Sarah Mariegaard (born December 1988) known professionally as Soleima, is a Danish singer-songwriter. History In 2014, Mariegaard established herself as a solo artist under the name Soleima, before
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 0x799383f723978de9658f94d4297e086b12197134095f4224182c9ad9ab3bbb92. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9ea410f1-2e89-48ad-bb4b-e1f23d883ed2.json and https://artists.proofprofile.net/proofs/artist/9ea410f1-2e89-48ad-bb4b-e1f23d883ed2.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 0x84db62eb1fac45d6ee195c9bb3ef23ad5e814c47d3b14173c21486f5238ce04e. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GBVHV1500016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75c12d6a151486569d650f9201d2a234540f15ea1a412ab2c029ec111765d29d. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/DKAZA1600277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bdd591b87afa2bb594e0d45b01df91ad82704a0fa9212039a673695402e5ac1. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/DKAZA1700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7829cc78b82ca64a81593ef42e94a3d2a51ba7c4d1eab3bfb662aa2c263c02b5. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/FR2X41687306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4119eda5aec2cecaa46f20d991e60ed6185dd2f3db4644a5ffe6421df7f3ebe0. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/DKAZA1700183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffc3d84ed38fdb3e6346e72195b2dac011e46093eeca7f1826df172fe1ed1ac1. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/DKAZA1700245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce2066a4d3a2296e4a0e38345ec78d8c301746d15d5121c71efe12d0ce96bf4d. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/USAT21903461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba6e25f36ac4c9daa7adff06acf9d2fe9bb535e2ce2d1f5cad0b7027681f4204. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USAT21907410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57610da16c55bbcf9b8c427032210e71fc0bb87cf530a996f0afafdc632ceb46. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/USAT22000395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6543b0a9841434475b15724a5eb920ac46525363b88b62d29814547f31cddb34. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USAT22002359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba6e25f36ac4c9daa7adff06acf9d2fe9bb535e2ce2d1f5cad0b7027681f4204. 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/USAT21907410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa90b9854ca81f6c6c2e4bc3c2b3cc45b6abfefe26d293decc889a51771e02414. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USAT22006575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x987b7c89df1f5f3c7cb22f63f012bf5652f0b6bf2061c0fb45d04441008bd5e8. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/DKUM72200033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf92b51aae5878285222be86c049597443f59ab74dd2de7dc3654801c399abad2. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DK2DY2200202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7574997f5aff55f4eb64bbc759b8e8fad83d07ef2ebc8c13e7752a61af595ca. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/DK2DY2200348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc9f98e2024e518d15808047690a157a6a089625b985e2d598457095d740c830. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/DKADG2200568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe03435e6595333dca19878e65cef46c37904e6861d46e11783b271f521be67db. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DKADG2200588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3561cd9f1c4ebda970523d37f5c56aa7b12b525c92d8e146a83e6d4c52df49ca. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/DK2DY2200357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85a028f7232c89af162bc46ef271e3a3a89a3aba846b1ebbd8de9d5729d55067. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/DK2DY2200356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc76bd94e45eeb8c786a127dfbfeb4341f4c1fa5f6a34d6271f8b7ce499193a44. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/DK2DY2200358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf92b51aae5878285222be86c049597443f59ab74dd2de7dc3654801c399abad2. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/DK2DY2200202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c18573a4cd90620576b6e02f924e7a28cf6f683de0aa1baaf6a0be18d9350f8. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/DK2DY2200359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1c525d0e72464deb743e8b15606ab59f55f1c9609e02d926cce5e884c787b00. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/DK2DY2200360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2786f182e5134b8d2be132bade1ec5bf508db8a216bf6a89399d62eefdfa259e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DK2DY2200361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1374694621092b8d2f904eb8d03e741b45b35c30521dad4c46e0d1200d202715. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T06:37:40Z), 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/FRX872587978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x823671f2f59cc880d97ecdae96e23397020c0c3c2a6aba6acdc17da25ae97ba1. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/USAT22007772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98259b2bb8dca026eae805a147f9e7710a17752ebf063f483e54bbcf934a28dc. 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/DKAZA1700166.
Toppen Af Poppen 2022 Synger Maximillian
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe03435e6595333dca19878e65cef46c37904e6861d46e11783b271f521be67db. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DKADG2200588.
Toppen af Poppen 2022 Synger Nicklas Sahl
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d975de60c079c015c86f8662576c64df03ca0a286eeaca8bd4ae464a6bfa44d. 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/DKADG2200555.
Toppen Af Poppen 2022 Synger Steen Jørgensen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9496159ae6499b86ab0f0c0775eb9e02b2495eb6d73aa591bd4593f4dc616a87. 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/DKADG2200640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83f3f4c8a5ef5c99711187aa232d26d56311feef3e0345a935ba94a2c3c1c5be. 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/DKADG2200611.