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 0xc61367e1fccf848d49a9ce5818e707a8c6bd14825c92be1ef24e90f37a00fd26. 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/00a7ba00-8b0c-41a2-b48a-88c9c8e2bb2e.json and https://artists.proofprofile.net/proofs/artist/00a7ba00-8b0c-41a2-b48a-88c9c8e2bb2e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Global Underground: Nubreed 11 - Theo Kottis (Mixed)
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 0xcefed1b0a2dee338813df940f1ec595f9632204532bbeab5ce700d9a21b9478a. 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/GBHFW1800049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9c6c7f0c4f5e69a5fe1c6d9e4cc3ab1c969b4321ea68b5e48fb23cfde8a8363. 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/GBHFW1800050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3a3e3b196999b5c5ccb9184ae48ae0ea2070148a896265bb73c957d7e0e2572. 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/GBHFW1800051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa328aa2d9d9753ec66556c2dd30ee25bf9e514e426807550dd0b5961e10e7ec6. 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/GBHFW1800052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e972498a63f02cfc5944502647cf0d948ee298ccc754f960504d6ae7a8c9c5e. 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/GBHFW1800069.
Take Words In Return - (Jimi Jules Remix) [Mixed]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06b100004c7be250ab28f9e9fb6955d15f545e170c324cb313a27e364bd7ce98. 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/GBHFW1800053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ab5076104e51fb7c95413e66c2590b615e7f528d96dd12b6ccc70515f01f1c1. 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/GBHFW1800070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2e7a8965d83de7620435a915fc052155e6baea66b717f12e31b923bfebcda9b. 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/GBHFW1800054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5796eeb7be14cafca9ca3cad6d88ad652f3daf6adc9e44d05a364637c2d06f4b. 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/GBHFW1800055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb57b0d012cc3e9c94fafd93eb903dacb35a333929dea830afd552f3573a40dc9. 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/GBHFW1800056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3838d5cedaa845898d2ad010fcaba7acf522455b97d8884cc76234037ac828d. 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/GBHFW1800057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc16e39d20d9d4d040e6d211a3f741d5b0bd9ef8af58f458d8e87d758f3af37d5. 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/GBHFW1800058.
Parallaxis - (Traumprinz' Over 2 The End Version) [Mixed]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b15fa956f0ceb786e5bd28a06f2dbb17b3635aff6de2aa8cd7b2674ba54a1bc. 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/GBHFW1800075.
Face In The Crowd - (Chris Simmonds Intellidread Mix) [Mixed]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd05ea0f2743111b15d370290675b14bbbc1cd38040fd17b0d4f50ec119276c5. 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/GBHFW1800060.
Sgnelkab - (Mental Overdrive Remix) [Mixed]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2617d78f916ef0802b36e999e6ca72b65b05f45b16a6847aec70660cf19cb67. 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/GBHFW1800063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79ba32a01525b75a40f815e3afb4cb661ad63fb083627f925ca93ddf50acbf3a. 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/GB5LN1600437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60cae63c9ee394f661ffa04d9b93812b0bf67332800f16d9137e3d4687744f5a. 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/QM6P42437343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01ba2ab40b582febf69720bfa8d23ef2d675f2fe6221baa3cecc67a00120cc13. 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/QM4TX2436674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceb2f6a92f3e39daf2e8755fdb4c7f6f96fef1b4f1cfb0d7d30d9c6c6f77081f. 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/QM4TX2436675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb349ec28f35986ba0635241ed96bd152df4e8ee6e71ab8232dd7262b9b33433c. 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/DECY62300106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ed4eb0934537e0c0f833a978729b4ada40fd37c916fe8fcb57f62de6fda5af3. 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/DEU672300745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x961d55e3996bbbce493bad4d07a7b9ff44208ce08d9516c59d834be47b0fcc1f. 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/DEU672300747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4d83d93d1afb3592a95ea595d14bb344e65aa523ed5589183743b6992b883d4. 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/DECY62200053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe31dd864f83aa3c932b69975b751e8b7ccf37237629e16d209ef7fc8a5b2c025. 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/DECY62200044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x618dff47f5f5ed38e828d6501373188047a36859830d0f68916faa9d3f4692c2. 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/UKN6K2003883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48f4c8bff8973950bc8e03db61f03970f931f5610257ec6a38187b12850f1d5f. 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/DEU672101292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x909399e8123b661059eefc3f94182bc204d4c041743f4108ecf6358eba3ec7af. 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/DECY62100034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5252c03d084e6e60180e73c4d2837b6d86ef80bd755fa8a5322f634779fe8285. 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/GB5KW2003365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dbf6d0cb7687782ba811f34c3488aa04b743b7c6821da55271ec5895d05398c. 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/GB5KW2001399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7bed688f284a23f0b29cb02b9b3d070ca38d6e87235ec204adc12a4d7f98e8c. 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/DEG932000124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26b6284f64fb9fd115206eaed1b567a583123bf72e6f07d51394da0da3bf76c8. 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/DEG932000121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e53706564a61f8c3141519463a6028947df4fc4cc0b98d44122f843f23484c0. 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/GB5KW1902105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4437e55415f15b953a0b6d974b303324126042bc45562a7481c4c0087b95d1f8. 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/GB5KW1902106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8977590aa2c462e5bc82d553e6bc593c15108668be4cf707b290eab5d8574ea7. 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/DEG931901540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4da0454d7e72f48a2b9d05a17a2195e62538a13492e070dfb01bdc23cf5ffec0. 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/GBEWA1601710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa35cc22dcfccce38898466d1cf6ff06ba20c9501dcd646440449a68f602831bd. 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/GB5KW1902740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ddd28561d6904ae1e702412d27f8409a82c980cdab18272263e89657277ffe6. 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/GBUM72004637.