right|thumb|Peter Mattei, 2012.Photo: Håkan Flank. Peter Mattei (born 3 June 1965) in Piteå is a Swedish operatic baritone, particularly known for his performances in Mozart's baritone roles. Biogra
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 0x134ed88acc9b85e1ecbca4de8faa4b764826325ad9b43f3bf35b8e0447619a19. 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/6d5b0d30-3892-4095-bd14-f8cea455a2ec.json and https://artists.proofprofile.net/proofs/artist/6d5b0d30-3892-4095-bd14-f8cea455a2ec.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 0xd95c8cfaf9c6252e2a79b46c8b36526bc849dcd2a8a41f557bdaf8f1f3d2faa1. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEBAA0700201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6444675b114aa6370c3d35441022f998300f66e9fc2243980a328e6e839fda98. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEBAA0700204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70a3cd9079f8e0642d964d143366a3db1185ed6bd7f2de66325fe4641d755c53. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEBAA0700206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd354628be2207c263a8fcd6f945c3994413d65a0f8f050d58ee4230ad70dbc52. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEBAA0700208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf41cd5ac61eaa7a9852cfcdd8190caef51907083af8176893979e9905c1ee8ad. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEBAA0700210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd954a5a2b083562e04ffdc8dc65ecb63864266c670d001787f9b0c72f3cbac7c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEBAA0700212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a6c71606cde1527b035ecdef283faf699c2910d47b53788472767b5cd7f32ed. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEBAA0700214.
Stenhammar: Songs, Opp. 7, 8, 16, 20, and 26
7 Dikter ur Ensamhetens tankar av Verner von Heidenstam, Op. 7: I. Dar innerst i min ande (Within My Soul)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dba61fef4e850a121682cea605fd1f66f7d520b2f5fb5d717d8d8dc7fd97aa1. 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/SEAEG9454010.
5 Visor till text av Johan Ludvig Runeberg, Op. 8: II. Dottern sade till sin gamla moder (the Daughter Said to Her Old Mother)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa51db9f2a2104cd53497a22149bc5e64e4df467d7537f254cfff466f8c4f401. 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/SEAEG9454090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2646bdfd5a9b81d26ef546ffd6e7c38cda14d1a19ddde05e35b4b5723ac37b5. 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/SEAEG9454160.
5 Sanger av Bo Bergman, Op. 20: I. Stjarnoga (Stareye)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60e97df4a22f1aabc1f5c382b0601f2fa2ead0c0a85d8e48b3268ea40f50b2d1. 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/SEAEG9454170.
5 Sanger av Bo Bergman, Op. 20: II. Vid fonstret (At the Window)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9e246f45631efaa67b1b7c6ff399d5bb9fce02d60b9792b4c1865671a6800ff. 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/SEAEG9454180.
Visor och stämningar, Op. 26: I. Vandraren (the Wanderer)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe834b27ab0d813966ec98425edaf70bc7b96adfe2093b440a96032ff2f4c38e1. 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/SEAEG9454220.
Visor och stämningar, Op. 26: X. Prins Aladin av Lampan (Aladdin of the Lamp)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda613a0e01e912bad7c8f4515af426ad0f0afc681b5f490ddddfd0d162696e22. 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/SEAEG9454310.
Symphony No. 8 in E flat - "Symphony of a Thousand" - Part One: Hymnus "Veni creator spiritus": "Imple superna gratia"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x888acfce9b082decbdf83b52495e45a595db29c8a535330c3a5d0ccf985bf778. 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/GBBBB0100002.
Symphony No. 8 in E flat - "Symphony of a Thousand" - Part One: Hymnus "Veni creator spiritus": "Infirma nostri corporis"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb3d72de8d82da60b23930ca4b428f2dd0b15525a95536033370fdb0a837e0db. 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/GBBBB0100003.
