The September When is a Norwegian rock band. History The band was formed in Stavanger in 1987, by vocalist Morten Abel, guitarist Tor Øyvind Syvertsen and keyboardist Helge Hummervoll, all former m
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 0xff2c6bcbecdb279bbe364dd64d1bd3afd74e476e46fcb8711ec011889ec43b83. 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/b754d77e-97a7-4743-a177-d1cd7e261acd.json and https://artists.proofprofile.net/proofs/artist/b754d77e-97a7-4743-a177-d1cd7e261acd.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 0xd524fd5fab82850464ccd0a136fbd50ae2145352c5d2b43b69f0e6c2b0924500. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/NOAGW0500102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad21467dd8ceb082fe7fef61022b6a048b643978883ecf15fb4c7410fe917b60. 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/NOAGW0500103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26296c8551f9ef63587ae9f625d16a5fe03e30207dcff3a4a5d0f91f558eaf21. 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/NOAGW0500116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb942bfc5aaa806402cc2f8d4504a7b6db976c1de33d75521e902464ba74a37ba. 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/NOAGW0500124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e82e253ba3cb0f9b958c8468d4b27848a3a3f5220894298b12fdb30609683c2. 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/NOAGW0500118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62348635ebaa2411ce94c709a7036810696c919b3ae401204f88bcc4855d5917. 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/NOAGW0500125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15024cb806abb31796eafda39715b42009b555d4fb078a4e09489e554a345b69. 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/NOAGW0500120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcdce86231bfc95857db8025b3066a08809822ba031ec063c491602ffff2499f. 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/NOAGW0500119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ac80248035a05989f2ac7684f76bb62f7c1d8c9ff04a9eb1fe51c0c756ab0ef. 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/NOAGW0500097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63102a5d0d9142f331ebde878e28c69d10f8580f7cd68197191b86da72700d61. 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/NOAGW0500077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8d46fdaf589306db52381200bd5678ed92704ba8f68e894e0656a04d688775a. 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/NOAGW0500098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad21467dd8ceb082fe7fef61022b6a048b643978883ecf15fb4c7410fe917b60. 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/NOAGW0500103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d60acf34f0627d2685ec5852959c24a76d43b7863b31ece0392a0ca881ed0c9. 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/NOAGW0500093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd524fd5fab82850464ccd0a136fbd50ae2145352c5d2b43b69f0e6c2b0924500. 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/NOAGW0500102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x033164fb7351a21ea1618384211130cb8a0e62bd0df83ae013f2e9f6d5d2a0d0. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:55:10Z), 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/NOAGW0500099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x740f5f928f6272f9e656a6357501230f4265aee6a7b82d1ee646a1de30c17bec. 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/NOAGW0500081.