Gustaf Grefberg (born 18 February 1974) is a Swedish musician. As part of the demoscene, he is known under the artist name Lizardking, and much of his production is tracker music. He is or has been a
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 0x6670040ad40f081bbcbce724ff774a0bb2e13cd42c7db1bd87078fd79f831c3a. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1886c69c-7997-4b03-9c68-8f55408bbf82.json and https://artists.proofprofile.net/proofs/artist/1886c69c-7997-4b03-9c68-8f55408bbf82.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Payday 2 Remastered (Official Soundtrack), Vol. 1
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 0xe386ee91a1dc257732a618f99a8b84c424c6890d75fc9839d76a3047419644cc. 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/USSR21600247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe65dd551bdd142062e80d9b37f422bd92609e9109827f49802c633111855e80. 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/USSR21600248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78a7f7db7ecf161da73a5f3bffac073b19aa2aab63f56d01ba52c2eb8d99a5c9. 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/USSR21600249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd5ff89a72cac1469b958ec02dd454d62f0fb75eb588b2e36c24d47bbb019364. 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/USSR21600250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x528b4663345d4cddc533043d938f70a2c4f5842a05f8dc3dec3f9f748e5bc4aa. 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/USSR21600251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x705607c5ae9bd1a8fdeace592f18a4f7d3f51769d10b3c03ddf2fa370cf5b785. 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/USSR21600252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa613ecf4900164b8ade623940b8e217b91ebd2b04361d2027fc1e5d7497d5c1f. 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/USSR21600253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8568dbe31886f01f6b31dd671b1a9182dea23c770ae28ab903f3ea20660b0c65. 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/USSR21600254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5cc6fe6876b262c2eab88149c2ebcbfc0b327d17ee1ee2e6018e6482179301b. 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/USSR21600255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x110f7d2244aeeb5ba7e4feaf6447ab9d694a7723a092b7574c82ebf3ab6d9bb3. 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/USSR21600256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7426c7bb7e77107629d2ff58989f933364f1fc7d5d525fcfbb0349148d6091cd. 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/USSR21600257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdd4d53b77deceab472aaa5afdf6fdc7c2c6b608df8fb284b1827872ef249c5f. 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/USSR21600258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c3c4e0c9ef2a65ffc4863a1a048919bd3a680c519c66fa97fc01b0348dc4fd9. 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/USSR21600259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeef63bbf073a5437d0119924b3f8299ec4564b4b6b6c87c88e0a2242f2c4a57a. 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/USSR21600260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e378801d009ae99e128b14bd2ef744f4c04f88b7632b087cc1d7521a63238ea. 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/USSR21600261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9b7559426ced88fbf5d94667429f3906e95b0b915a2454341dde2951a8d7bbb. 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/SEYOK2115890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5f4de637a8e88d1a6891d0aa3be124e2221ce8334b333eccf999ac5041bbcbf. 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/SEYOK2115891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f9362062f4054fcda911d7dbb6ee9e46924b7527abd5f157dddaf9ceb6c2453. 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/SEYOK2115892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e64192ff44819080a0fd2f48864f509bebaa27becf45d180a8490d778feb485. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/SEYOK2115893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d48d83fa37cad830cc1b359bfa217531547c3287d89de72c17b71b290b4df98. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/SEYOK2115894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbda9f3fc81734265c528c7b2210c1339fa069c692ed7c31a6dbabc460510ddba. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/SEYOK2115895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8a973ac9f7ddfb5999ad70cdf7641e19903052635d7d9c30a0e9c10b3c05db9. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/SEYOK2115896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf97bdcea6dad9a391380f751f1a14b97530a34963cf54323727c656ace46833b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:58:55Z), 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/SEYOK2115897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6031ba6a3381f258c215eab407cd3809b9bcfe7cbc17679ac6fcb742bfba528f. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/SEYOK2115898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7745eb39f4f7d1fe600f3b0cc626b50b7b8bfa4506bd7f1770022891cd84d0de. 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/SEYOK2115899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76fd0acd83ddb799bf3db2751281196f52f44ac79e853f31a4cf2be6a789de5e. 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/SEYOK2115901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48f9b3481d1529a72b73f881847050f50d767e746840075bfdb3a7b1e57f1d03. 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/SEYOK2115902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef7d71c8de94ff3873e77c6a178e5c0a639cf38388fe8978ad05584815cd337d. 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/SEYOK2115903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa966e5fbb67bf658e8c972769257f218f2175fb2dfb208729aa4b794f87ed8f4. