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 0x58e19c16dfd9c9852576b8a1fee8b3f54a6915703c3f3c79d637045814da61bb. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4ecf817e-4e2c-46ed-aa95-3ac006a0ee57.json and https://artists.proofprofile.net/proofs/artist/4ecf817e-4e2c-46ed-aa95-3ac006a0ee57.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Das Rheingold, WWV 86A, Scene 1: Vorspiel
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 0xb4927612123960ff2aa959e5982e1ebd65844c6d0497f22840d62e6ab299434d. 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/HKI191518501 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09a0ce85773bb71f46787ffa1e42d05215d85ef3e4323355a3311345f964cfed. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BEE641945401 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x603d2785ef639877f9e66290a66b6f41266b95843b9fae6bfc187630a8001019. 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/BEE020291201 — a six-check JSON result.
Passion, BWV 245 - Part Two: No. 15 Choral
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddb661a1010d5fec53ffe7e51a4d74b6f9f78989378344e74c3c8366de2cf50c. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/BEE020291221 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0527a4e1977e4684dce343ef7ef1891e3ce657edb2c9fcda64561b411cf39c0b. 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/BEE020291202 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4106ea5f72d407b03637353b4ed8da4b78c393892ccaac82ecadf2167b7c08f5. 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/BEE020291222 — a six-check JSON result.
Passion, BWV 245 - Part Two: No. 16b Chor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ea4f2fdcf167c1cfca245fd32134b5ecd4452e40fbec6c1014d3f2c874cdf07. Chain 2 (Bitcoin): anchored in block 960177 (2026-07-30T00:21:01Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BEE020291223 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dd6b8967a17fdd3df27e50709a00ae8c8c471a0de6a7b194e56f0b43f26caa2. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/BEE020291204 — a six-check JSON result.
Passion, BWV 245 - Part Two: No. 16d Chor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x728d84a92fd73e45e6d645b8fdc5cdba22f7059af1a72134050587d2c2e958b9. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BEE020291225 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3737821eee0c5e254cf483d622768f290ea25a93b34917a61a3d9e68f248c01b. 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/BEE020291226 — a six-check JSON result.
Passion, BWV 245 - Part One: No. 3 Choral
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84b7a5294c466e8948e22978d0a46d00f209ff1a7d427836b76aca02b6b96d35. Chain 2 (Bitcoin): anchored in block 960218 (2026-07-30T06:57:05Z), 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/BEE020291207 — a six-check JSON result.
Passion, BWV 245 - Part Two: No. 17 Choral
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2d386039bef581e9359ad0ae7d5736f65aa12fb3d1e3b26261e5b46b1f43947. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BEE020291227 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb151318f73778b6949a18d723cb436f9df5e52109b1bf79c7142fcec264926b6. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BEE020291208 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaab029c2e9f922b1035b26a102102fecfeaf1de34cf883a8877d14d2f609a7f4. Chain 2 (Bitcoin): anchored in block 960277 (2026-07-30T16:10:47Z), 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/BEE020291228 — a six-check JSON result.
Passion, BWV 245 - Part One: No. 5 Choral
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f544f10b1e72c9bc9c50fc1f317cc3485d1087c088a16968bee6fa73650994f. Chain 2 (Bitcoin): anchored in block 960167 (2026-07-29T23:42:34Z), 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/BEE020291209 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8632092ca6cd59eecb91e1f5febfc71505e31b690d30568fb288603948c6a72b. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BEE020291210 — a six-check JSON result.
Passion, BWV 245 - Part One: No. 7 Arie (Alto)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61069e0612da209fa95a830297b1b7b2cba1677d12707ef13f17ed9e65936776. 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/BEE020291211 — a six-check JSON result.
Passion, BWV 245 - Part Two: No. 19 Arioso - Bass
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cc03a3d26f302d4cd1532ed682076b6db6483bd31266a07ca28ac46cc878eee. 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/BEE020291231 — a six-check JSON result.
