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 0x5cb1312490dd6ac9bb9319ee73d83db016de9a2c18cdebdae92499d3fcc73c11. Chain 2 (Bitcoin): anchored in block 954588 (2026-06-20T19:15:05Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b838584c-d049-4f42-b177-fff563a923a7.json and https://artists.proofprofile.net/proofs/artist/b838584c-d049-4f42-b177-fff563a923a7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Lohengrin, WWV 75, Act III: Treulich geführt ziehet dahin (Ladies, Men, Women)
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 0xffbe1227fc6460b267a2b3563761ad3f87284f5f38272678cb7b5c503088fdb2. 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/NLE421101028.
Lohengrin, WWV 75, Act I: Seht hin! Sie naht, die hart Beklagte! (The King, Elsa)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4f92f29fe766458b919f304d5df3501c8baea1655c9991a0aea46ce5e200cca. 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/NLE421101004.
Lohengrin, WWV 75, Act II: Welch ein Geheimnis muß der Held bewahren? (The King, Ortrud, Friedrich, Lohengrin, Elsa)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc79f68d58e4b83de9c9e1e90ce30ee80d2683f90f567766244e5bf86b810ab35. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/NLE421101025.
Lohengrin, WWV 75, Act II: Elsa! (Ortrud, Elsa)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79f7f58aa0a96ab3e23a7bc418bb0a7a5cb9ffaaf5ce02ca69da1bd93ac07654. 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/NLE421101017.
Lohengrin, WWV 75, Act III: Weh, nun ist all unser Glück dahin! (Lohengrin, Elsa)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec9fe6260a7a3fe08f6c78700991bc0e8745930bd6d744a3b5919b22061e5f37. 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/NLE421101033.
Lohengrin, WWV 75, Act I: Nun sei bedankt, mein lieber Schwan! (Lohengrin, The King)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83138d1a0ae9deedcc8ac39ab68d3ce200367abb6f711fb85d228ced12ea34e4. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/NLE421101008.
Lohengrin, WWV 75, Act I: Zum Kampf für eine Magd zu stehn (Lohengrin, Elsa)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63842598b8f878b37e9b66d5609137b6fec6adf30ea8ad4259a2950f5358b3f2. 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/NLE421101009.
Lohengrin, WWV 75, Act III: In ferner Land, unnahbar euren Schritten (Lohengrin, The King, Men, Women)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41ccfc0d8bb829f70a45729141712e9be7e0fc567677e8bbfa5fc5eec67ee1e6. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/NLE421101036.
Lohengrin, WWV 75, Act I: Durch Gottes Sieg ist jetzt dein Leben mein (Lohengrin, The King, Elsa, Ortrud, Friedrich)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24ab2e8664bb137d989c3fe3d1e949e248cbecd6aafba4987582de6c853945f2. 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/NLE421101012.
Lohengrin, WWV 75, Act I: Hört, Grafen, Edle, Freie von Brabant (Herald, The King)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x961ad4fed132e18853daaaf743f80b9663ef661b535466afe0d4b155391ca16a. Chain 2 (Bitcoin): anchored in block 960175 (2026-07-30T00:16:15Z), 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/NLE421101002.
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
Lohengrin, WWV 75, Act I: Dank, König, dir, daß du zu richten kamst! (Friedrich, Herald, The King)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7351248aa6d974f70f5d6d66ca5777a5a453c6f6a8e2090b1b65f147cd2de534. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/NLE421101003.
Lohengrin, WWV 75, Act I: Mich irret nicht ihr träumerischer Mut (Friedrich, The King, Elsa)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb76dd8fc12f8f363522d1d9ba4fde1afa13c6c7848826da97c17127e18211c48. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/NLE421101006.
Lohengrin, WWV 75, Act I: Wer hier im Gotteskampf zu streiten kam (Herald, Friedrich, Elsa)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fce260c802728b56dcdec01c0222fd2c787f2523c15d5595b54e9a113710628. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/NLE421101007.
Lohengrin, WWV 75, Act II: Des Königs Wort und Will' tu ich euch kund (Herald, Four Nobles, Friedrich, Four Pages)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eceda2db8d8bdad07cf460f5c9f0eace8660f449767929c0289503c38ac3cda. 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/NLE421101021.
Lohengrin, WWV 75, Act I: Nun höret mich und achtet wohl (Herald, Lohengrin, Friedrich, The King, Elsa, Ortrud)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3615a06c20dfccd6b989357152ef04f2102ee872fd5d51b5e1482d5207f570cc. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/NLE421101011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa6a740d0a4504ef76bbb18f8490b143564d415729e7e35e9eb953effe6e063f. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/US6R21452447.
10. Festliche Operngala für die Deutsche AIDS-Stiftung