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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b5c0a348a6a668b7b9376456c1fa7fde6ebda0d13878070318894afd90e3820. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e986fbff-0474-4636-a61d-0440b32cf9db.json and https://artists.proofprofile.net/proofs/artist/e986fbff-0474-4636-a61d-0440b32cf9db.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Vierne: Organ Symphony No. 1 / Widor: Organ Symphony No. 6 in G Minor
Organ Symphony No. 1 in D Minor, Op. 14: VI. Finale
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36106f897433f0692e29c1e37ba241d08c9ebf6c79a32e9875e8461d6279a97f. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/HUA253134506.
Mulet: Esquisses Byzantines / Antalffy-Zsiross: Madonna / Guinot: Vitrail / Kayser: Kirkeruder
Was mir behagt, ist nur die muntre Jagd, BWV 208, "Hunt Cantata": Schafe konnen sicher weiden (arr. for organ)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8964baf67842f1e93bdc728cabf4759a54b54e67a3bb705848a667268a859ca2. 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/HKI199333914.
Christus, S3/R478: Christmas Oratorio: Introduction
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83028b4291e1e2d97b6339d7b114dee0936a1dba67b43e2c5530f9568f50d4ba. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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.
Herz und Mund und Tat und Leben, BWV 147: Jesu, Joy of Man's Desiring (arr. for organ)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x380fe1607f86db05f8fd1c2750a6069f18b5c5d5184753285c47bcfc9664801f. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/HKI199628006.
A Midsummer Night's Dream, Op. 61, Act V: Wedding March (arr. for organ)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaae4f27771e172a25d0371d6767bf60564dbb9f55bb8ea7fe86bbfc59b83cbda. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/HKI199333901.
Herz und Mund und Tat und Leben, BWV 147: Chorale: Jesus bleibt meine Freude (arr. for organ)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x584db2e45b0cdcac7d9d3687c083b71b9d3822b1b7aab1f33040e1e866b5852e. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/HKI199991013.
Christus, S3/R478: Christmas Oratorio: Pastorale und Verkundigung des Engels (Pastorale and Herald Angel's Song) (Soprano, Tenor, Chorus)
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: 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.
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.