Søren Hyldgaard (6 August 1962 – 7 May 2018) was a Danish film composer, also known for several New Age albums and for his concerts. Hyldgaard was a self-taught musician. As a composer of meditationa
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 0x912796a92f78add520abcce4d65ef41af36481b5f6eeb328d54585aef4a80adb. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4951bd55-8439-4edc-9a05-10e2c540601b.json and https://artists.proofprofile.net/proofs/artist/4951bd55-8439-4edc-9a05-10e2c540601b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
6 Romances, Op. 38: No. 3, Amid the Din of the Ball (Live)
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 0xba44052c5b496852606f1177257fbc86bb74aa9f0e9fc9aafff8b7ca36274fb5. 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/SEAEW1444040.
6 Romances, Op. 6: No. 6, None But the Lonely Heart (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb587a568dd9409343235b0bf7cf93ea5e8e4c9009c2bac7868ea904c855ba8c5. 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/SEAEW1444050.
Recorder Sonata in F Minor, TWV 41:F1: I. Andante cantabile (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c319a51c88c64ebb926af6c30aa01ca5a29188f91ba0b45ba191d322d7cc652. 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/SEAEW1444070.
Recorder Sonata in F Minor, TWV 41:F1: III. Andante (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x998e5b5217278c8049a8f87440807a45ea44380536e5d026a1e40b90a364ed84. 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/SEAEW1444090.
Recorder Sonata in F Minor, TWV 41:F1: IV. Vivace (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaca4b736a505a8ae31783c01de4a9fb9af2ad7ab246a6f8c9ec6bbc66cb3ec12. 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/SEAEW1444100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa00280fca2fc9dda302b49d2fcb70b0ed80bbf1703f14150671fb328cc339a8b. 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/SEAEW1444110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bd255d5bee27a9f92594bb3a699a50709c9fb7373589c2570b2b70be1cdc2c8. 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/SEAEW1444140.
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
2003 WASBE Jönköping, Sweden: Danish Concert Band
The Wind in the Willows: II. Ratty and Mole
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ee87e745a217862c57c49efc69ee3520462287c95a1d5af1071642a2d99f6e6. 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/USVZX1017504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8cd4fc6865b4d586d628599bbf50f1159c006ec88dfea88864f70fcefa13d9d. 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/NOCJB1501203.
Sóleyan Lýsir Um Fløtur - Faroese Version
The City of Prague Philharmonic Orchestra
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9410392b22fa64e52d55fa765ee11ac809d94627eda208b1d0292973bcefd0dd. 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/DKBCA2104501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd469aca370594fc82a336a368311efb245adeb0a36dd103118bea678abf60eb. 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/DKBCA2104511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95edf48e574ee661d7d1a666c54a8a2633e904a023f2e05c79d3662fc9b07d06. 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/DKBCA2104512.
Holmboe / Grondahl: Trombone Concerto / Hyldgaard: Concerto Borealis / Jorgensen: Romance / Suite
Eye of the Eagle: The Film Music of Søren Hyldgaard
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe60e94f1518141e28431f3a4728c02cc05761fafe29489891d1889922a417ae1. 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/BEO891700700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5396f72fab728e4fa93d7eff6cc98df7e538dfbacf6c830870c649ebe4726224. 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/BEO891700701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52467822074edb2fcf3fef7a5b98132fafc2afb7b73684d184cd7e95ec748224. 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/BEO891700707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x071aa4105a4c0beef1210a9a81e63623c60fda9c754b263ec0acdade7a1d2d05. 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/BEO891700717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c6540f42aff9241827304c8f583f8f45d8e69d8914d8c93f8d2dac12afa19e7. 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/BEO891700718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a208c1a8d3d2fb5cd3f7ebecb1905055c013ef48fe45136e6f3a60caa548107. 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/BEO891720720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61e56205fad02d5898088058c8a009e7cdc686e3ceb4e7d07b45a0359cb3fc9b. 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/DKANR0377102.
2007 WASBE Killarney, Ireland: Nagoya University of Arts Wind Orchestra
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e3f82db3def1ed4b29f4c94b94d8544f90b4137601506891fe4e0f13e3efd00. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/DKFAA0602404.
Concerto Borealis: Rubato - Andante con moto -
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63e00fc4ec9aa4ef875462749baa4009c1f45b04886781b434daf2ab48b2b8a0. 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/DKFAA0602405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cf78bd4352d275dbbd2963d575c176f79e0f8a0b173cd7e194b441a734e784b. 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/DKFAA0602406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbb7849e6e56f52dd5f44b811ecc916d5cf5e01a72f7f900b6902c7cda2703ed. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DKFAA0602407.