Rainer Schmidt may refer to: Rainer Schmidt (ski jumper) (born 1948), German ski jumper Rainer Schmidt (landscape architect) (born 1954), German landscape architect Rainer Schmidt (table tennis) (
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 0x89966640ac44326af93fc31a7ba80d282a95d87294a8d6c1cbb6c01e3b5a012b. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/28405911-a69e-4575-b7bc-b99fb8507385.json and https://artists.proofprofile.net/proofs/artist/28405911-a69e-4575-b7bc-b99fb8507385.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Brahms: Violin Sonata No. 1 / Joachim: 3 Stucke / Jenner: Violin Sonata No. 1
String Quartet No. 1 in B flat, H.III No. 1 (Op. 1 No. 1): 1. Presto
Haydn: String Quartets Op.64 No.5 "The Lark"; Op.1 No.1; Op.74 No.3 "The Horseman"
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 0xfc34d0b4f79fd8b55d94b2f5b9660f2ce9d09e2a9d116848372908b54e437b22. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/DEF058802221.
String Quartet No. 1 in B flat, H.III No. 1 (Op. 1 No. 1): 2. Menuetto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb4931496f5d59ee3f8cc99c48795eab07af9a2165f4fc513b153a14704c4b54. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), 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/DEF058802222.
String Quartet No. 1 in B flat, H.III No. 1 (Op. 1 No. 1): 3. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61932c11f557361864b622cf78ceee4bf10ca4fc76f0eaec2515e034e4d32d67. Chain 2 (Bitcoin): anchored in block 960183 (2026-07-30T01:10:20Z), 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/DEF058802223.
String Quartet No. 1 in B flat, H.III No. 1 (Op. 1 No. 1): 5. Presto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5fcb86bd1369d10bace5492fc23c21aa7502a46fdba8f5891795b17b2d8802e. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/DEF058802225.
String Quartet in G minor, HIII No. 74, Op. 74 No. 3 "The Horseman": 1. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6f8d10442da32d69855c10e0ce9d3373c4ae32536de2a048ed5768e84e8453d. 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/DEF058802231.
String Quartet in G minor, HIII No. 74, Op. 74 No. 3 "The Horseman": 2. Largo assai
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ba8d609f540bc4bc035b3ddd874d05e8ef2dcca291f330659d0aaf71f8cd0e0. 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/DEF058802232.
String Quartet in G minor, HIII No. 74, Op. 74 No. 3 "The Horseman": 3. Menuetto. Allegretto. Trio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77167325933451a07823e0ed2ad774a7af4dbaa6253b321b22b863c2c3c8de9b. 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/DEF058802233.
String Quartet in G minor, HIII No. 74, Op. 74 No. 3 "The Horseman": 4. Finale. Allegro con brio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x113f6572631fb3715e10081743a2c41df424a36686d0a4f9dc2b10c4e4070fe9. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/DEF058802234.
String Quartet in A, HIII No. 36, Op. 20 No. 6: 1. Allegro di molto e scherzando
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd364f6e3aa827ca9586df5416f011334649da60d257de4c0543bb848be5ff52d. 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/DEF059303721.
String Quartet in A, HIII No. 36, Op. 20 No. 6: 2. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b19be978c4153fceb6d00f7cdab332d812adc74547959b426b70ffe2965cc05. 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/DEF059303722.
String Quartet in A, HIII No. 36, Op. 20 No. 6: 3. Menuet
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39dde2e5e10b083d086f7f62923c06700cc24954327ca9873ac86d7fec2fc8bd. 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/DEF059303723.
String Quartet in A, HIII No. 36, Op. 20 No. 6: 4. Fuga a 3 soggetti. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa272581720ae3ef4dfb944e92bce437b51114d59c0b42d84b6c34af2490cedb3. 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/DEF059303724.
Vikram Seth: An Equal Music - Music from the Best-Selling Novel
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd364f6e3aa827ca9586df5416f011334649da60d257de4c0543bb848be5ff52d. 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/DEF059303721.