Maria Sandra Marlene Dahlberg (born 13 March 1979) is a Swedish/Sami singer. She sings a mix of folk and pop music and has had hits as "Kom hem hel igen", "Här stannar jag kvar" (which she performed i
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 0x1c8e6d359b364e72532d226c2e22f73a2802aef007ff4ab993d6de454949ce6a. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d56111ae-9a57-4c2e-a412-5cdfdf3b00ee.json and https://artists.proofprofile.net/proofs/artist/d56111ae-9a57-4c2e-a412-5cdfdf3b00ee.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 0xde184c2171373dbb7bc227859794b95032e226586fb1608351d62f69769e918c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/SEPQM0610744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9e552534e78719c3fff199d23939bd9ad4a09f8398b9506ccf695a4e6ead86f. 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/SEPQM0610755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3524d87d76fe141a636fed9d588cb319b9756c39662e9d2f19553be215609239. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/SEPQM0612698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x201e6cfd312b99cbac70e9b8639febc51c277c4b7d18c3fee446ab2aa876acef. 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/SEPQM0611438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3524d87d76fe141a636fed9d588cb319b9756c39662e9d2f19553be215609239. 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/SEPQM0612698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99109b8453a2fbd22cdfa5e3e37ad08ad107c0b178354fe48b6d825e168218fc. 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/SEPQM0610708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b5270816239de803214551acfe0e2742339c2a55b06bed22c6b36e3b0af6d2c. 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/SEPQM0611204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb361888cc14d46cddb2e7e2d59795c99aff4ffd2b76a2a47e30094cf09ccd1fc. 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/SEPQM0610169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7870254922cc451bf47d968f82ca10ffce687d2529ef0e3321ea3db525e2af3c. 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/SEPQM0610141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2feddbf8cde420662cab0718db06e14c637ab45e81b68580cf8859c11dd41079. 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/SEPQM0612696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9252e1197665268d30f888a2ab2fc8b932fb243b2fd0972d9dd966d69245d0f. 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/SEPQM0610047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2f8a7b96de3399da4e009b0fe617243d267b982abcacc47f1f9448ea0a3b63f. 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/SEPQM0611122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x853570bfbf843f0137e679413abd7ef3199ea588fe91014f5d0e96e6ceb26835. 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/SEPQM0610137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadb8c3a15b4245e2fbefaa6081fab023a43c6c0ee11953652cb879f74026e1e8. 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/SEPQM0613016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbf811651bf6a88fe4146281eef05cb16e2fe77e3f693a8ad0c24639c3176485. 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/SEPQM0611210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f9d991357c242b937a44330211ab94473b11ba414167ad1c1ae26dfac480c0a. 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/SEPQM0610707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x134c4916dbf6031462741f8426e1f753ac49720d7c50ea02921fcba2bc2d26e8. 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/SEPQM0610170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1ce66f9d57d782fef6d2b191f43331d19869c16056533186c98630a7134aa4a. 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/SEPQM0611126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c548763a37c0603692e504deb775611967bd0d7f5609665dfaa6310dfa919ea. 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/SEPQM0610181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd9952a77b21fa6d5ec75a84ed1699091bed11a6bc5f97b4e34f0bb45c802cb2. 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/SEPQM0610111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33b08682cc40cbedd6f7b147d011320735ab4a7e33a1b8698df380bc02181f3d. 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/SEPQM0610188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x223ff6a7b6a465f4aac07f681da22bd220f5d6806529f78b42ecacdd04b3ed40. 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/SEPQM0612500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dc318d57fcf0d08adfdd44b0b2f4be2a7f4cb047d206f3e3f6926d505a04607. 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/SEPQM0613076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b9739e90d60407d30ef465dda124f4d88caf983b3ac3043c8f465a39fc920eb. 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/SEPQM0610114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74a69c81caece89dfa70c2cce5cd6b7b82ec54daf5a5220cbd67c21ab45e8e74. 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/SEPQM0613082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2076873348f84436b62b683c843e53d202e15f3ceae384f1e573363db688eead. 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/SEPQM0613083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf070e86ded3161ee831178ff7f6e21767a06d64fe2f2e44cb1c90b9b69644dbb. 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/SEPQM0610183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b915de7aaae6f654e63f06a987dcd5ecf689eb042642a46d7548df866daec45. 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/SEPQM0610887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2abc889897223d496ffdf782d1279a38c95b71dd90ab37942fd5b09c2694dde. 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/SEPQM0612676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06522c33e47427407fd52a27b1c88d6fc367a482bf80f518294b601ba8864dce. 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/SEPQM0613087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8f4f4a43def4e89e57780ae1a77149c9d0c2e1f95e6d4974b307b6d0cd00ca9. 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/SEPQM0613089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd7654992c46c6e31a7d03f0d61571d78dd3f4a8f5022a9595b25f4b6e0e1d5e. 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/SEPQM0613090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4d7808eb8c9a24d84860cab5a6228e05b7ec5b6f858e046132db6bb4ca1ced8. 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/SEPQM0610180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66d0a940ec635161f96383395afc2d023be8ac58e24f1dd18a478b3ab0e4ebbd. 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/SEPQM0611640.
The Wind Has Turned Around (Vindarna Vänder Oss)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeae576594123cb5ef5fae6f5e5d3788ac9dd8618cd63349b9323ce5166692c5d. 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/SEPQM0613060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f7df1ea9ee82a84e9a346481ff0fc134f0b09ea3f41fed63dc740451f9c4317. 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/SEPQM0612675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2a28d4e91dc1be13ee601ccdc61feb548bf51bb151c05b4ee8517665d17e934. 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/SEPQM0610893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x983eef331ef2d967861145e0d1b4109fc335b40c02a1791b1f4c08ee0fb0a8b0. 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/SEPQM0611617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x722e8e3b0da97cef5ebecede631fed4c70be178be530ca9c6ccc812672c2cf0c. 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/SEPQM0611394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39a8083bd04b4eb85f5047fdc49f5e2273e8e17f520bece5a9d9ccc425215e42. 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/SEPQM0610687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a6a9bc884ebbbc3d72dd3e2cb170d8bd095969c3a58855571f0a46e6b3d7556. 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/SEPQM0610881.