach, JS: Orchestral Suite No. 3 in D Major, BWV 1068: II. Air
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 0xd38a9777acb37a5e30cd02071a5bbb50c15239de9a6fe13ca983f9aca09c8f17. 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/GBAYD9800383.
The Lion King: Can You Feel the Love Tonight (in the style of Tchaikovsky)
Heigh-Ho! Mozart - Favorite Disney Tunes in the Style of Great Classical Composers
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c7e68a9997fb504251d01596bb90e7a488d9d7a0c3b0a600fbdd922286b1708. 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/USASX0818607.
Traditional: Scarborough Fair (English Ballad)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6e9e503d9604a8d12158dfb50b5ed6b7c4c347fd387cdac260e0711a79ae2d9. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/GBAYD9800378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd38a9777acb37a5e30cd02071a5bbb50c15239de9a6fe13ca983f9aca09c8f17. 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/GBAYD9800383.
Traditional: Londonderry Air, "Danny Boy" (English Ballad)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55115ac38f4e861dd414d3b734647e4e62ff817e008341f7feb860c5c6de0877. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBAYD9800384.
Monti, Vittorio: Csárdás for Violin and Orchestra (Largo maestoso - Allegro vivace - Meno quasi lento - Allegretto)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf83cc24396e918221f97a96f48e2a62e994d2b8bdb336336a64aec7ae0eee5d1. 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/GBAYD9800385.
Gounod: Ave Maria, CG 89a (Version for Violin and Orchestra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97b9c67317ed496252e485c34e7b9fe529526064c1fd775f638a09a913648eea. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBAYD9800387.
Debussy: Préludes, Livre I, CD 125, L. 117: No. 8, La fille aux cheveux de lin (Arr. for Violin and Orchestra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e0282e33e2fba8868dc6821098abd5fa38de37e328e3621e16f4ed4be12dc9a. 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/GBAYD9800388.
Satie / Arr. Kennedy, Lenehan & Messiter for Violin and Orchestra: 3 Gymnopédies: No. 1, Lent et douloureux
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3c8f1e9f667d06e09cb0b1167b9fd1c186b73e7bcee2654539c31ff6c30db47. 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/GBAYD9800389.
Gershwin: 3 Preludes: No. 2, Andante con moto "Blue Lullaby" (Arr. for Violin and Orchestra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5804bad801890c1bf8e21b118da3ac68d18bf50ea8210924678d0d0a39ae6f9. 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/GBAYD9800390.
Mitchell: Urge for Going (Instrumental Arrangement of the B-Side Track of the Joni Mitchell Single "You Turn Me on I'm a Radio")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72dd0a9e5c8a407dfdf6a343cc6290a9d080511cd3d0d1c411ff43f192b4c5a1. 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/GBAYD9800394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3c8f1e9f667d06e09cb0b1167b9fd1c186b73e7bcee2654539c31ff6c30db47. 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/GBAYD9800389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e0282e33e2fba8868dc6821098abd5fa38de37e328e3621e16f4ed4be12dc9a. 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/GBAYD9800388.
Chopin / Arr. Kennedy, Lenehan & Messiter for Violin and Orchestra: Nocturne No. 20 in C-Sharp Minor, Op. Posth.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd2ff0d8e0d2ec74f2c5d75f038b63bec73223dbf2df4945cfa3ec70c5e88e07. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/GBAYD9800380.
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
Satie / Arr. Kennedy, Lenehan & Messiter for Violin and Orchestra: 3 Gymnopédies: No. 2, Lent et triste
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf486b2a01d985a00eff64455a09e66b4eec4895bc0ca9b4eaf3a1000ff5c7ea. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/GBAYD9800381.
Gershwin: 3 Preludes: No. 1, Allegro ben ritmato e deciso (Arr. for Violin and Orchestra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2d9ad5fc7f105f147fe09d8aff200c5750b4102091585250f618b9576589226. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/GBAYD9800382.
Handel: Solomon, HWV 67, Act 3: Sinfonia. "The Arrival of the Queen of Sheba"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b97aea059fcedfa67cdb5e64dc5a367570031a4072732f5851c2408e3e1a888. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/GBAYD9800386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40c9098b66bfcac3f481e3cb8321bd6ed0ad025152f868953bebd09308841f6e. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/GBAYD9800395.