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 0xfb1c349de09ec162feb0309dd78056f16e8fba5a7a6bfbe3af904a1e7b6a65f2. Chain 2 (Bitcoin): anchored in block 954063 (2026-06-17T07:49:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/471aaace-fbba-4430-9181-838bf06d6602.json and https://artists.proofprofile.net/proofs/artist/471aaace-fbba-4430-9181-838bf06d6602.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Parsifal, WWV 111 / Act 1: "Seht dort, die wilde Reiterin" - Live
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 0x081a1c1b567c77f6bb1397bee23c894e09bd5e9d8b443a25945849f94e6107b4. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/NLA506300565.
Parsifal, WWV 111 / Act 1: "Weh! - Hoho! - Auf! - Wer ist der Frevler?" - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc65b90631f05dcaf4ecfb70606cbc0427b630e07c9b9c995339aafe9c113ac69. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/NLA506300570.
Symphony No. 3, Op. 27, FS 60, CNW 27 "Sinfonia espansiva": I. Allegro espansivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe74ad19d8937a24a38f785ca98aa34d20bc7e21bc7b57afda778ff19e84e242b. 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/USSM11000700.
Symphony No. 3, Op. 27, FS 60, CNW 27 "Sinfonia espansiva": III. Allegretto un poco
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb65747c4fc45d70f57233cbdb788a00fd763390e154fc0d4734338ded0b00971. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/USSM11000702.
Symphony No. 3, Op. 27, FS 60, CNW 27 "Sinfonia espansiva": IV. Finale. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf147d026bbb261e9a5a47809feee040656ada2264aeefde7cb6f75aeaa61245e. 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/USSM11000703.