Passion, BWV 245 - Part Two: No. 20 Arie - Tenor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a51a9271e48ef3206c168aaa348617e5a45104251e851fa242efe730bb8ef9c. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BEE020291232 — a six-check JSON result.
Passion, BWV 245 - Part One: No. 9 Arie (Soprano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9342fa5661563bb6386831e6aa24a84b87358f88981968f618a6642c3b69890. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BEE020291213 — a six-check JSON result.
Passion, BWV 245 - Part One: No. 10 Rezitativ (Evangelist - Ancilla - Petrus - Jesus - Servus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66db12a812272399b4b6f4bf098d0e1d155b8c0279f2cf1ebf4cefc076e428b0. 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/BEE020291214 — a six-check JSON result.
Passion, BWV 245 - Part Two: No. 21b Chor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x933a4f12e328e6220a68a20ea5d91e109e38962dc633cf23ebb13f275b95404b. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BEE020291234 — a six-check JSON result.
Passion, BWV 245 - Part One: No. 11 Choral
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c43799e332f5a840dba284ccabffe4096fdce9ae0023beedc05d2385124388f. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BEE020291215 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc82e9aea078a8669488b712e1f70ff263a87352518ff304b38b1952dd7a0efa6. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BEE020291235 — a six-check JSON result.
Passion, BWV 245 - Part Two: No. 21d Chor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fd280440ccac2d66cd2a7d549a32bfd132388b5e4aa45b2fc0491566f3dfbf4. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BEE020291236 — a six-check JSON result.
Passion, BWV 245 - Part One: No. 12c Rezitativ (Evangelist - Diener)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xced9adc9bff1e768cde23e591effcc1d9e480d3fef8518673666407762a807a1. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BEE020291218 — a six-check JSON result.
Passion, BWV 245 - Part Two: No. 21f Chor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bcb351ec705b42bdd3564969201a97d04822f478d5b9045e5c6f0fbfb7b9f28. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/BEE020291238 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87e89b771bb74634e3904def8d5c9c0784c0551369c477f86f3b7852bb68f0cd. 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/BEE020291239 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05ace2804837b1bcaea948f04249abfbe7132cacbed5bd25b9ee019a075ec9cd. 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/BEE020291220 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x411cc9250212aded4f01943fc2e80ae5e5ca9044bb7010c0f433cac21bea7390. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BEE020291240 — a six-check JSON result.
Passion, BWV 245 - Part Two: No. 23a Rezitativ (Evangelist) - No. 23b Chor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa502c2f819c00b466c8bf291538d3ab43f424f084f7a8f9e31e2f9565117ec08. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BEE020291241 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2775733ca09f9b0889673c7d2f694a4cdbad2c3527ee5198794efff528eda91d. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/BEE020291242 — a six-check JSON result.
Passion, BWV 245 - Part Two: No. 23d Chor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97a7af5ea5ce93f970f3a77add9ae6a0853ef97b32c51333ba99463151106c37. 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/BEE020291243 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1cc1d37c673f1274fb59167e02c8a5ae92d5276283f7a440cfc66f4490e0b9c. 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/BEE020291246 — a six-check JSON result.
Passion, BWV 245 - Part Two: No. 24 Arie Mit Chor - Bass
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e1512dd353070d13fde8e7cddf8890f6efaf6d8c61b6607da4f35984eebbf84. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/BEE020291247 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9272c5c4518b6ffc636445492a2937b68e6aeed793c57c3dd03379f4b30b57af. 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/BEE020291248 — a six-check JSON result.
Passion, BWV 245 - Part Two: No. 25b Chor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8246ca1c9db8a45882a49dcf94f19df5068862a30d0b2d932dacbb0471925a68. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/BEE020291249 — a six-check JSON result.
