thumb|upright=1.25|Welser-Möst conducting the New York Philharmonic (27 February 2020) Franz Leopold Maria Möst (born 16 August 1960), known professionally as Franz Welser-Möst, is an Austrian conduc
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 0xbc309cf2c5ebe6f4c8e102235d813c757e3c67652cc6b6548df1630c3b1ef361. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/608dc943-12f5-40d9-a1f8-5a34b5acfefc.json and https://artists.proofprofile.net/proofs/artist/608dc943-12f5-40d9-a1f8-5a34b5acfefc.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Liebestraum No. 3 in A-Flat Major, S. 541/3
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 0xa8aa7c2a25a0fc4fb0cbd6e288f6570a38b4d59cbe8385d77df45410537a43bb. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM12202666 — a six-check JSON result.
Tristan und Isolde: Prelude (Arr. for Solo Piano by Zoltán Kocsis)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75ff7cac4caf0aebcf3c11aed234952b307a6243995f593ea37bf5096a6bead9. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM12202674 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf752f15fa36f6886ab8aae3093d64d87a3b299d3f1669beabb41a7973945a731. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM12202668 — a six-check JSON result.
Symphony No. 10: Adagio (Arr. for Solo Piano by Ronald Stevenson)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x039f122197be22b99e7983bb1041350f521a3af96a4c0a2c4b1abe26ee660160. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM12202675 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae554dff18a3f4afbda2e51715d3dd0c3498d9a84b711b37db8c28821ab7e5ce. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM12202669 — a six-check JSON result.
Transcendental Études, S.139: XI. Harmonies du soir
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1459e015f0f56a8879de8a56ea70ae077db0ee9fe0fcb9d9f41a70d32e3414d. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM12202676 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bc27fd17e506f22d5dbc180c13c703f03a8243afa93d2deb2bb016be1a56475. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM12202670 — a six-check JSON result.
Einem: Philadelphia Symphonie, Geistliche Sonate & Stundenlied (Live)
Johan Botha: Wiener Staatsoper Live (1997-2014)
The Peace Concert Versailles (Live at Versailles / 2018)
Die Zauberflöte, K. 620: Overture - Live at Versailles / 2018
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x924aaead7f5d55d3975806d9a27959af1b1e4e2f8337d9b66f89e332ca1f1553. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN961803150 — a six-check JSON result.
Nocturnes, L. 91 / III. Sirènes: Un peu plus lent - Live at Versailles / 2018
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fee4280675d899cf774209b1b90a6f77b5eb6a3005481f36733faf999452769. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN961803162 — a six-check JSON result.
The Planets, Op. 32: I. Mars, the Bringer of War - Live at Versailles / 2018
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29fa1dd6701d722007432f988477690d0047ae7d4570319133108ac79c4fff9a. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN961803170 — a six-check JSON result.
Stravinsky: Le Rossignol, Oedipus Rex & Renard
Walker: Antifonys, Lilacs, Sinfonias Nos 4 & 5
Mendelssohn: The Hebrides, Op. 26, MWV P7 "Fingal's Cave"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x460b89975ffe29c7eeebe434381100a19d4e9f9d904c53f6d14a68696744c343. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC8800268 — a six-check JSON result.
Bruch: Scottish Fantasy, Op. 46: II. Scherzo. Allegro - Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1356ccb096e6d59ee79361c313d465265cc89c7f03456c3046aa8f7bda96045. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEA341100267 — a six-check JSON result.
Mozart / Compl. Beyer: Requiem in D Minor, K. 626: VIII. Lacrimosa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cb0c52f967afe7c55bd50b081f191e69dcf1f582ebad2b87ce725e8b99e8c66. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYD8900809 — a six-check JSON result.
Requiem in D Minor, K. 626: III. Sequenz No. 6, Lacrimosa
Classical Overtures for Sadness & Heartache
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfedfbf20d2deb6fab8d5ec435452a605b273c858d52e0b2374587e79b7c6203. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYD8900646 — a six-check JSON result.
Weber: Variations on a Theme from Silvana in B Minor, Op. 33, J. 128: Thema (Arr. Schottstädt for Clarinet and Orchestra)
Deutsche Klarinette. Brahms, Mendelssohn, Beethoven, Weber...
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb42bf6d2d22e69b5bf491af8f6cf0ea89bd4728780760bc088b7deaa2942b87. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEA349600307 — a six-check JSON result.
Weber: Variations on a Theme from Silvana in B Minor, Op. 33, J. 128: Variation II (Arr. Schottstädt for Clarinet and Orchestra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa8b92e2850639daaa454febec0af38f88b17dd834ca07aad3a5c9b3076e9d17. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEA349600309 — a six-check JSON result.
Mozart: Divertimento No. 17 in D Major, K. 334/320b: III. Menuetto - Trio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x908a5e23ea998286579abca14130b76b32fa2c78ec947c538f0f1676c9712570. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC8901079 — a six-check JSON result.
Requiem in D Minor, K. 626: III. Sequenz, Lacrimosa dies illa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfedfbf20d2deb6fab8d5ec435452a605b273c858d52e0b2374587e79b7c6203. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYD8900646 — a six-check JSON result.
Mass No. 19 in D Minor, K. 626, "Requiem": VII. Lacrimosa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cb0c52f967afe7c55bd50b081f191e69dcf1f582ebad2b87ce725e8b99e8c66. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYD8900809 — a six-check JSON result.
Requiem in D Minor, K. 626: III. Sequenz, No. 6, Lacrimosa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cb0c52f967afe7c55bd50b081f191e69dcf1f582ebad2b87ce725e8b99e8c66. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYD8900809 — a six-check JSON result.
Symphony No. 4 in A Major, Op. 90 'Italian': III. Con moto moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd02125445fa5268a4d5d5c8ee49d8da5261372987332a1ba3f34877ab7f9502d. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC9202687 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bae76d2ad1d730d100b7b652f35365fdfac907bb65ec2e51ab9ac40030f7052. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC9001120 — a six-check JSON result.