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 0x20776d72b4b846519651c741cfa12e27f1c099c8898b372c079e4d79710222f0. 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/084b1778-0b14-4e37-b3c6-b6b0a73f7e56.json and https://artists.proofprofile.net/proofs/artist/084b1778-0b14-4e37-b3c6-b6b0a73f7e56.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Bach: Mass in B Minor, BWV 232: Et incarnatus est & Sanctus
Siegfried, WWV 86C Act I Scene 1: Zwangvolle Plage! Müh' ohne Zweck! (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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72c1370c46cb973ed3509ecb76ca239033229902f25d3f7e75de8ef14d6d5a23. 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/GB6CE0900107.
Siegfried, WWV 86C Act I Scene 1: Hoiho! Hoiho! Hau' ein! Hau' ein! (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcabd4cecced14345d939cb8809f44f6dcc282fd9595bad67be4d18b0cd0236b3. 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/GB6CE0900108.
Siegfried, WWV 86C Act I Scene 2: Hier sitz' ich am Herd (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd409ab9c9e8e164ca1ad0a1230121338712545799cbf1d521a8293703280b061. 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/GB6CE0900118.
Siegfried, WWV 86C Act I Scene 2: Viel, Wanderer, weisst du mir von der Erde rauhem Rücken (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6039b1a6962c0633eff5de649f9bce5ea9bc934986024946d1515ebb1e81a1bd. 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/GB6CE0900121.
Siegfried, WWV 86C Act I: Vorspiel (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17b17e15334bedcce4144ecaf8877d0b639e6c9abeb4a9ade7def20df4b90cee. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/GB6CE0900106.
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
Siegfried, WWV 86C Act I Scene 1: Halte! Wohin? He! Siegfried! (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d72b1b14c689c51be0f4c3016ae4c98f6ae6c95886c6ccc248acd5367936026. 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/GB6CE0900116.