Symphony No. 8 in E flat - "Symphony of a Thousand" - Part One: Hymnus "Veni creator spiritus": "Accende lumen sensibus"
Jongens en meisjes van het Kathedrale Koor St.Bavo, Haarlem
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b9dda3670b6298b5edb176747e95725220637f2c5952da6b0d4ddc865d01626. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/GBBBB0100004.
Symphony No. 8 in E flat - "Symphony of a Thousand" - Part One: Hymnus "Veni creator spiritus": "Veni, Creator...Da gaudiorum praemia"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6fd9e8a4d66efdfca45c3373f7656fc301565b56cf275720958ccfe289e7a44. 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/GBBBB0100005.
Symphony No. 8 in E flat - "Symphony of a Thousand" - Part One: Hymnus "Veni creator spiritus": "Gloria sit Patri Domino"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f8fc74f964511c57add9a7faab80a813d3b12d4e8e9202172fab7603dbcd16c. 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/GBBBB0100006.
Symphony No. 8 in E flat - "Symphony of a Thousand" - Part Two: Final scene from Goethe's "Faust": "Gerettet ist das edle Glied"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff074ff5ffb7dddf1d4853ca9499d5422935518874b45728f16107ec7b4671a6. 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/GBBBB0100010.
Symphony No. 8 in E flat - "Symphony of a Thousand" - Part Two: Final scene from Goethe's "Faust": "Höchste Herrscherin der Welt"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4040e55b72aa1c33574f907a77218e89401fcda94287fb793f9e1761e814174. 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/GBBBB0100012.
Symphony No. 8 in E flat - "Symphony of a Thousand" - Part Two: Final scene from Goethe's "Faust": "Blicket auf zum Retterblick"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72558cf76029085e6c14f46f872ad3cafe30060f6461b2590b126ee49bc44645. 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/GBBBB0100017.
Winterreise, Op. 89, D. 911: No. 1, Gute Nacht
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1c9af8d00e90326a6ae036d4a83d43d21395cba94c7e0f98a1efa04e9afb3ab. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEAEA1944010.
Winterreise, Op. 89, D. 911: No. 2, Die Wetterfahne
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe13ecfe1b184c28bfcf73383f1a30c1d612e0eaa2fe6f6b178f9dbf208c3f8f4. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/SEAEA1944020.
Winterreise, Op. 89, D. 911: No. 6, Wasserflut
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf173c13f85c791e0e20414de0779c8be29d00ef03c286ca606fdf31d6f8b650c. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/SEAEA1944060.
Winterreise, Op. 89, D. 911: No. 7, Auf dem Flusse
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50edd070c0a70fb98714d93ee9ff509320c9595b9ef6aaad201a68dcb3386be0. 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/SEAEA1944070.
Winterreise, Op. 89, D. 911: No. 9, Irrlicht
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9029b027b7ef7c8df5a067be031bd4e097cb664a3ed1e3ef5408290c402c142c. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEAEA1944090.
Winterreise, Op. 89, D. 911: No. 12, Einsamkeit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x239eed95a7f804a7bf74f2009d3b0c33444cc8be27d60337445ccb0a3749943f. 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/SEAEA1944120.
Winterreise, Op. 89, D. 911: No. 14, Der greise Kopf
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02142e205110cb17f9b83790765c9f851b5fe81558182fcc9e73ce47fef7c7d5. 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/SEAEA1944140.
Winterreise, Op. 89, D. 911: No. 20, Der Wegweiser
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd61ee35ddea077f226f3bbaac4014450e5ecc7c489a2a485f6988d8494e46a92. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEAEA1944200.
Winterreise, Op. 89, D. 911: No. 21, Das Wirtshaus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc08d88e77ddf946244a49e5de36961652b5523b145e4a242c357a23550464e17. 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/SEAEA1944210.
Winterreise, Op. 89, D. 911: No. 24, Der Leiermann
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6ee35592c67eee88b3dd8c7a3e3d3d4925c73ccdcf17f6e8644634da819cab5. 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/SEAEA1944240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x648c03a31cd7c5019f291e2436905c219168ace022e727a24cc9645050653518. 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/SEVOZ1351114.
