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 0x8651601094f2d2f81cd2d1850f5ca7c18368f568d6e7fd627d3049f9ed40a29e. 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/8def34b4-724e-4074-9755-755b28549309.json and https://artists.proofprofile.net/proofs/artist/8def34b4-724e-4074-9755-755b28549309.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 0xaa870c37c94ffe4b4cb4fe0e6333318c37f93e09d3f2f93a0672d06cda524037. 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/USHM21944937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b507cbfd583181bc270a1dfc604240aa03d6c69b716608ce063c44b405ab565. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/USHM21944938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8fce905eaa6f41fccaff031a1669d0dceb4fe39aaab6532b66cd8fcf5190222. 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/USHM21944939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05f2438679ce61601dc04dffdf03685e07ccf60915d6a8afa270bc8277f53b1d. 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/USHM21944940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2342ef194731d334f9dc470ac340127295f53eca319789783e789f892fe2dc9a. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/USHM21944941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9866a470ea0fe4a7edae01cee8452afa5d1cc663cad8365a982374088ffbdbd. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/USHM21944942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94a95184d4fd48ddca20b2294797596af36134b8df06b36268a774714e8bca9b. 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/USHM21944943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4265812986161d4f0b130ae1e497ce66d417127636ef2208b4a9d534bd49b91b. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/USHM21944944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88873ee7ed6eb2104463e40c4dce397bca813a59fe8b25eb0ea909779b58a4a6. 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/USHM21944945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48b73a9a3ebd5a0e2aac32182cae03d3b1fe649013560f24f7f1027a99e7421d. 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/USHM21944946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ae1ec1a13e4a1d8e8c8ea7306a0fd38c9176481a313c5e6977ba4c2418e76ea. 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/USCGH2152289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec92b8efd846791c71beb28b388438461e67c1bbf6a32ae5108a6a3aadb20665. 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/USCGH2157419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cc1d19fd4cbc3bbfa0785ac094eb0c6e808e467d66cf7942159dc2d1f417ada. 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/USCGJ2108477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc42b64491af2766e59e17341bdb9be732475936bcc9769c185ccb39d45c8a4df. 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/USCGJ2108478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b4ae7d313c303e5b96561ed42382d842dd2537a4fa286c6819f4025ac3069e0. 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/USCGJ2108479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29046e1fa5485bc1b840332ceab039ca8597a8e18733c071f3b91ee6e8c8b130. 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/USCGJ2108480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeb53d1446683f2b5d73b52db534074ac81c12f781387a9f02c1cdc6302afa1a. 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/USCGJ2108481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d91f7baffe77add4ad86bed6c25eff14982be636c379cd74083162dc61159b9. 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/USCGJ2108482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1be8dbba1db02eaa4245a7cb80409bf837857dd73bb0ea97ec067e4f62cf04f6. 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/USCGJ2108483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7da4230d9f2b46666efa83ddbdcc9e7c503fd428dfd8e0ef49e0825e0de569e4. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/USCGJ2108484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd34a4285ccdab7d4173d0b6660436e4c3addaa3020d4f348fd7b8492dc6bcd40. 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/USCGH2248521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8a643e627d596ef13b8b91d8ae85e8881e736d01022d2b943d380409b05d480. 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/USCGH2248522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec92f29159997158b70fdc5bab1504ef50fd361d9ec69639d9595da3b2682a90. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/USCGH2252848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbf8c1cfb5e031110e90ed89c77c31e673be18facc44b541f32b48fce605dd22. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/USCGJ2302868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacc586fada9fab90f89208a68457de214b673ad836573314d9e22d06c2aa2e48. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USCGJ2303058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa303331fbf1cc0e70203ee7fa10c5ceed393dd01a0f43d665abf760709695566. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/USCGJ2303059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28b268182a3af5477712dca29e9ea260a6c84f4b6e907cd15f1d7793bb8d43b7. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T10:12:17Z), 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/USCGJ2303061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6ac2823dd6d1ef45b62bbbef8d3520e7378b0593f28b4402f30ca9921acda72. 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/USL4R2314725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cff201fdb5f922f777b1ebeb357c0e15dbc03e702bbb97c3bda6337a94a0733. 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/USHM91891713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3c07845a820e23b2d91cabc0e86e9b02d48a25708a72cf652f3b56203edee57. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/QM6XS2200134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e12ec62ebf39d2ce536e990c8f223f700f98ea59868336f7d918c64566402f8. 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/QM6XS2301771.
Spectre (Love is Dead) - Kill Shelter Remix
Spectre (Love is Dead) [Kill Shelter Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x195c4bb640777279836640fb944d9666d35e4b35f962ea2cebef7e46f8b28d9f. Chain 2 (Bitcoin): anchored in block 960167 (2026-07-29T23:42:34Z), 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/QM6XS2100296.
Spectre (Love is Dead) - Kill Shelter Extended Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ef6bac90ad0baba420deb2ea5cd85deb7befc6cf31c0a77330ea2db0a242251. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/QM6XS2100297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84acdfc3de4a861f5855a168f1f7df92ab6448cb1393d05f408355762137910e. 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/QMC5T2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8a9b3576683ee13b51b6d6535e4d5d068859ef7c7ff4b1b4059b4018bdee770. 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/ATR981206512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60a203c26612209be88bd10d276d03d0a80d72af1685499978cdce4b72eb33de. 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/USHM21936507.