thumb |right | 220px|Noll2 in 2026 Noll2 is a Swedish music duo consisting of singers Jakob Westerlund and Wilmer Öberg. They were both born in Örnsköldsvik. The duo performed their song "Berusade o
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 0xeba5e5ecc748bb44df72e28ecfdd82aa1b50c3e3f7242584286c026dc12e4f01. 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/cfdfa381-2c05-493f-b46e-741e8d2a1a1f.json and https://artists.proofprofile.net/proofs/artist/cfdfa381-2c05-493f-b46e-741e8d2a1a1f.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 0x90b33a8960a732067ab17075496cae788df49f7a4f44a70f8d975998c3e19c9c. 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/SEXPJ2400101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aca402327b06e1decf6733f24c0a53712cd64809ef1be4dfe722e5b957ecc4c. 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/SEXPJ2402901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x762758169d9305a17e8cfdc1af6eb332631cdf179ba9c073193e612090d617bf. 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/SEXPJ2402401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda9da1e9af922640311213ff6893c368691d56bac9a10410b71e746e838c29fe. 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/SEXPJ2401101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ddd70e6ff55823988be3b2e0c48cddb2ce2bd79e84a3734d5408a674f745a8a. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/SEXPJ2400801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc680d4fab39c2c8765778fd75059090efd27adb670776a04cd281525aa3845df. 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/SEBGA2400477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87cfc5320e3750c33d722a4631cd79dfc36440918a6fdcef62cc0a1ae3290c26. 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/SEXPJ2301001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdba78cac5ea402b782d7e692866a69394a7bef537b3e955e55a2d26997cfae02. 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/SEXPJ2300501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc83f99b2dbfcddf30a34a730c955c2ebb65b76300e7a26dffe8e15e418ea3c8b. 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/SE6QE2481930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cc6894482db8b62f5efa0144af643443ccc0b722a0cddbfdfedf4163c58bfe5. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/SE6HN2449795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb362998de1ad0f64f3f0aa54d5c91cac3988e9ffa0478a96604fe2e1592fe575. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/SE6HN2307320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f812e18318d4bf2209d202d1bfe629eda6d66754b130f80bc501ae0ead901ff. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/SE62M2298034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeb8b9ee49070544dc314a585947062cd1f7622362e87f7b0db9a660c5ac3cd2. 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/SE6QE2481931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69868d1bca137929ffb9a1f897c98be5e9f05c6a2ea8afb0899ba66d847b4cb9. 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/SE6QE2481932.
JAG TROR INTE ATT DU VET VEM HON ÄR MEN HON ÄR FRÅN SJÄLEVAD
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x632aaacc3bcb07df627da7b9f7511967a75db06a9c88efe421b26c443a0afd04. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/SE6QE2481933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4ead8a4a0b3fd415438cbbd98bbf55b40c3f59f02af90e8b7803bfadbfec07e. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/SE6I32360345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4d98a99cf14271445e1985a81e8bd6b3b6e029343302a895c7309e8ba69d1fc. 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/SE6SA2330531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6775ed502ad03b7860c1d3371b0208d27eba9998a50723b897d195aa9b35a354. 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/SE5752449934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2244451991dfe1deb5f445698c4c7f416177b0a07ff4294065e2f8de058ad0b. 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/SE6QE2481934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4825e883edc81bb69bf53bb46a88729048cd4066d3f323ba87d87bf26d444ce5. 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/SE6QE2446419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f6e8d656c0abab462e60d9e50b1f8b43e991ec374ac306b8208551eae2c4524. 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/SE6QE2481935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x089bdbd84f908ca3c16742d8c88e3703acf3674f1e5faee0557177392a26dbfa. 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/SE6QE2481936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dff1ee2b18fe3ed0dbd4709212704b7cda0bc23cfe07a10ab966bcfc1ea5e0b. 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/SE6QE2481937.