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 0x0977ee79d99f7aa38c1615cbde2daf821edb52987f6294f4e3218eaf226ff33d. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/98dbb783-771b-4a15-95eb-56cd09f11adb.json and https://artists.proofprofile.net/proofs/artist/98dbb783-771b-4a15-95eb-56cd09f11adb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Liszt, Verdi, Strauss & Schumann: Art Songs
Songs by Liszt, Verdi, Strauss & Schumann
Christus, S3/R478: Christmas Oratorio: Pastorale und Verkundigung des Engels (Pastorale and Herald Angel's Song) (Soprano, Tenor, Chorus)
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 0xe737d85b1e5711e601125cfd846ffa91340e6eab62ad176fbd62ca445ba5a575. 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/HUA251283102.
Christus, S3/R478: Christmas Oratorio: Stabat Mater speciosa (Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4307224f04ba9ead3d32bc525a78f3a272a58a8124e3b9abed2027a9340ce7ee. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/HUA251283103.
Christus, S3/R478: Passion and Resurrection: O filii et filiae (Women's Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x411dc085f7da318b72bab3abb0834db6412661559f4b33cc965687149b58306a. 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/HUA251283303.
Christus, S3/R478: Passion and Resurrection: Resurrexit (Soloists and Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc97be697b305d8d4afb31673c93c7bdf168e0138d9ec188c418d2a2e9687e3a. 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/HUA251283304.
Christus, S3/R478: Christmas Oratorio: Introduction
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83028b4291e1e2d97b6339d7b114dee0936a1dba67b43e2c5530f9568f50d4ba. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:31:31Z), 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/HUA251283101.
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
Christus, S3/R478: Christmas Oratorio: Die heiligen drei Konige (March of the Three Magi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7795822b9845a8d0350ab7f316f04bf03d19959360525152c9444cad6949d68. 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/HUA251283105.
Christus, S3/R478: Passion and Resurrection: Stabat Mater dolorosa (Soloists and Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9524a785ee9190aff15970ebd49288526e6d312af47786a9439587533fa289d. 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/HUA251283302.