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 0x10f07f926fe7e343d05e9b4ff3353138828753c52951c1d9eeb11750e5016c8d. 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/c0cd0631-6a79-4426-be98-45a4a5b28efe.json and https://artists.proofprofile.net/proofs/artist/c0cd0631-6a79-4426-be98-45a4a5b28efe.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 0x1a4f29692d0136451247f3169996146dd57164bd8c91538fc1fc16bc3f5d066a. 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/SEWYF2240001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0770df1448c06a417e3342494b9becbcef4f77780000cea8645860da8f21691. 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/SEWYF2240002.
Maria Lang: Crimes of Passion (Original Score)
I Love You to Death (feat. Isabella Lundgren)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10ec70fe9b619c3cb9c8ffb56ae603566f21ca328e29304721e4aa9419e547b6. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/SEWUG1400301.
She Belongs to No One (feat. Niklas Gabrielsson)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6327207124d1e8405eac41e45fa57288cc3fccf63628a2e1fa89b5d20db66dc6. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/SEWUG1400302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcf39c3917caf8caf8322f9dd715a69f2a63b2cd1ce4fd4bd716d10d8b8246c2. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/SEWUG1400304.
Julian's Song (feat. Patrik Skogh, Jonas Wall, Martin Höper & Carl Bagge)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12a3726ecba995c70ca38f3ff53b005f131169680198f7e4e2294a33f849d5bf. 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/SEWUG1400306.
Lars' Legacy (feat. Jonas Wall, Carl Bagge, Karl Frid & Martin Höper)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44569c308be8ddc43a5b725b31d5f2a71bc49848443d12007c7a64cf229e76ea. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/SEWUG1400307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04442b671db0cc209bfdafd7b1165bab4b3c8242e4a89e700904a55b7d94101b. 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/SEWUG1400310.
Mona Lisa's Eyes (feat. Niklas Gabrielsson)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe35b745497047f1d2cc73edebeb219d3cba6b2a4b8e152f32bec2da8713e9d7f. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/SEWUG1400312.
Visa Från Nora (feat. Carl Bagge & Martin Höper)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35094df5a28abb8ed1853a7efe1743de2e00f1d4c568c3a70b12f791a68ec918. 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/SEWUG1400324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x180eec689dcbff9e3393daf76784ec0b1720b6a2da8a01d5c69bf6f37f062a55. 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/SEXGF2400465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x413c374bf6d62dd6d0c73a3051a094013418502a7332c8e5466c686367740d4f. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/SEXGF2400424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa8914f75f945f933b540808b5c7dc8e64abb60e4b74c0a59f6d349b5975cc81. 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/SEXGF2400378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc742808a8da24187c42d55f84797fd63947653ecaa6fc972600c0ae30beccf7. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/SEXGF2400345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79abc4eaba3ea1e6fdfea5d2ec1615c424262848829f1f32abfad7d591d987d8. Chain 2 (Bitcoin): anchored in block 960173 (2026-07-30T00:11:40Z), 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/SEXGF2301037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57787e601b797ad92b70d62303c369bb52e17c5996da2b3d5b3e1b4cd00190d9. 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/SEXGF2300805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3186849bd591d1addde6583c79fb6fae79e43b17cb8b33f62f808134bed0b1d. 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/QM6N22165520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f2fc5aed421ac3b4217104bb7ee69408eb13a274d32ceda9dc4e3efc0661522. 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/QM6N22165521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc855fc2a529b4d8199165d86a75bd51dd4596909a9082f7701b4d175af2fd296. 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/QM6N22165522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd15a8a2b37e6d0b86f104897aa7d1b448500ec56836e29ace8e3fa9769135a8c. 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/QM6N22165523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2535d9e51053bd173f485cf69ac3d3a060c32adaf9dfb5c542d4e7f8816c1b3. 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/QM6N22165565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7d279a26cfeee39f35f5ca540e2af4bb82796e03cbc21445fada70d3d2caed2. 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/SE3OH1511207.
The Whale (feat. Jonathan Fritzén & Jonas Wall)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d6e562a69d3718374f825a5c8d1d00a9a7ee5953eda3cca5f0eaf8091a6953e. 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/SE4ZM1500102.