Sveinung Bjelland (born 1970) is a Norwegian classical pianist who has made an international career as a soloist and Lieder accompanist. He also holds a piano professorship at the Academy of Music in
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 0xb90fb0cba3e684da813768f77196695ffa3c4ce4afa954486d733b4e2d1acebb. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/13fc1b5f-e534-4e66-9af2-72aed9182648.json and https://artists.proofprofile.net/proofs/artist/13fc1b5f-e534-4e66-9af2-72aed9182648.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Tveitt: Piano Concerto No. 5 / Variations On A Folk-Song From Hardanger
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 0x3b82a4874ef54c54c4fb190681d326a6da832d9ec896456fd50549013bb4bdee. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/NOMPP1310060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfdbe9e141199180994e8746602fb816c69609807cb43598a3f9534875760587. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NOMPP0807120.
Stravinsky: Three Pieces For Clarinet II
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44c4865114744cd4240f788d312079308e2c4f5c81350610d3cfa95da53d4895. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/NOMPP0807130.
Stravinsky: Three Pieces For Clarinet III
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf9db5d6b83afcdcd0f1d2f8d650f116eeb05ecc364c8a80172cf4f38e5c18ff. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/NOMPP0807140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb09700b51bc029ac6b2c840ed34ddf462960419419adcaac85fc5079aecdc395. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/NOFZS0535170.
Familien Nerdrum (Originalmusikken fra serien)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04c7d04642dcf67cbaf4fd2ad9026ff227e838fc62cf68185ec110a90d099231. 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/NOFGG2418010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6b9ce1c43814a69a7fc218f42192becabecee268f1bea086c3238ed686da19a. 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/NOFGG2418020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf17567b61cfae65c54bfe669797b2cfbd5f307052719bbba6fba21e4dceea50. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NOFGG2418030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc23c64480b4199435ef02ccfef6f30b1f0978bef6408a4bd41a0c5bfa8f992c3. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/NOFGG2418040.
Des abeilles bourdonnantes dans le jardin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf51ae1c8c5cc1757519a86b81c45187fb23e88dd2f024b831ea1abb4e3bac02d. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/NOFGG2418050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef1cde8037e57120815ead6bef5fe317fe6fd9b34bafc8b67a55ecc540cd38d2. 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/NOFGG2418060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ea75ed19ab9f736f9540648fab42f50c24d4f6f0e1ee04fcef0c145c5b5b33a. 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/NOFGG2418080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39396beea91a5f531126a26b3c9024605b1599dd655ed8b5018b421724cd5c6a. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T16:43:41Z), 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/NOFGG2418090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3c9e8662729dcac23884e7b665288c9750dcba13865b591ccb1dd220b9d3bcd. 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/NOFGG2418100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x666bdd49550af005306fdc02c5a65fafbc413409c35dc69712fc9faa5ab0d51e. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/NOFGG2418110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74764023c4ea9f43a9fabb948ee0905a68222af5ae408ddfcc68edee040dbb53. 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/NOFGG2418120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f5e2914414071dcaac9c85135875e777843ab4ca59def58f2d2ee31291befc9. 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/NOFGG2418130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f58a8b287acca9911d3925f47964a1ef7771722638b87ccb8550cc676ed75af. 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/NOFGG2418150.