Don Giovanni, K. 527, Act I: Finch'han dal vino, "Champagne Aria"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82d7dfc8b984056114f2ac2ff2b5d2e5926d7e5aa50433569a22249e00ef1f06. 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/SEAER1049010.
Don Giovanni, K. 527, Act II: Aria. Meta di voi qua vadano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x192158bf16149c0d369f4afa598a52ac502383fcdf241695735713decf912027. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEAER1049020.
Eugene Onegin, Op. 24, TH 5, Eugene Onegin, Op. 24, Act II: Uzhel ya zasluzhil ot vas nasmyeshku etu?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf14ddd9edce911af5e3ab01221b35082d8a4425f43958f0d7d20d3d5cdbfdb69. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEAER1049030.
Faust, CG 4, Faust, Act I: Cavatina. Avant de quitter ces lieux
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b0a7d44585d839042d2f03e5424d6edf95c2792beca26f47b1bd5e3d09c91b7. 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/SEAER1049050.
Le nozze di Figaro, K. 492, Act I: Se vuol ballare
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03d55dca1dbc79ff51f1259230d016d3a911053c458f0ec5365784480c7a914d. 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/SEAER1049060.
Le nozze di Figaro, K. 492, Act III: Recitative and Aria. Hai gia vinta la causa! Cosa sento!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec1fc39bf248a40183d244f42759a755247bb0bee7d518a9af56065ad6599070. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/SEAER1049070.
The Queen of Spades (Pique Dame), Op. 68, the Queen of Spades, Op. 68, Act II: Ya vas liubliu [I Love You]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe122db98a5f15e811149dc3261087e8a29200796f3c5b5eb976b7b83275b65de. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEAER1049090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a23ce6cfd40a15ab9342b1b4c8df9f4fb5ac6531f07abb625498d97a9f8c6f6. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEAER1049110.
Eugene Onegin, Op. 24, TH 5, Eugene Onegin, Op. 24, Act I: Aria. Vi mnye pisali. Net otpiraites - Kogda bi zhizn domashnim krugon
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x822387c89e553634f2c7e74721d2aa04f2fb4c0944894f23dd1d178c9a55faea. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEAER1049120.
Don Carlo, Act III: Son io, mio Carlo - Per me giunto e il di supremo - O Carlo, ascolta
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x590e403d76ca68c1d810334da77fe87569ddd8eb269e24a8b056135fb5c95b83. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEAER1049130.
Billy Budd, Op. 50, Act II: Billy in the Darbies: Look! Through the port comes the moonshine astray
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23c415dd9d406a93353a335a55f264afde7a5f8bc4ad65c9b619efbdf0aca971. 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/SEAER1049140.
Don Giovanni, K. 527, Act II: Canzonetta. Deh, vieni alla finestra
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ebea37ae14c44600b3808650acafbadb650e338da6e67b98be44af7458c8ed6. 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/SEAER1049150.
Fidelio, Op. 72 (Ed. Lühning & Didion), Act II: Finale. Heil sei dem Tag… Des besten Königs Wink und Wille... Wer ein holdes Weib errungen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8276f8bf7763b1d7f99293b7962d71af5f9c5e9a564e822cbb60057c927a9a9. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBBBA1045730.
Tannhäuser, WWV 70, Act III: "Wie Todesahnung... O, du mein holder Abendstern"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3a65b4b43b458a4c92070dc2c07c90219292196d5e11a7e632587225269e92e. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEAER1049080.
Tannhäuser, Tannhauser, Act II: Blick ich umher in diesem edlen Kreise
The 50 Most Essential Wagner Masterpieces
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32ac3da87856803b26182bc4f3dd8dbd31addb8ebf7261211540c78c8ac7aceb. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEAER1049040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b9dda3670b6298b5edb176747e95725220637f2c5952da6b0d4ddc865d01626. 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/GBBBB0100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65b9a4da517d3da3111214a3e6a81ac95fa75001d414d895fd0616c9a4d8d0c7. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEWDL9744321.