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 0xb04b0cd0ac9ea7094ac3fe6720f3a80e4338df110030dbdf8c4200a426207c5e. Chain 2 (Bitcoin): anchored in block 954553 (2026-06-20T11:51:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ac783633-90b2-44b7-a58e-ca138c3dd2ff.json and https://artists.proofprofile.net/proofs/artist/ac783633-90b2-44b7-a58e-ca138c3dd2ff.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Distress of Hard Techno & Schranz, Vol. 4
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 0x3f6e37fcce1479a023ed1e626a20ba0288101c2c2c631b5b79caa95a34892945. Chain 2 (Bitcoin): anchored in block 960225 (2026-07-30T08:04:30Z), 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/DEAR41246540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x897d7c1b7d0a333f36ee7b04182a840714dc8077b91f6807c8f74c41cf689727. 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/DEAR41329367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa4a51dfde9793b7fb39ecd0e9cd06ef8b969ce36226fcf5b5fd8e52ae4b38fa. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/DEAR41244029.
Hardtechno Is Not a Crime - Greg Notill Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba8d8861604b977e7a7c7d1095de0bbbf869d41fd92bbe2a898dca239dc99f26. 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/DEAR41240384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa07c8bdedb6429684175fc6705e69c00af18fb3517069d7cf8fde8c447551f47. 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/DEAR41227908.
X-plosive Resurrection - Hardtechno Style
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa12073b8d28076081fe775008a6e7745bcc9f0346844e59981560725fb201e0c. 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/DEAR41441267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe82011c8fbe9ac615eb686c09bafcab604b975d80e0f32f70207a3828edfa7ca. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/DEAR41329377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e80434719736d12e5ae36cea8a49a05af3478f15208f0c0322cb7081b84ab47. 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/DEAR41329379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e8b0261f6f272e9860242c4767552eb0e5943bed72a9bcc92adbf8996db9b28. 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/DEAR41329382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x156a4fd787072a8803823662686bfaf17a0476991197d403609e3da3d0873090. 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/DEAR41329383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ce4d2bcda21b635f0b75a2021bac46ed0e8742b0c13bea40f97a51c225cc738. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/DEAR41239995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0452bfadc2b8b683eb92651d8492328962059d1a754fbeaf62a9a059967678b. Chain 2 (Bitcoin): anchored in block 960200 (2026-07-30T02:37:10Z), 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/GB2LF1200095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17d427359e2e30d4e95d548f100a01af3b649a403957bf1fe537e088ef177436. Chain 2 (Bitcoin): anchored in block 960259 (2026-07-30T12:51:24Z), 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/GB2LF1200096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcca3c024f9213d965fce7124a1e9ff051e21e5e39c955adbedfdd83e0b35a5e. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/GB2LF1200097.
Ultimate Hardtechno & Schranz Experience, Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda5baf5e2108c08f98a4e27395ca887cad865a3f1de15f04a48154dfeb3fc655. 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/DEAR41431095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64c7619f4947ec3b1f92ae8f3f74cbc7812d21eab154871c27622ec778d29188. 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/DEAR41439039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d9a1767f2065989ede290b83a289a2f807938b8740e4150872ca3f19273a17a. 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/DEAR41431094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd532691e0e422711a63817baeca727e5fb151469394c574ec0f2ed31bba8ce52. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/DEAR41439038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5c30e5046c62c50dce2454fd7a7e809d7a677981ca21faa63f85e31bb1cd991. Chain 2 (Bitcoin): anchored in block 960277 (2026-07-30T16:10:47Z), 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/DEAR41431093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x809702292f9aa5d7ac1fbb3c78448249fed8a4795d13466355337d67af5fe14f. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/DEAR41210277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a044db11f68d9faf5d6ada9ef42c7e956176fe55070b844b9651493b014e940. 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/DEAR41439040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x749eb88099516ddec9987bdc23b6bf28ac90072998eb43f9fb3598c23ad52fb1. Chain 2 (Bitcoin): anchored in block 960298 (2026-07-30T19:26:00Z), 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/FR9W11415214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bc7c06fa6537c4ade3bb04fe3ca7f61baa8561016ab41cf27bcd41d90c13253. 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/DEAR41519702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe338b16f45399091df68d44f09fcf27eebb7fe4021eb5fa9e38024b6b021f35. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/DEAR41510311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x320f451242fa4c94f86d8e1fda5639849e69f01d50afe64c158fb2b583382ed0. 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/FR9W11409295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef67b4f36646e0f025761bb623f195d6ebc6cb1dfcfcd38d17f2812779bc5a9c. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/FR9W11107935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc25fa60a02bed608c70f44d7c477ec2d4b2aad95c1f731262b5f2af1971981f4. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/FR9W11406844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ef244a1b680add0b96b42a2c4c7aa05388ba3405331638f05ab420e799c0b25. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/FR9W11207081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83df3093a2a8d92f5b51f6076c7c7ee771d2ca13fdf40d0727bc36949f6de40c. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/DEAR41227907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2b978eb2b73cdd0a8f842381b4cb83d1da989ebe76cbcef0f7530a8b03ac2ff. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/DEAR41235731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b56136d1df541840c26a5f4f9d9ef6fc018b532f42770a08c650632c48de13c. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/DEAR41238476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2316f8e104949849ea4eb782943b28b92336305cd81c59b0ba098e64e54299c. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/DEAR41512140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5499f0a8ac59940a6be0f2caaf9af09ca7da15ce512372101a3671861b307ef9. 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/FR9W11001420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4f891c0b025975ac9b1218846be7af984c159848521650273d6a47bc9c37e1a. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/FR9W11001422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0fe8faaa361aee23531ac42f03e300a1fba955197f80c150039651072e38892. 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/FR9W11004565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf791cfe6743aa26b1aeba8d92bda8ef9f8566d6e5c49a787e905316e3a6cd68. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/FR9W11005593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e042cf330ce622b9d1c03468c686ff5d8383038521881ce2ca1c7bd8eefcf7e. 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/FR9W11307556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x341fa28efdab36ce58580c300956864dbd305f3bbebda29b122c1fdf9381284f. Chain 2 (Bitcoin): anchored in block 960311 (2026-07-30T20:45:02Z), 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/DEAR41329568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76bcaa269eb416bbb5acf6debe2c172ed19f1c72e49b9ea8d06e2282b76f4251. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/DEAR41419987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0197f414b0fdca5702b2d7547ceca28b8142f42afde5614a68a363b4abb0b295. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/DEAR41230251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x931074b520e46be642c44d94065016526a76c99f6be81c147e95865b20f35a3d. 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/DEH740300180.