Hilma Nikolaisen (born 1 July 1982) is a Norwegian musician, best known for her work as a solo artist and as a member of the alternative rock band Serena-Maneesh. She is the sister of Emil, Ivar and E
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 0xb61434ab63e9b07da2f3932e537bc58e22f5c75bff3663324614a977cf9b9aa1. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/66e0d2fa-2d8c-463b-ae8b-9e966d573648.json and https://artists.proofprofile.net/proofs/artist/66e0d2fa-2d8c-463b-ae8b-9e966d573648.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 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 0x6f6ecba3bd53e20068effd366b17331a95c11ee209ae7662d989341d34dd83aa. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/NO2WF2309010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5545322f2ecb49c275a83651356d7349ee7cae0fa991732ca8faabe3b556b2c1. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/NO2WF2309020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57b283f61484db2c7d95dbf4efe7b91ab5f81777ea4b6aff6b71f778dc0ac942. 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/NO2WF2309030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73f3fc085be4543cb628b023d4a0828d3813d9d7a849e31c21c414b85ed2dd22. 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/NO2WF2309040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8746b95a2b96137fae3bde3b4c4c345a81285e00184573dbd622c361aa3695b3. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/NO2WF2309060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0966bcbc72ee5b99611ca5f15b4d2274702c44d7f0eb4950a8d3e70a2e6f4c30. 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/NO2WF2309070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aed2c4b4407e3addfbfc0453ac17000bfcc0b6501b69b2bae721f1f76027214. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/NO2WF2309080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81eae1eb3b848c9955f424725ba605131d9ec65ea03fdb41668a8bf15662bd38. 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/NOFYF2013010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x064ac941bfda88b25a2fdd7f1db26d08961446a09b3720a955da50c79bfc1226. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/NOFYF2013020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x043951b63b59556c050112524bb82e886189b6b70c95ee5e3fd6062485b461c8. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/NOFYF2013030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc0dcd099e933c1a815d96a00d6e2b528a56644050adcabe58b1a135ebc705c2. 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/NOFYF2013040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x152a8e7f8233282612b13bcc9d3aa091928f56dfff6e036d918aa50681e1ba59. 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/NOFYF2013050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd60dd5d4cf47c93007a55564b3fc53a1d56f583ad7f5f76d48d73d279b7c48aa. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/NOFYF1807030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77a38fafae4d9b9f28bb43eee676eb6e0ee8c7b98d0e016170a9f32106fba9bd. 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/NOFYF1807050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc033527c96dac2cb8d3fbfb48e98593a3b4f8482d9e1222ac27be8c1a8a9a6c0. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/NO2WF2310010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a9a54c47e0538e66e6af967a0b61184a783ffdc2dfaca096669b6d761293337. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/NOFYF2013110.
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