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 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
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.
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 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/DEAR41441267.
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 0x156a4fd787072a8803823662686bfaf17a0476991197d403609e3da3d0873090. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DEAR41329383.
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.
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 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.
Ultimate Hardtechno & Schranz Experience, Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda5baf5e2108c08f98a4e27395ca887cad865a3f1de15f04a48154dfeb3fc655. 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/DEAR41431095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64c7619f4947ec3b1f92ae8f3f74cbc7812d21eab154871c27622ec778d29188. 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/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 0x3a044db11f68d9faf5d6ada9ef42c7e956176fe55070b844b9651493b014e940. 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/DEAR41439040.
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 0x320f451242fa4c94f86d8e1fda5639849e69f01d50afe64c158fb2b583382ed0. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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 0x5499f0a8ac59940a6be0f2caaf9af09ca7da15ce512372101a3671861b307ef9. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/FR9W11001420.
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 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 0x931074b520e46be642c44d94065016526a76c99f6be81c147e95865b20f35a3d. 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/DEH740300180.