Otto Stransky (15 May 1889 – 23 November 1932) was an Austrian composer. He worked in the German film industry for a number of years. He also composed a number of operettas. He died in 1932 following
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 0xd001416f20f8fa6b56b4a8f2f29392b0d37f3c7d356e10b359e90cf76842fa84. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/78528e1a-728d-4e1e-8767-8181b8b12f35.json and https://artists.proofprofile.net/proofs/artist/78528e1a-728d-4e1e-8767-8181b8b12f35.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Richard Tauber Collection, Vol. 17: Popular German Songs, Vol.1 (Recordings 1927 - 1932)
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 0xe8c7c00db43f1c23bea9e1c1ed55866eba3bde5171c132e3a9790b441bc1ae43. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/DEL111302321.
Chronik deutscher Filmmusik - History of German Film Music, Vol. 2: Melodie der Liebe (1931-1933)
Quick: Quick: Gnad'ge Frau, komm und spiel mit mir
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbab5c2d07fc1bc6b231063c4aeea7c02e1ea786c065abcda535f345e86d04c6a. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/DEL111200098.
The Roaring Twenties (Die wilden Zwanziger), Vol. 4: Das Mädel hat Sex Appeal
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58a3ccd46a80e001119264333cbbedf618311a78c14f9e107aa1ad9ede13be92. 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/CA5KR1936182.
Singers of the Century: Gitta Alpár in Operetta, Film & Opera
The Richard Tauber Collection: German & International Popular Songs, Vol 2 (Recordings 1923 - 1938)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad3e0c548bbb03b72461d6fdcd499f5d4da8255da2d528142a454553e5736a66. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/DEL111400154.
The Golden Era of the German Dance Orchestra: Berliner Nachte, Vol. 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ad7c6152d48713a8b2311dfe8266d944ec21f8f46af9ea39d00435c3e40721e. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/PLA391322001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8153be98eac6a090d636033140eb135493c8b6cedd7d5f0bd7fa3bdf56fb1b8. 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/PLA391322002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96f3eedd765fa53fb79ef4192978b7cf1f0286f9261efbea36056fdcd3876597. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/PLA391322003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab7eeeae26ce33831ce14985c100dc06f0aeb14767767931e9c5d160251f0317. 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/PLA391322004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x857e536440e21059761c1df1daef77057077d48202870ca98a3c92554dc309b1. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/PLA391322005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x506541b3900428b48cbf28f1d9bbe93af97bca0ddb50a4bf1c6c5af4b69bf3cf. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/PLA391322006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92306721e96ee2b7bb003fc4518512a8a2f5893cdc62091c79b5a9ad2724a8d8. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/PLA391322007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf759b047bbea8b70ca6c5ad090f1cfcee0dd4fef0744a2d5968822775bcffcd4. 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/PLA391322008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8af42c5df91d7a913a8c0ddcc00dec482ef206105d023cba6309b7845ecf46e2. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), 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/PLA391322009.
Jeszcze jeden mazur dzisiaj (Ostatni mazur)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb14a10085f224fd737223a67c3b210a748fa019e55ca25fe753689ea89c0f876. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/PLA391322010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bf6019b00655273a18ab6d3643e4bd1ff14e2442d4a10a29959694b95c5500c. 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/PLA391322011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5556fcdf43e9383280784dd0f2291966037a96779a05229baad3c89faabda2c9. 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/PLA391322012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x761192205bab15f29f3945a81bc0890fdd4797ed1b5e17767635fa4095545da0. 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/PLA391322013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bc2c13aaface9d120f9fbb7cf01a109433107be4cbe27f6edbdb5a766de0004. 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/PLA391322014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4116bc6b8ef198c69f318cd278c3259702ce98f3b2408216ed823ebaf6bfbfd4. 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/PLA391322015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x353e7ed2fe327475b5e8966df99ba8922447a9fea95ea5e8ef9f8f2950ff7190. 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/PLA391322016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67723f89ff287237f1331ca817ae249db5a73b8a116e8c92af148fda008733fd. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/PLA391322019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7582099689f0a4c61946b25468337577ec451335eb3232546ab8f075b173889a. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/PLA391322020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fc23807d9880135d6dd0882ca6077f0eb39c671f42953c1af1769941940317b. 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/PLA391322021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d75dc95faa8154820806190e06aced13cd151cfcda098f8e45ef1d7e10416ed. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/PLA391322022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5ebbfd51abe1af77f56d0043f879b0b3bc43f241fc354cf9a7e69d613961ed6. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/PLA391322024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb63b9d92d59854099c5be8fa1bdb421d759a9c26b215ce433078e1b299007fa. 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/PLA391322025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb57fa7d7bb28c995ea1d884e7abc73cc590deb8993d22568941b5bc34e8578bb. 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/PLA391322026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x548855b3ce6c722ad87516dc0b5218db9f661bb4e2eb2da2537c2e4fcf0f9615. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/PLA391322027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf6724da6e9b5e26efd76d9c2f735f73548f9269220e4c4c6a011502454afd0c. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/PLA391322028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x420e1703e0c43aaf7b3b8650fb9e04fb0996bacafc9b48cb87109c549f07e65e. 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/PLA391322029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x608cea55a58a8505692c5b68d00227f2dce7d26bc05ed5bc15f776b1504f9b6b. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/PLA391322030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59dda0aacdcf42ca6267378bb7553d9a0d610f976de1f147ce4baf4e84c1094f. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/PLA391322031.
Schellack Schätze: Treasures on 78 RPM from Berlin, Europe & the World, Vol. 35
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ca2174eccf092123a01a857a5ed804af2f288632e52f13926a8510b38c65959. 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/DEL111901199.