In Flanders' Fields Vol. 97: De Kinderen der Zee
Ave Maria - Les Plus Beaux Ave Maria Et Chants A La Vierge (The Most Beautiful Ave Marias and Songs To the Virgin)
Ellens Gesang III (Ave Maria!), Op. 52, No. 6, D. 839, "Hymne an die Jungfrau (version for choir): Ave Maria
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f7621dc3eba4dd1cd13ba680e9fc1f76d6a14db7df0a300616ec6355799ac9d. 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/HKI190567009 — a six-check JSON result.
Richard Wagner, Der Ring des Nibelungen, Das Rheingold
Mozart, W.A.: Nozze Di Figaro (Le) (The Marriage of Figaro) [Opera]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6e7ab50132ac98a672cca9a61df12435968db70e83019b853f8491f4cb1dac3. 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/DECP69806001 — a six-check JSON result.
Le nozze di Figaro, K. 492: Act I Scene 1: Duet: Cinque … dieci … venti … trenta (Figaro, Susanna) - Recitative: Cosa stai misurando (Susanna, Figaro)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17969fe33503461705086200e03fcea5a25dcff77b988ba54b5bc1cc29c830d2. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/DECP69806002 — a six-check JSON result.
Le nozze di Figaro, K. 492: Act I Scene 1: Duet: Se a caso Madama (Figaro, Susanna) - Recitative: Or bene: ascolta (Susanna, Figaro) - Scene 2: Bravo, signor padrone! (Figaro)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa25f7f2c54d7ebced7234d9768e9fc23229ad60147ca352cd1c4e365212b371a. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DECP69806003 — a six-check JSON result.
Le nozze di Figaro, K. 492: Act I Scene 2: Cavatina: Se vuol ballare, Signor Contino (Figaro) - Scene 3: Recitative: Es aspettaste il giorno (Bartolo, Marcellina)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbf76eec3711b221776bdcec56b15a56dfd6eb2c2f4b8ef95ee00c9d3acb01c9. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DECP69806004 — a six-check JSON result.
Le nozze di Figaro, K. 492: Act I Scene 4: Via resti servits (Marcellina, Susanna) - Scene 5: Va la, vecchia pedente (Susanna, Cherubino)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf561b8e2eb59ba4a8f1a7bac51d8ed431eff0bba9857b4b78ea15aeb92b6a24. 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/DECP69806006 — a six-check JSON result.
Le nozze di Figaro, K. 492: Act I Scene 8: Aria: Non più andrai, farfallone amoroso (Figaro)
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La Petite Bande (Sigiswald Kujiken, 70th Anniversary Edition)
Ave Maria: Madonna Mystica - Bach, J.S. / Handel, G.F. / Schubert, F. / Bruckner, A. / Brahms, J. / Liszt, F.
Debussy & Fauré & Hahn: Mélodies de Verlaine
In Flanders' Fields 19: Songs and Piano Music by Lodewijk Mortelmans (2019 Remastered Version)
In Flanders' Fields, Vol. 84: A Bouquet of Forgotten Flowers
Pergolesi: Livietta e Tracollo - La Serva padrona
La serva padrona: Intermezzo II: Recitative: Ah! quanto mi sa male di tal risoluzione (Uberto, Serpina)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1694e76ee6db86a9aea53f11884085e1e783783d9bab5270e4055bd81d9e7eec. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DECP69607025 — a six-check JSON result.
La serva padrona: Intermezzo II: Aria: Son imbrogliato io gia (Uberto)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x937b7fb27ac6ab495cfd17d5a398f4cddde429c29341b728e8b9a3c976b929d7. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DECP69607026 — a six-check JSON result.
La serva padrona: Intermezzo II: Finale: Duet: Contento tu sarai, avrai amor per me? (Serpina, Uberto)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94058044a29bee6a5a705ff955eb108a612ef0103cb2cfdd84dfe8ce8cfdc613. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/DECP69607028 — a six-check JSON result.
Fiocco: Missa Solemnis / Ave Maria / Homo Quidam
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Bach - Glazunov - Ligeti - Handel - Bartók: Jacques Pache, passeur de souffle, de beauté et d'exigence, Vol. 3