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 0xdd98773a7d796d15ace1f5acd209af7868a42994d8945430db5711710466397b. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/882e0258-2e5e-4133-a5df-e8e9ea5877d2.json and https://artists.proofprofile.net/proofs/artist/882e0258-2e5e-4133-a5df-e8e9ea5877d2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Grandes Épocas de la Música. Beethoven: Concierto Op. 56, Sonata No. 10 Op.96
Grandes Épocas de la Música. Beethoven: Sinfonía No. 5 y Sinfonía No. 6
Symphony No. 3 in E-Flat Major, Op. 55: I. Allegro con brio
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 0xe49c882d1138eade4c1fb77e18f8b9202a61fd2a1347617d61e2b8fedb87bb73. 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/QM6MZ1445782.
Symphony No. 3 in E-Flat Major, Op. 55: II. Marcia funebre. Adagio assai
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb92324f9be2f0a1662f5993a9a43e78e62baaed1115b2d2b0b4f5a9ad7b259f3. 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/QM6MZ1445783.
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
Symphony No. 3 in E-Flat Major, Op. 55: III. Scherzo. Allegro vivace - Trio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8657c8313444c3d14cba0c8ffd7d0c1b0fae65fd25988006189c55a81fcdc79. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/QM6MZ1445784.
Symphony No. 3 in E-Flat Major, Op. 55: IV. Finale. Allegro molto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebccf3ad54034f4af02fdedb0b980d5552432da5df821fd8e4868488b4fb9c06. Chain 2 (Bitcoin): anchored in block 960167 (2026-07-29T23:42:34Z), 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/QM6MZ1445785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fc38386e326d0e6007dc62f95ff88f46184f59ae98b1f9244ee403601eb059b. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/QM6MZ1445786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7550314764a772875718c700a923fd9862919b17cd4f2aff6aab6b15fd6623bd. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/QM6MZ1445787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x971b2d424a230946fed1e49813153d8e14543edc3098d778fb840e9f23cda523. 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/ES8620804103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71876c51e0d5db0ab8312777a51efe92b6264831ba37a35aa6f2136cfe830a33. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/ES8620804101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c5ba58e647ef3cdf8492e00985ef8f9d32a7d7adc6596f2f409d80746c7dbbc. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/ES8620804105.
Hector Berlioz: Premium Classics. La Condenación de Fausto
El Orfeón Donostiarra en Su Centenario (Vol. I)