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 0x0df3465bc97c84bf5eccc370adac53ba1a166c8d837e3637e618c385af51e26f. Chain 2 (Bitcoin): anchored in block 953727 (2026-06-15T02:33:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8f0d2b4b-9f5e-409c-8327-876c6434b996.json and https://artists.proofprofile.net/proofs/artist/8f0d2b4b-9f5e-409c-8327-876c6434b996.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Lohengrin, Act III Scene 3: Morgenröte – Heil König Heinrich! – Was bringen die?
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 0x00e3c48eee58a5aca638c81d70424a9fa8580331099b5bddb1d2aa01764b6d35. 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/GBF078542234.
Lohengrin, Act II Scene 3: Des Königs Wort und Will' tu ich euch kund – Nun hört, dem Lande will er uns entführen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5e98d3078c8de9554d3f180188637f6cfeaaca344797efc029396d9d4f6abae. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/GBF078542221.
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
Die lustigen Weiber von Windsor (The Merry Wives of Windsor): Overture
Nicolai, O.: Merry Wives of Windsor (The) [Opera]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6097bc3a0ac4f0f39be56562a4444dfe6a92d8c8bb14c9809240c14d5daa2cb0. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/DEB260300117.
Die lustigen Weiber von Windsor (The Merry Wives of Windsor): Act I: Duet: Nein, das ist wirklich doch zu keck! (Frau Fluth, Frau Reich, Herr Fluth, Herr Reich, Junker Sparlich, Dr. Cajus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9aa8d916702c51c5b57867b165e94080ab3b2a4adfb60198d37f191b431bfcb. 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/DEB260300118.
Die lustigen Weiber von Windsor (The Merry Wives of Windsor): Act I: Recitative: So geht indes hinein (Reich, Sparlich, Cajus) - Duet: Eure Tochter! (Fenton, Reich)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd687d8fe5bb2806d5603670f49688185cc7b13e7a2ef8f077925d85337f6db6. 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/DEB260300119.
Die lustigen Weiber von Windsor (The Merry Wives of Windsor): Act I: Recitative and Aria: Nun eilt herbei, Witz, heitre Laune (Frau Fluth, Frau Reich, Falstaff)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd742d132a30dfd7e477fd77e795cb475c3293036bf3ad9f753eed1258fd4a0d4. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/DEB260300120.
Die lustigen Weiber von Windsor (The Merry Wives of Windsor): Act I: Finale: So hab' ich dich errungen (Falstaff, Frau Fluth, Frau Reich, 2 Servants, The Servants, Cajus, Sparlich, The Public
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fffc6b8380bd11f60d77f6d433d2969d035c344c7bfa4c28f35b0f88b2d4e79. 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/DEB260300121.