The PKF – Prague Philharmonia (, abbreviation: PKF; literal translation, "Prague Chamber Philharmonia") is a Czech orchestra based in Prague. The orchestra gives concerts in several venues in Prague,
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 0x15de726a78fd1b1e04d88bd1bf8782e3292bd9eb6dc2e256b4b7fc4a10b04d1d. 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/5311336b-6821-407a-b9fe-adcfd6e62f70.json and https://artists.proofprofile.net/proofs/artist/5311336b-6821-407a-b9fe-adcfd6e62f70.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Manon Lescaut, SC 64: Donna non vidi mai
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 0x12b581898ac091981b1727ba781a447321c2a2cb7c90d35d004791b63366960d. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN962301720 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x944e1eed1a560d1a2636fd873cf39c0397b745f58369627528bc216d48ea4180. 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/DEN962301730 — a six-check JSON result.
La rondine, SC 83: Parigi! È la città dei desideri
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9539a7a2068eb3bf4ea078b375d213be7dbb56191ca74ee07ce98836a321e920. 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/DEN962301770 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x863aa280c303c2803c8d93f21516118d3c4c858c068376b0ed50e47bfaa6cfeb. 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/DEN962301740 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3957ecee504a92a0dc10f5c8c85afbab4056e28f5e6785ce0fc98dbf5df10ea6. 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/DEN962301750 — a six-check JSON result.
La bohème, SC 67: Dunque è proprio finita
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46ed07e66d13092b08ba8bf1f6abba400e97dd6874b87211ade9a2a1d335b886. 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/DEN962301760 — a six-check JSON result.
Tosca, SC 69: Dammi i colori! Recondita armonia
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x993146ce24ab4772f08248a7b632bc65252bf147f23e143284db0bbb98f74177. 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/DEN962301780 — a six-check JSON result.
Tosca, SC 69: Mario Cavaradossi? ... E lucevan le stelle
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8df0f003982d1e84822772ca4e735e6cfd40fb4926ffdcc1fb19b704ebe4c23f. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN962301790 — a six-check JSON result.
Manon Lescaut, SC 64: Ah! Manon, mi tradisce
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce3de1e4124b28fd3f6965f916d90c75938cc43e490f00ba9feb43879e61d97e. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DEN962301800 — a six-check JSON result.
Madama Butterfly, SC 74: Che giova? ... Io so che alle sue pene
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaed279a96f4ace10827901c9f6aaa337b636501245ec611f5aa82e0973a83ed. 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/DEN962301810 — a six-check JSON result.
La fanciulla del West, SC 78: Quello che tacete
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52c69dfc683676932956bd99fd0f372b0d956ad35384ffffcc1b17b16cbfa0ab. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEN962301820 — a six-check JSON result.
La fanciulla del West, SC 78: Ch'ella mi creda
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac9ec3268c7ee34069407561086135eebc07f566a8c0c33b72f601e1fae99aa7. 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/DEN962301830 — a six-check JSON result.
Il tabarro, SC 85: O Luigi! Luigi! ... Dimmi, perché gli hai chiesto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe23c51ff738de5ede8a7a7c88a3d4bb4a0811de5dc1570d69de63d093c381123. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DEN962301840 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8f864929f76078280049f6685ac117f2c9a37fed068cd56bf1611cce87847b1. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEN962301850 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7fa4b25f58fce826ebdc57d679ca12a3db964aa43e6c9c4ad6bc06e1e30669e. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEN962301860 — a six-check JSON result.
Hudba je nejkrásnější emoce - část první
Werther: "Pourquoi me réveiller, ô souffle du printemps?"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51135468ed05e9ac9c6b108a39ae757ade11a5018a50931c3086087532b7bea0. 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/DEN961901110 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60ac2bfa95652a45781d64d04c89b9e9b1b0615d94cd4d3a35b02403f468c881. 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/DEN961901120 — a six-check JSON result.
Roméo et Juliette, CG 9: "L'amour! l'amour! oui, son ardeur a troublé"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12e065cd83cfa6c159e29f9ed963ac9d9a89fa3ccce2d2221d6272135f65b720. 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/DEN961901130 — a six-check JSON result.
Roméo et Juliette, CG 9: "Ah! lève-toi, soleil!"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x830b33de38e2fc238f3f2235f8fff6658508ca0506e67b311c48f27b15829427. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN961901140 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30ff0f216982442d951c7fa8341b6d474d32e4a4a8806184fb4b4f778b60d35e. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/DEN961901150 — a six-check JSON result.
La Traviata: "De' miei bollenti spiriti"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0793202710a360efb54414fbd1fe1fc978d0823fbaf4dbb3c6378df463081b7. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DEN961901160 — a six-check JSON result.
Eugene Onegin, Op. 24, TH 5: Introduction to Lensky's Aria
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2393981d24e261fe33e2d0937d7a1dcef5224728c570d09b8e17550b1cb85cac. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN961901170 — a six-check JSON result.
