Erkki-Sven Tüür (; born 16 October 1959) is an Estonian composer. Life and career Tüür was born in Kärdla on the Estonian island of Hiiumaa. He studied flute and percussion at the Tallinn Music Scho
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 0x4ca47a337e409f3678f376802dcbf5dcf72ce8e1547dc44c3dd604c320c80985. Chain 2 (Bitcoin): anchored in block 954516 (2026-06-20T07:04:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a15caddb-3a07-4cae-a1e0-bf85b5a1289d.json and https://artists.proofprofile.net/proofs/artist/a15caddb-3a07-4cae-a1e0-bf85b5a1289d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Tüür: Illuminatio, Whistles and Whispers from Uluru & Symphony No. 8
Vasks' 'Cantabile' and Other Baltic Works for String Orchestra Vol. 2
Erkki-Sven Tüür: Symphony No.7 "Pietas"; Piano Concerto
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 0x1cc34217c009432a3d65165f5f0965f8a1b1b870045149a4ebf23e3d6481b9f5. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB331445201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81697e85cc7676f0f7f91a117519579428cbab83ad616b6f0633f587f923240d. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/DEB331445202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70c09a2bb1ea5ad9f54eb02d05e699c6eb2427043a96ec99057415451f3ef09b. 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/DEB331445203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6041b2850bae62d9aceb8fa2a2423cdfcd4a1986f9889be6c1ce4b5a1f24fc9b. 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/DEB331445204.
5 Kurpian Songs, Op.75 (1999): Hej, z góry, z góry!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04c502d361eb9ecd0d6f2c837619930648f78d75a0e8895fd431686a3e2edcca. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM10539111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8832c1e17d17805d69ce585ef30eecd6d0f80c317bce64688d42c6d6e8b229d5. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/DEB339559001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5eff12d4248312e07e122f7d981f29825fca44372809e118f258a8d9a680840. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/DEB339559002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c6462a2e59b02e26454a6616e263f93920beabdc949c18a469f98c8092d67bc. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/DEB339559003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08c85c516fd4dd0b6f219279fc0f48af4753488a0d5a481c02ed8440da96e0b2. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/DEB339559004.
Pärt: Cantus in memoriam Benjamin Britten
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Tormis: Swing Songs: No. 3, A Pretty Girl on the Swing
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa970bcb494b1feaa9e454cf11839fe9da74b04d20414d36d046a3b2c8324f5e1. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/GBAYC9502942.
Tormis: Swing Songs: No. 4, The Swing Asks for Gifts
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x096cf3b9570ffd13c3ab7e2357d8561b67ae4cfa219e1dfcb866bcce37ecbd4d. 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/GBAYC9502943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6560b7f5f3a893467019053515963228e422747d9321facb67802a88f5666de5. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYD9400025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe064c4d1e7650aceeb084c92e86e7e4733b9cf3b1e0963256fd5f1dce91b911. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC1702925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3432ef490f8d31bd69e42a9ca933befb8b9dd3b4cb8149eeaf95a965f5f94c0. 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/SEAES1787010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc94b7ea6f983d64fb0d4df5f205842f06066bab76897fbaffd5fa44e2f869b66. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/FR50X2191707.
Tüür: Peregrinus ecstaticus - Le poids des vies non vécues - Noēsis
Tüür: Symphony No. 5 - Prophecy for Accordion & Orchestra
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f6d2e284c98f900e194e0315242f489d0b5719ec61b2528ae2521006bcec6f2. Chain 2 (Bitcoin): anchored in block 960383 (2026-07-31T09:50:37Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITBA60500028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb885c3c1f1051add6e347c928ec6d8003a1c9b32b6a537eff6a10755014029c0. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITBA60500030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c57706351011d083668430080efcd9db960824d7fbeed723f2dd7ea751a3c64. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/EEWS11900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86b99bd06fe33810851b01182ddfbbe42c146f762d9ff2194ae42d5f2af677a7. 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/EEWS11900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03f5988e1af54528287d81f2cbf966a4199a529581be2730d6bb65ee47a56538. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/EEWS11900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7acaacab31edbdf34379caa8af2d76fe0a7834009814d19371281fea7b6ac5e. 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/EEWS11900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab33a9423c07bf8e0f4d56394ca1940f7d436b8c31b61c99f9c110ba47a7a00d. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/EEWS11900010.
Rapsodie for Orchestra and Saxophone, L. 98
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44cd32fb200b0eab1120da4193901584c73ed4b5243cb691351bb42cc2e82f61. 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/FRZ119800185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1efdccb3b5ba091f90aa706972c6b2f040d8373dca76560b7844e7092512fa4e. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/GBAYC9001195.
From My Home. Music from the Baltic Countries by Pärt, Tüür, Vasks ...
Dvarionas: Élégie for Violin and String Orchestra
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14cfce77457db90e96f97eb284f69f658785e296f0b3eef0d8800f62ceaceaae. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEA809641000.
Pelēcis: Nevertheless, for Violin, Piano and String Orchestra
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11ef0ee369fe9c78d52b4465c670073cbf42415d3d8ca11d4ca04ab20b663a87. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEA809641401.
Dean: Winter Songs / Nielsen: Wind Quintet / Part: Quartettino
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x875903d62682c3dcf7b356cf75910041451533a79f55da23f1b147a73709cbf2. 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/SEAEN0332060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91da02c73be871783a8f2610c293949e2af20425b05f95b7dcfc31cc9a73c4ee. 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/SEAEN0332070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x540340de5dbd0647f08a462e7ce20d0e3ad58272a5b81a279323e34f383b01cb. 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/SEAEN0332080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cf10a638179c5ecd5a65233eaa62c803dc6138e18ddd372c22211d6cd200627. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEAEF9374090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb30e88cc03f2d01488c695960d16fe16c829421fdcfc4d75211ee43418b1ce1. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/DEB379200790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f416a5e3681f4bc696b5fff9136c363153aa296c87ad8ae796c88927b09b929. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FIFIN9400079.
Klavierkonzert Nr. 2, F-Dur, op. 102 - 2. Andante
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Northern Lights Vol. 2 - Music of Contemplation for a New Age [US Version]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f416a5e3681f4bc696b5fff9136c363153aa296c87ad8ae796c88927b09b929. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/FIFIN9400079.
Linkola: The Snow Queen: "Gerda and Kai" (Lumikuningatar: "Kerttu Ja Kai")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda0a1e48cc94c306034f797ac01452f429370edb4448de90a446825f9a1ebfe9. 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/FIFIN8600055.
Glass & Kancheli & Tuur: Music for Violin and Piano
Sonata for Violin and Piano: III. Movement III (2008)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb857a0a982906f462f8e8ab722fd6ed39eb5d5d7b257069066deeca5ab2ecdb9. 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/NLY331402999.