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 0xadfa72e063733a755f69110d556c6d045931b9ad7517b13e51b5bd0edc9dace8. 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/1d9b7029-857d-453a-ae05-7021d3117f38.json and https://artists.proofprofile.net/proofs/artist/1d9b7029-857d-453a-ae05-7021d3117f38.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Coldharbour presents KhoMha (Mixed by KhoMha)
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 0xbbd334e7fb50679689a84ea36b4eb70985ed96463a3a65210d6b462668c0f08e. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/NLF711603011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf379a3ab548889fd959a2585a04a7fe242acc547aed346954d6a475369e6c381. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/NLF711707572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1a91ac384045f7c79acf1d03a51bd2e872a23685c88951dce36622f3d92544d. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/NLF711708862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75c64279d1278080e635f08d065dddfee6b36777359e45d380e5364eabefcb37. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/NLF711800121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20d9e1b6b411e15d818fb333c59b1d685a1cd43c3d936c739c9352759b1d3f84. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/NLF711801291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07eb2055e55922b2af556a41da7b5fe209a13cbd08b995c53df266cc7cf6bdde. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/NLF711805648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fc954b07d89dcab4b2691ff142fe55486463b42a78522599197b3cb32394490. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/NLF711810452.
A State Of Trance Showcase - Mix 013: KhoMha
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89ce86d547b7c1756a01a413f2960ccd32dc8e82f4d47db62532faeec6013c53. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T09:57:58Z), 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/NLF712011425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60f2fc76d9ec049c374716225b6d21f65deaa876a7331c323c2bf3a2bac8e9e6. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:31:57Z), 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/ZZOPM2105061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x652d1a6e8e7d6e5ae9365a4536d5b410aabeb710cbc2144ed01adc288f0d96cd. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/NLF712108436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cf07cc8d87f131821606b77871ee5be67c87921ea40f1b72065291eb6b7d0a8. Chain 2 (Bitcoin): anchored in block 958498 (2026-07-18T04:54:58Z), 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/NLF712108437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7923f9b942dbb7ce0198cd381f051791bbbd2cf76b7306c413f7dd713fc74f9. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/NLF712109634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa470e94425d1667655beefdcc9180a59e7056aace7e3d677eafa2a75dcc076ff. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/NLF712109633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ae127751ef9966d42177bd9bbcfddaa29704b9adebca654b36b63e67bda9321. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/NLF712200017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2272e6e3bb3df84fc27d3fa23fffbe572c4246cf267b8856fb9c3f5a8b69d7c1. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T19:27:18Z), 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/NLF712201366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff33ce08042a83871d2cde21885ed985245607d0cf30b8b703b2bdf537aab012. Chain 2 (Bitcoin): anchored in block 958493 (2026-07-18T04:34:53Z), 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/CAN132200065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x024cdd7b87bd3b54919bc76680e1ce2200ab6b43bbea009cc1af3b4cd0266333. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/NLE712200481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x161d16835e5135273db52e4f118fed006db831a07f871ec0b01a90527d306112. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T11:06:31Z), 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/US39N2305319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x502e50e2a33fc4f43a2ecc31cfe06a12579e0cf751baa3337e14c8a0638f7937. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/NLF712307549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a50b96a74a8aa374a31a80fd3b178ecc2e9efb18cc9604c4c8707754f24b345. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/NLD682400861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x264adaacc4a643d25006f7e29987e96a417cbf81f3f0f3e345931ce3d6d4085b. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/NL8RL2417271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcd8b7396ae7836eb0635726c09b7939005ac7284ac29d591225496286f95414. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/NLD682401154.
In Search of Sunrise 19 (mixed by Markus Schulz, Ilan Bluestone & Daniel Wanrooy)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa39fb50a9d2e5afe3ce17037c09ee996c0a7325cd7acc27d225d89ba7b8386cd. 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/NLD682303515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc735c75b6af771b051e32115eb95c8326d430663819965aa4f7930fa91064648. 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/GBEWA2103574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe85f0394f827276d82a32e6d0cf121759868af0fbef3569a09b76f3652f0120. 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/NLD681901580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d968e689cdab13ba3c5556660b9bc0b364b55b3c70e80c6ca49745eccdeb2a4. 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/NLF711806899.