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/SEYOK2115904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bfcfbbf3af5dfd5a0585b6291a24e330bb3572c199c6fbf8f95a9c19c7d989a. 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/SEYOK2115905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe214daa1a350da91c998bf951162a4f86db89eb59f0a91a5e8ba08790626f77c. 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/SEYOK2115908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77a271d8a1528e4f831d62147aa84f084b16bb529738eb56162d3a483b597522. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/SEYOK2115909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa35bfcabc7130e10d6e15def8d9ed301220a17836f734bea8767e4fd0dd63f23. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/SEYOK2115910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8d45940bc81a47fcc34e5e33652dc7915dafed7e948f30b02440c0df19e6d46. 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/SEYOK2115911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06d63ef674bd78c4f895b931b6b08c3d4b2f6888fe51b62f635442eb0a17b2aa. 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/SEYOK2115912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x889ceee34d1a4ad780be1b014e4f2c35b91dc44e91d2ef867802e825e2ba231c. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/SEYOK2115913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88c5343914c3972464c7c8a65c3375590bdf646f22111f5f45bcb82e57636016. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/SEYOK2115914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7e111dd470e9dde594ce82b04ba6419c2c6ddc54ad381f414638b9aad097e68. 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/SEYOK2115916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc75931753900d3616dadb9802a3340b44dad6e33f1f62cd8e7deac317436c0a. 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/SEYOK2115917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc797dab0c84924efc4d9dbf0593968e90c6e00d03da89547f33eedf4b24184fb. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/SEYOK2115918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe62b122373d72d3f503dbfba695828144edb0af84e8c4e8d6b9c7e48483b7881. 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/SEYOK2115919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad15fc8d2c316fcac94a028f68a494418fb553a2aa73fdc8f5ec6f2a4695b5ae. 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/SEYOK2115920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56db8f0ec1105c82427a126e71e8fa4836402cbe06a8ceda13a8ee78253b56f9. 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/SEYOK2115921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c55814580cc52fb081cf899acfdfc552ec5d5f1b41552d29893b2e8d7592185. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/SEYOK2115922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18380fc5379f7e7e7c4062b74a83bd25a801245edd4f85fe91f860d8a523d901. 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/SEYOK2115923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae09839cccb0fca137ccf515c88529a7e695258f2dc19fde9c0fae1e6956585d. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/SEYOK2115907.
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 0x7c67772a60947cd17c52a53f4ab5707c37a803b90ae3730f209473a28ac60667. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/SEYOK2115915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf367299c51d222aaf4fb1208d7ea9ece84b008d080024b96e8ff83649e279109. 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/SEYOK2006857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a94aa75ee1528420ab66eea3d37a02b81be58b92c6694fc7692d37fb21b944b. 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/SEYOK2006858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcee1a3119175f201427b7cfe86908987b553adb1415d464dc8e29bb84e3a1e49. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/SEYOK2006859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef5e8d31794535b38ca9377d713720780ca0a15030143fb86d3a1dd0ad8cb78e. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/SEYOK2006860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ad36deca0be838bfcab3df25dd5d39b440a6568293fb30698969fed4770e2c1. 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/SEYOK2006861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48087a785308fb2ff02fe728ce9992a1da5c939de53ac18ece373ebbaa20c4c3. 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/SEYOK2006863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb84cc43f01c1981065a3f85ee0cd0d672c8386d6c3fe086500618dd98dab87a5. 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/SEYOK2006866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7540f6e8aadf24a1627773249536992c6f8cbf931759989ffee82dec5791fc54. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/SEYOK2006862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9c764930d526eb6a07f4e03ad7b4aafc7f803ba493e2520a4da844f9a42ad58. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:57:07Z), 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/SEYOK2006864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x382932026f54f72e611a95bd5d8eef6b72f10b25881b3837f71cda64a5ab0430. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/SEYOK2006865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05a41502e3cce1f1d8f8d5f6cfae3cd75263ce44921c7b03383bb9767dd46cca. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEA371900719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe523cfabec1d4d66ad89109b0cba15b88ce54ae7bb7c474dcfcbaeba15aa5ed5. 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/DEA371900723.
In The Name Of Peace (Kam-Zara in Ruins)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f1c4308071fde37e01f3b6e4f724188760465ec0e3fcf3118538c05de3c9bb8. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEA371900725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfd6fac979b8256a90e12e53d4b224971ccadccd0a33ec42ff8386542ec05733. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/DEA371900720.