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 0x16441b71049a9169a4407aec5a52ea3ae28e945d9221e650dea974b0e04a1c14. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1ee599fd-8613-429d-beba-88cb24a54fb0.json and https://artists.proofprofile.net/proofs/artist/1ee599fd-8613-429d-beba-88cb24a54fb0.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 0xf464b526ea477cf0d014ae1ae0f4cf6525b4c329e353be107b455e4be40ebd6f. 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/DEN961303160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x725082de3fec894921e981fd774af2d1a64ad6dbfa9389445b49bd38e56b4645. 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/DEN961303240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc18af002e076127c3aa211352697db4eb592a11ffea29b38687a0c5f76d4a0c5. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/DEN961303070.
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 0x25266992a7bcf33cbb2f12231f90d00954f9f283a5bb6ca321b28275a2d04e38. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/DEN961303210.
Die 50 Klassik-Hits zum Entspannen - Mondscheinsonate - Schwanensee - Symphonie Fantastique - Blumenstück
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01786b2ae3f46ef064c79a2b02de215f2b272d1dd1522a707aa5142ca5656046. 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/DES380013262.
Piano Concerto No. 21 in C Major, K. 467 "Elvira Madigan": II. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa77abea8350da030f2dd3f56e40160e3d3f26977d744fb2568a38ad13390114b. 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/DES380013625.
Suite No. 2 in D Major, HWV 349 "Water Music": II. Alla Hornpipe
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe14a2109c6abc5018680c28084735db81c087ef2153bcdf95995e9229d782fba. 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/DES380620013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf7872e09bdaa9daeaa725f0e12b088aa4cab7a8c6d8246b1461821f9cf85d59. 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/DES380007005.
Concerto for Clarinet and Orchestra in A Major, K. 622: II. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a84e28a4faecaa9fa22b5f01d44e6ba72ac325a8cf22b325a55ca1556662a36. 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/DES380740002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6bff21f56a3f162476098f31f40338c8cf332c0185ce586ba610ee0c2aad9cb. 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/DES380000623.
Overture No. 3 in D Major, BWV 1068: II. Air
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3d1492d8d3a4fb04658f84c7a1f49055862ec3731eb4b9f626991739be49fd3. 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/DES380519101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4287ff937b3531f8ef21b08f29ce7bfc5a4ea4715489304326ada938a4e994b4. 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/DES380519103.
Piano Sonata No. 14 in C-Sharp Minor, Op. 27 "Moonlight": I. Adagio sostenuto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aee11114fba86ca558d629012316f8f6dfb3731376110c72522bfd0e8052da2. 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/DES380519105.
Clarinet Concerto in A Major, K. 622: II. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dc2e95b046e7aaa8473c32d556eacaf16d21417c634eb042d69851742043f34. 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/DES380519106.
L'Arlesienne, Op. 23, Suite No. 2: I. Pastorale
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb78a47cffa6dcebd909c68a926a7675eb1ef23ba82dc2c29b4af2d42d18979b8. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DES380519108.
String Quintet No. 17 in E Major, Op. 13 No. 5, G. 275: III. Menuet
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac226011fcf6ddc6d96a25ca814764b01ceb490b9dcb437a27ff2c85ba9c4534. 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/DES380519109.
Symphony No. 6 in F Major, Op. 68 "Pastoral": I. Awakening of Cheerful Feelings Upon Arrival in the Country
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ad7dcb70e96b28252cf2c7a4b4dad6f203370ea116874b4f4790592f5595888. 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/DES380519110.
Piano Trio No. 2 in E-Flat Major, Op. 100, D. 929: II. Andante con moto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x626ffff467f35ddfb7375ad0cf2abcff623f7e5d62b803ab3e239e2a51c5de68. 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/DES380002464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53b5688a07539aba97f27ed28d9f298a5f480a493fb373ab38fa99786eb3eef6. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DES380002465.
Antiche danze ed arie per liuto, Suite No. 3, [P. 172]: III. Siciliana. Andantino
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fd1bfdc777c959e82d008179f63344d608bf9ef6b67d84872f9d38223b85da7. 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/DES380002350.
Symphonie Fantastique, Op. 14: II. Un bal valse. Allegro non troppo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5488f773ae8de8742d672793d67a16bfbb46fe6dd7d32674046ac4203d90e2ef. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/DEN060801534.
Dokumente einer Sängerkarriere - Dietrich Fischer-Dieskau
250 Minuten einfach mal entspannen (Clair de lune - Mondscheinsonate - Träumerei - Für Elise - Abendsegen)
Matthus: Concerto for Violoncello and Orchestra & Symphony No. 2
Lebendige Vergangenheit - Lorenz Fehenberger
Zauber der Klassik (The most beautiful Classical Works)