Tuva Semmingsen (born 13 January 1975) is a Norwegian mezzo-soprano and coloratura singer. After studying at the Norwegian Academy of Music, she studied at the Opera Academy in Copenhagen. She made
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 0xc61b16044986fbdc0d1a07e8cbd48567ac3833ebb829f9dd53777f5bcbee7ab2. Chain 2 (Bitcoin): anchored in block 953704 (2026-06-14T22:58:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/79402fd8-1569-4905-9728-548ed194e718.json and https://artists.proofprofile.net/proofs/artist/79402fd8-1569-4905-9728-548ed194e718.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Gloria, RV 589: I. Gloria in excelsis Deo
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 0x3c8d4f1559fa58c5deb4f5d29c72b5d5471a1868b0601846e37ca462537e8808. 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/GBAJY0484901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e0dbc80ed2f9568e159f90c1587b9740fa8c7e87fce46fdfa9e065144aceba8. 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/GBAJY0484919.
Vivaldi: La Senna festeggiante, RV 693; Gloria e Imeneo, RV 687
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b3f6a1505adef819f90f9f3394acbc49e558513c5a37eeee32560e137167a9c. 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/DEU901501323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x076021ce3b97ab365bd9efd96bc3a4415ab650475428f4ce0dcc48dda8357d66. 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/DEU901501325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53bfe54182112c779b3cd599808c34725d1199db8ff35e1d67a4b3c4c7b484ba. 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/DEU901501326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa160565ba02ce7df7907070baa636ad285dae4efac37c933ec7d093c7c13d9fa. 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/DEU901501329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b8ef4103490bc048b74a20ada2f2b6a5ab090dd5b272f664088bf9eb7484365. 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/DEU901501330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86db7952415bd0154e5805b591473e0fb9a3e6d3b4327ceecb2835c60afa342a. 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/DEU901501331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x558aa9fd405894fee4d47a82cce873198e3ed5234874168206cf26c87e8d530f. 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/DEU901501332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9270187cd1c3bdb400c59e091fb4c1645a5540fcec194150575194d3d2d15df. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/DEU901501334.
Fantasymphony II – A Concert of Fire and Magic (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5661e5dc97377de84c5b13f13f53d204984f7c7ac01316e25f248715a1c0072f. 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/DEU901502207.
The Rings of Power: Main Titles (from “Lord Of The Rings") - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97c7659b4e84e139af1357ad8ec50bda466e604e34d99bb82096f13a1252ea95. 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/DEU901502208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe85eb48caa4bca8ee2466d6ebadda1bfb90b729bbdc184c0788a0ec3cda65024. 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/DEU901502209.
Warriors (from “League of Legends”) - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b0e99e5a60290b32712bc47485083f6bd4bf76e4860413536f703eff78118d3. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEU901502210.
Dragonborn (from “The Elder Scrolls V. : Skyrim”) - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x612391c2359bd3b86ddb58d1143b36fc40de35e752f455cc7d412ac72762819f. 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/DEU901502211.
Elden Ring & Malenia, Blade of Miquella (from “Elden Ring”) - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee551137c03d145109ccb6a61b4ffc9a08c194251cdc14dc9bfc10173e2796cb. 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/DEU901502212.
Double Trouble (from “Harry Potter and The Prisoner of Azkaban”) - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x368d51eabb28009af31f4bc4f2faa1aaa5055fd338c26850ffac615d3506b7d8. 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/DEU901502213.
Breath of Life (from “Snow White & The Huntsman”) - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d199c7f5319e5c7a7c765b1f45b5bf6a57809ad4c9c80ac3cd087b4af5a3b0c. 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/DEU901502216.
Jenny of Oldstone & Main Title (from “Game of Thrones”) - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05ae200daa76f460b909672f1a53310b8301d0a9d305d2cad748a8be10292446. 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/DEU901502217.
What Could Have Been (from “Arcane: League of Legends”) - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd152f7a5f05190afe8412fd39a8b6a002dad6526a0bcadb7fe73d9a38b74b811. 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/DEU901502218.
Geralt of Rivia & Toss a Coin to your Witcher (from “The Witcher”) - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x616e98e649a422378f3685d7f4170c9c3450837b5153a9df8b4f8596f347c88b. 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/DEU901502219.
Scholastic Sanctuary & His Dark Materials (from “His Dark Materials”) - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fe9b5780695852ae526287d0e40eae79e7106de12c69bd8422495902a0eee9f. 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/DEU901502220.
Arvegods - Sange & Romancer af Emma Hartmann
Breath of Life (from “Snow White & The Huntsman”) [Live]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d199c7f5319e5c7a7c765b1f45b5bf6a57809ad4c9c80ac3cd087b4af5a3b0c. 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/DEU901502216.