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 0x4a3f0e2eda5071f97e17e702d4fdfcabb0f17fc02d22a3e5dcb9cbfb5d1edf71. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/acc2ae72-b3d1-4325-8542-b7ddd88f9525.json and https://artists.proofprofile.net/proofs/artist/acc2ae72-b3d1-4325-8542-b7ddd88f9525.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Concerto pour harpe en ut majeur: III. Rondeau. Allegro agitato
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 0xef31b9f7f9848f799468d69a31d4a600d65d6fc22934008378932f66b7b5e23b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/CH1261561308.
Anaïs Gaudemard: Solo - harmonia nova #6
The Shire (from "Lord of the Rings", Arr. for Cello, Piano & Harp by Julian Riem)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf62804c685b8c1ae58357bf888fc1b367c615f977e11ec9096d0538627dbfe35. 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/DEE862101081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf62804c685b8c1ae58357bf888fc1b367c615f977e11ec9096d0538627dbfe35. 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/DEE862101081.
Vorrei spiegarvi, o Dio, K. 418 (Arr. for Orchestra by Anonymous)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d907307a712b573d57191898b659fe28172fe9106d17e39a7f283b4826cdb23. 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/GBYDS2400855.
6 Variations on "Hélas, j'ai perdu mon amant", K. 360 (Arr. for Flute & Harp by Anonymous): Thema. Andantino
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd19d2985a19673e58d346be022b8bbce6b50319a85473ddfaafe63785f071faa. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GBYDS2400860.
Choral Hymns from the Rig Veda, Op. 26, Group 3, H. 99: III. Hymn to Vena (The Sun Rising Through the Mist)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8729c02c010cb098717f8e566c943ba5d0bba735abe8ec4ff59062d2a65610f5. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/FRX401300149.
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
Rusalka, Op. 114, Act 1: Song to the Moon (Arr. for Cello, Piano & Harp by Julian Riem)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0702e9614fda561e85a22b8a45c24e6a9ff1c9ac8084f5ac75d175a075de6eea. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/DEE862101069.
Concerto for Flute & Harp in C Major, K. 299: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb03ed6dad19818be77e0d8b2259dcde0cbe92c9035ca81c0ec79caae06482e64. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/GBYDS2400856.
Concerto for Flute & Harp in C Major, K. 299: II. Andantino
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x653b75be4bd1085236f4c3a07f51a10f7a88cf56c92a849d505cba959a87ebbd. 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/GBYDS2400857.
Concerto for Flute & Harp in C Major, K. 299: III. Rondeau. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4fd1d7856b0ef93d25bda1c22302bbc8228d814efac999cb60efb501dd12c8f. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/GBYDS2400858.
6 Variations on "Hélas, j'ai perdu mon amant", K. 360 (Arr. for Flute & Harp by Anonymous): Var. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf638703e0414ef78515ce88c755b6f50c94611aa336b525935c95594364f994d. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/GBYDS2400861.