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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb65b50d45a6223535bccc3707c9866d5f2a890bf8ebfbf3f378354e81b2a95d5. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ca5e5c22-1136-4a83-8068-e9f79395ef38.json and https://artists.proofprofile.net/proofs/artist/ca5e5c22-1136-4a83-8068-e9f79395ef38.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Symphony No. 8 in E Flat Major "Symphony of a Thousand" / Pt. 1: Imple superna gratia
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa05a343107ab6f1eb5c5df57734f37aab752374044b5fec2717785cddb4d83e5. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN961930902 — a six-check JSON result.
Symphony No. 8 in E Flat Major "Symphony of a Thousand" / Pt. 2: Alles Vergängliche
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb8040b1bb6a7fe7bec08230c15b2bae8749f32b5cfd87d0bb7bf54072ee4e1b. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN961930932 — a six-check JSON result.
Symphony No. 8 in E Flat Major "Symphony of a Thousand" / Pt. 1: Infirma nostri corporis
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2a699e07047029e6c45657e0e6cb927b26582664372ed319fe80ffa6bfd3045. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN961930903 — a six-check JSON result.
Symphony No. 8 in E Flat Major "Symphony of a Thousand" / Pt. 1: Infirma nostri corporis virtute firmans perpeti
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4113d30c6435bfc29482eda091fcc268a5dc4ba46b648df76d393d0fbb45ee7. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN961930905 — a six-check JSON result.
Symphony No. 8 in E Flat Major "Symphony of a Thousand" / Pt. 1: Accende lumen sensibus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6eb96d0ee218c28bb4bb98ff7b287cfcc7e8bf567f16158bc1fe142ee34795c. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN961930906 — a six-check JSON result.
Symphony No. 8 in E Flat Major "Symphony of a Thousand" / Pt. 1: Qui Paraclitus diceris
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2ae36095d2fa5ae0e0f20c0d02992b337e6ec56cd993706ddab19ed00722180. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN961930907 — a six-check JSON result.
Symphony No. 8 in E Flat Major "Symphony of a Thousand" / Pt. 1: Gloria sit Patri Domino
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x256e0e6c7932ae944bbb35add3151bf4e0538340ab408fcb348c19ac52c51b8a. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN961930908 — a six-check JSON result.
Symphony No. 8 in E Flat Major "Symphony of a Thousand" / Pt. 2: Dir, der Unberührbaren - Du schwebst zu Höhen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ce360662569bdf3f632633f566458587f2725caafe07552e26cadfa03ed09b9. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN961930922 — a six-check JSON result.
Symphony No. 8 in E Flat Major "Symphony of a Thousand" / Pt. 2: Neige, neige, du Ohnegleiche
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe875eb80034c7554b21beb86b0459c36bb0c7437bc1c351cffec34f7e4c03866. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN961930927 — a six-check JSON result.
Symphony No. 8 in E Flat Major "Symphony of a Thousand" / Pt. 2: Vom edlen Geisterchor umgeben
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c74a0ecf2cc1fb3adeebb25e92c03a1c2ce2fad7c5793e9864c950e1605344d. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN961930929 — a six-check JSON result.