Eugene Onegin, Op. 24, TH 5: "Kuda, kuda, kuda vi udalilis"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4bb9796747c47a8d6cc680a829fafdb344af717fdb4a0a0a34b69e79a319a1d. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/DEN961901180 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a234df611f7923d7cae5964210bd052075754192c42a6a2f7b2d49706f7b03e. Chain 2 (Bitcoin): anchored in block 960153 (2026-07-29T21:57:12Z), 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/DEN961901190 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ddb3e82a4fa30a0d3340ab2cb106e1efc02712ecc68a35c9151651b927c27cb. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/DEN961901200 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f09876c4ae05f4c430380b6fe0cb96e24117b0d12bbc2130c22f64bc5ee9a50. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DEN961901210 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54c7011e0fee4eb0b8e90c48832162d6d9f4c7eccffc8d0686bcc924cb574b23. 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/DEN961901220 — a six-check JSON result.
Lucia di Lammermoor: "Tombe degli avi miei"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dd0be626a20cb6a77b7adc884ba9095a5dc00e9e7c0fc92228cfeb9f655b61e. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN961901230 — a six-check JSON result.
Lucia di Lammermoor: "Fra poco a me ricovero"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaddfcfbc8d66db2cafe5aff264a02ddf684e39adeac4e52bd84386faf542cdef. Chain 2 (Bitcoin): anchored in block 960161 (2026-07-29T22:51:26Z), 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/DEN961901240 — a six-check JSON result.
Faust, CG 4: "Quel trouble inconnu me pénètre?"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x822c148c5affb1d051689d3574e1c0de57156908ee8abc32f8351bcdde2cb08b. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN961901250 — a six-check JSON result.
Faust, CG 4: "Salut! demeure chaste et pure"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ccafda7addcde7f41dfa14ba80962675e32528349197ab853faac356fb05413. 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/DEN961901260 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf60654393d2ae2157a6d7a0b32f0ebd10022b851e5bf36613fbf460c9c66fefb. 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/DEN961901270 — a six-check JSON result.
Luisa Miller: "Quando le sere al placido"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9b65a41ecc0cdc36f786a7c3cdeab2df454a1c01033026d030e06e099dde32b. 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/DEN961901280 — a six-check JSON result.
Dante, Op. 111: "Ah! de tous mes espoirs"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x094c7c7740f1f66f1982c7623afc30646b253ecb6eec9646f2d23f0264dac7fb. 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/DEN961901290 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb066aa40a09fa5d9e1e23e891b7e6490c914b8c406d1c832fd85b4af0925575d. 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/DEN961901300 — a six-check JSON result.
La Damnation de Faust, Op. 24, H 111: "Nature immense, impénétrable et fière"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf50618fed1e241a50e73bd2919bf9315eb857a9c87cdaf2343fe5b71707d781. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/DEN961901310 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc810dc3b8018209610dd73985cb80ac6e222e3000adcaff30ea46e9faeeafbb6. Chain 2 (Bitcoin): anchored in block 960145 (2026-07-29T21:13:37Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN961901320 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9a41e6738b8b930154d264af0ab0f805f106af5cb131807e227bb9f6ed20f17. 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/DEN960800270 — a six-check JSON result.
Giuditta / Act IV: Meine Lippen, die küssen so heiss
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a4dbb53dc091e87b900974f6003113769492494061dd5e58a222e66be760d5b. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/DEN960800310 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c26a325e4b204ef80209928ac33d87ea906ba3583b4122f17aa4fe4b97bbbfb. 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/DEN960800290 — a six-check JSON result.
Les Contes d'Hoffmann / Act II: Barcarolle
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x995d4eff3676ca279ea33e57d290d2bdf80161039ff41ec9a316fcfb4a7e949c. 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/DEN960800300 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2942100eba25e09b99b58322d695b91695d2e39b4934bddd2dbf9a40c39c2884. 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/DEN960800280 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3354320c921f9084395bd5d194831b50e031fe0d312f67a1b828f7a5702c213e. 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/DEN960800320 — a six-check JSON result.
Ciganské melodie, Op. 55, B. 104 - Arr. by Jiri Teml: IV. Kdyz mne stara matka
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Fünf Lieder, Op. 41, TrV 195: I. Wiegenlied
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'T Was Not the Wind, Op. 43, No. 2 - Orch. by Andreas N. Tarkmann
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Captivated by the Rose (The Nightingale), Op. 2, No. 2 - Orch. by Andreas N. Tarkmann
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La Tempranica: Nº 2 Tiempo de zapateado "La tarántula e un bicho"
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Gypsy Melodies, Op. 55 - (sung in German) Instr. By Jiri Teml: 4. Als die alte Mutter
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Puccini: Tosca, SC 69: Mario Cavaradossi? ... E lucevan le stelle
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Verdi: Rigoletto: "Parmi veder le lagrime"
Verdi: La Traviata: "De' miei bollenti spiriti"
La Traviata / Act 2: "De' miei bollenti spiriti"
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Dvořák: Songs My Mother Taught Me (From Gypsy Melodies, Op. 55, B. 104)
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Le nozze di Figaro, K.492 / Act 2: "Voi che sapete"
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La Prima Donna: Sumi Jo 30th Debut Anniversary
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Meine Lippen sie küssen so heiss - Operetta's Greatest Hits
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