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 0x5dcc6ecb176c5d69b73ee563a4939a45eba992cffcda9cc1f2aaece68ab5e3c1. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ed29015b-980b-4144-9c61-afe5429d3d30.json and https://artists.proofprofile.net/proofs/artist/ed29015b-980b-4144-9c61-afe5429d3d30.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Die Rheinnixen: Komm zu uns und sing und tanze, "Barcarole" (Arr. for Soprano and Chamber Ensemble by Wolfgang Renz)
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 0x1e775dc3b46cb8e4106903d9f6795013a1fc06f399a1dc7601f6c5331d4c195d. 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/DEE862200922.
La filleule des fées: The Pink Fairy (Arr. for Chamber Ensemble by Wolfgang Renz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a078dacd03e11ceaaa08f01f6bac9369104f3283aa05a14f18a6d4a892a615f. 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/DEE862200924.
Lamento della Ninfa, SV 163: Amor, amor (Arr. for Soprano and Chamber Ensemble by Wolfgang Renz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x296640f6f1b47d1a6ddc2056765fe238fd4d48f772ea1ab59ec5daba158d65dd. 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/DEE862200926.
Neue Liebe, Op. 19a, No. 4/ MWV K 70 (Arr. for Soprano and Chamber Ensemble by Wolfgang Renz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe36bf71b1c9ac64e96725ebb30024bf04d1982b1d8ac3bcb85ada4e260f93c1c. 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/DEE862200931.
Peer Gynt, Suite No. 2, Op. 55: I. Ingrid's Lament (Arr. for Soprano and Chamber Ensemble by Wolfgang Renz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c5da2cdf3a8b8ad8b798577de2e74cbdbefbde5e478c475c91e4487bdba013e. 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/DEE862200935.
Peer Gynt, Suite No. 2, Op. 55: IV. Solveig's Song (Arr. for Soprano and Chamber Ensemble by Wolfgang Renz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc81edaba8c529e6259cf43ba2d69ae3d59f1abaafff23e85870f7110a2b395af. 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/DEE862200938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x296640f6f1b47d1a6ddc2056765fe238fd4d48f772ea1ab59ec5daba158d65dd. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE862200926.
Rusalka, Op. 114, B. 203: Song to the Moon (Arr. for Soprano and Chamber Ensemble by Wolfgang Renz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5915fd1eb84017e1704b93312aa47acb383f4987f0d94da299a14fb9c2479bba. Chain 2 (Bitcoin): anchored in block 960200 (2026-07-30T02:37:10Z), 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/DEE862200921.
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
Cendrillon, DO 5: Ah! Douce enfant (Arr. for Soprano and Chamber Ensemble by Wolfgang Renz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed6c9a57bcd362f3d82e3538c689905f1672fd3e910cf046a2443a0da55ee029. 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/DEE862200923.
Falstaff: Ninfe! Elfi! Silfi!...Sul fil d'un soffio etesio (Arr. for Soprano and Chamber Ensemble by Wolfgang Renz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89d87146fae26a643e4e0e2408a0c5b63f5aaf5baec93406628b9a93258d76b4. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/DEE862200925.
The Fairy Queen, Z. 629: O let me weep ever, ever weep (Arr. for Soprano and Chamber Ensemble by Wolfgang Renz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1e19e27865d3f0ad2182ece19ac845e70d073207f73936e8e55945ef1eb5d44. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/DEE862200928.
The Fairy Queen, Z. 629: Turn then thine eyes (Arr. for Soprano and Chamber Ensemble by Wolfgang Renz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c265acc624d97f2506a6c9d006520b0540072f3817c3b43de92a2305129dc8b. 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/DEE862200927.
A Midsummer Night's Dream, Op. 64: Be kind and courteous to this gentleman (Arr. for Soprano and Chamber Ensemble by Wolfgang Renz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f2f3aeaf4801898870afab23bd5caa754e68c21ac27d2b4ed27e6d6dc536204. 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/DEE862200930.
A Midsummer Night's Dream, Op. 64: Come, now a roundel ans a fairy song (Arr. for Soprano and Chamber Ensemble by Wolfgang Renz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b30e70eeb367013b957650ea22f13a307ac129c10c0ba1a7e0fc88256bd07be. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/DEE862200929.
Peer Gynt, Suite No. 2, Op. 55: II. Arabian Dance (Arr. for Chamber Ensemble by Wolfgang Renz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9be1e7ddb1cc44b520d6ae21ce02e773e1c1afbff7385b5c588afa5792a94210. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/DEE862200936.
Peer Gynt, Suite No. 2, Op. 55: III. Peer Gynt's Homecoming, Stormy Evening on the Sea (Arr. for Chamber Ensemble by Wolfgang Renz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecf4abb151b112e157c0c91bcbb5e9b28af87f1293365f95ff3175b8f969d44f. 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/DEE862200937.
Peer Gynt, Op. 23, No. 26: Solveig's Cradle Song (Arr. for Soprano and Chamber Ensemble by Wolfgang Renz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6df880760efba334588e2a49456cf193c43e33478f2b3386ecaac7a7ec354991. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/DEE862200932.
Six Songs, Op. 25, No. 2: A Swan (Arr. for Soprano and Chamber Ensemble by Wolfgang Renz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc786022e7740c6f788666693ff6ecb7205a53177540220387f6e49d800e91383. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE862200933.
Die Rheinnixen: Alles hüllt sich in Dunkel (Arr. for Soprano and Chamber Ensemble by Wolfgang Renz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36d25f7a372f385051ff760a8b61b8dd7a1fa3af3de4f8eb064dd169a48061e4. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/DEE862200939.