Christian Pollack is an Austrian classical conductor. Biography and career Pollack was born in Vienna, Austria, in 1946, where he studied violon, viola, piano and composition at the Conservatory an
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 0x99fae7ba9b56caf1b735d301e0b1486aff3a356751a5d38bf625867b8c0ef3d2. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c4a7ca40-0122-4370-abf8-b2fc22f0457a.json and https://artists.proofprofile.net/proofs/artist/c4a7ca40-0122-4370-abf8-b2fc22f0457a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x2b4916f4b1d09f787c3f90a0da6a903dd24fffa3a4c0fe4a684d5a35f137d32f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/HKI191310505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x610a58dd50f75bbf59017097bbea1829067a4146cf9002bacd14e4aeed1b92da. 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/HKI191310508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1461c6814ff7415f16a8f4c3c4e027ab1ce3112bf4a227317954f7e8ae1c7419. 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/HKI191310501.
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
Landes-Farben (Schwarz-Roth-Gold), Walzer, Op. 232
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabc0fe1bd00d29bec119c8242bcf729bd10ae05fae7f04799e78a4b8853b7d16. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/HKI191310502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57b01474024358efa5717fd55983abb3b34be28467c20b495dc456f9efd5dc7d. 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/HKI191310504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x219ccc2997b7beefa9e0de8a72999ce6a62aee30ad4e4bc45608824d56a6050f. 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/HKI191310506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbebb1fe205e4b2fa348811b3f1dde27c58f124544bd6fea0008c99a2edcfd936. 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/HKI190850607.
20 Years Of Classical Music: Naxos Anniversary Collection (Naxos Denmark)
Lakmé: Blumenduett (Lara Croft Tomb Raider): Lakme, Act I: Dome epais le jasmin, "Flower Duet"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e95f2c95be7ce4a824c9e8de3b7cb011289a7c00f813dd7af4a16bd3be69dfa. 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/HKI190110703.
Opera Without Words - The Most Famous Overtures, Preludes, and Interludes in Opera
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e0e5dee11ee912ef295071282d122edce1a71a79d99b27b4e63143d5eefb7bd. 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/HKI199927401.
Orphee aux enfers (Orpheus in the Underworld): Can-Can
Slovak State Philharmonic Orchestra, Kosice
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7341b2a8224cf5729af14ecd07026ccba723ecd71f1cbd8dff71310907903006. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/HKI199228501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fdb5570349bf222c836ea101940a655349af37dee76ad216892a235665a6dd1. 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/HKI199927408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf40a6ac6c0e96c2bec83381cdbf0be2dba3e77feefa6f0770e898f55d510b9a1. 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/HKI199927402.
Eugene Onegin, Op. 24: Act III Scene 1: Polonaise
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34f0275b5fdeb327b9de49ad5a5d5b3bef6549970e6120731f889d4d856ffc75. 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/HKI199228512.
La gazza ladra (The Thieving Magpie): Overture
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d7a91741ec1d3210e9b00c38d54d6f34795b623ef5e23f8500e25f3ff55284b. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/HKI199296401.
Eugene Onegin, Op. 24: Act II Scene 1: Waltz
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fe29562b1e422298883e1714bf588f323536f7190d7376a18611139e9334186. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/HKI199228513.
La Gioconda, Act III: Dance of the Hours
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9993be06d14aa8766c682cebb096291b416741ad12d2fc163f7f7a3e839c4193. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/HKI199927417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ec37215a84b6aa426d1bd862fd27b85c3491f67d6cc2920480689bfc6f3c82c. 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/HKI199927409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x098373dfd69eea51f9907583e05d01af55457c14b9c8e02a8df1075a2b4ce126. 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/HKI199332007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6221ae97938b52d128949a97cf5a0bc4d8139e79bd2a5f702cbc85d2132d54f. 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/HKI199927415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x954ad55265b35f40633b034b2e09e564926e40b1d8471dd09b5025c877234261. 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/HKI199242001.
Le nozze di Figaro (The Marriage of Figaro), K. 492: Overture
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4d7d44aae6ec0ffe1ae0af69500d98fe0dffc6934c01fb3740d107d6b1b63f7. 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/HKI199611201.
Il barbiere di Siviglia (The Barber of Seville): Il Barbiere di Siviglia (The Barber of Seville): Overture
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cc1e70688095f26f65504e6d20cc25bf477e835baec23f28fe625d306ce1511. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/HKI199296402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ad6c27b538b18c2d63f0934eebcf1e5b469705c1110cdd304aabe05527e8c41. 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/HKI190525507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25607a077016881eb93eb136ea92d746ebcd4c7c9fe460e52bec222ca2bed8cd. 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/HKI199228516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6647cc1c461852723aa84159961c309dc5449bffc62e7d3ebd19513256acfa4. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/HKI199296408.
Les contes d'Hoffmann (The Tales of Hoffmann) (arr. for orchestra): Les Contes d'Hoffmann (Tales of Hoffmann): Barcarolle
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3a8c983f5532a2d359f7f734edaa265e9648e78e089c75020b6b6cec6d965c5. 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/HKI199927413.