Silje Nergaard (born 19 June 1966) is a Norwegian jazz vocalist and songwriter. She is one of the best-selling jazz artists on the official sales chart in Norway. She became known worldwide after the
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 0x4b40716669325e7741651cbc8f47f51f3269741ce8b099d4fd7b8ed11c1b40c5. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e7f5b64c-fd73-47d2-99b3-23dc7ddff06b.json and https://artists.proofprofile.net/proofs/artist/e7f5b64c-fd73-47d2-99b3-23dc7ddff06b.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 0xbeb1d7f807c07c66505e2b1996c2f93b6030fd1d639de52891b4e086394b8e1d. 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/NOAMM0112050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1f327e734ea1611391e138e36a20e11fbdb83f03499d9b83f1e5915c28ba046. 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/SE2EV1000110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7ccae0d6609b6dfe5513dba1c97a2540a33e2bfd5a2c9b4a93b193c58d21645. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/DEE862100745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b485ea051faa51a5eb4958c18ddd165f3a0b7111bdd981fc77d188dbbfe14e9. 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/DEE862101088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eec013de048fde7eccac956f35d1475db37e2e190085823fd603e3f0bc24fa9. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/DEE862101090.
I Knew That I Loved You (feat. Toninho Horta)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbbd9c33560fda8a37e3dafe064e8a8dbfafc49ea38c09d47639ede2db613a05. 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/DEE862101091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a0f83cac21f1a02ea2c9b4b7bfeca45794395a9314887e3d79894cee3c4e8bd. 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/DEE862101026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0eda06ca2f5116e040cb1959961735469455a5f2605c8cb67cac73398b7fd8d. 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/DEE862100452.
Candle in the Window (feat. Mike Hartung)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1769b1ed2445932c5fb2b6268c69991804556a23cffaed942eea608839591d95. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T19:10:05Z), 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/DEE862101093.
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 0x36fa9fea33a575d4a45207ae9c50d7586033212900c1b8922a8b26ebfb815aa7. 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/NOUM70500702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbee629da6c88b37f53e70bf499c06c892142cdfcaacb4c28ebea511881615605. Chain 2 (Bitcoin): anchored in block 960241 (2026-07-30T09:58:01Z), 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/NOFKF1805040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6625eb2a70444428b5a9b0aa5a95654ba4ffffa0ac86cff6aabd8b0c9966a25c. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/DEE862100886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dad4fb5eba0a2406223aa17c01d965c9824ec7b2c6e0c082ea5f8deef115f53. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/DEE862101089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9c5bf19bcbb4dfa0e65a60494de912ec80d3e455cf56abf748c8539003a7459. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/DEE862101092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1de8aa839c23bf55bef3c2e75d0aa83f58c0bdefd0f666ac0c18c0bb9ff1e297. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/DEE862101094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e5c398c91aa3b90bf02af09838720b06bd5015d5bf5ee1b50ea424216796662. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/DEE862101095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78cbd2070fefd45fc6ec6bbb8c74b56978cf02022caf08a63fb5f3519feb530e. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/DEE862100591.
One Year (feat. Arve Henriksen & Sinikka Langeland)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60e622893ecbd414f1033601eb7017c459c04cf4701bab729cfef2290445dce8. 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/DEE862101096.