thumb|The Fallen Angel (1847) by Alexandre Cabanel|250x250px Lucifer is believed to be a fallen angel and the Devil in Christian theology. Lucifer is associated with the sin of pride and believed to h
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 0x99a3043f4c9d99639a4d16ec811c83ea93171bf6f393a8ab8fb701e9dae39ddd. 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/e84781b6-a897-4938-ae00-269fb924d1f7.json and https://artists.proofprofile.net/proofs/artist/e84781b6-a897-4938-ae00-269fb924d1f7.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 0xaaa5eee47b495505e79f5c11a26e75026d3fa0e59719a76e5435a1c950785ee3. 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/NLT2H2300402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a75cc345f8d426d278b9c72720fd9f699f951139fefd00a0ee3622c622bfe72. 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/NLT2H2200267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd202900d4e604ee0291cca7f886d19bf44bb240a15803c396c293d9b48a6c72. 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/GX8LE2352026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb782b35556a9e00aece49e238d75c0b6fbf26a72840199399e6109f9515964c9. 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/DEPI82217607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75be44a49ec24241fa2a76507435fd86a9f74d82c33b79d6b3db00290c9751ae. 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/QMBZ92271776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd49169dcf5d0fed3d63e9605eabda8f42175d591fd4a58c99e257359a7b7a202. 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/DEE862200967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce5c96c5fd4aec359f5a4a316c6bf143d61ffe87a42539a8e6145792d47df94a. 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/QM6N22252774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x309ddcd131e8309a9a2ba0858e03c94c886c0aa55dffccd9d221e0efb4b7c462. 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/QMDA72155039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cf52e5236bf0eade12a8217b260de39cb8541d510e97eec8cc40ff0c4e37cb1. 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/QMBZ92181754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x936f080d38c82b7c48b9458431ad8ca06eafb849a154a09343c5c4e6c2cefb92. 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/QMFME2161538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b9bd3766127c20b3dca62ec9f2aa6de21fca94d565983df68ab7273a40ea05a. 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/QM4TX2153811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x058443429d37181b049d62e6a893adbb4ea8801849786c4cae20bc641eec7370. 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/QM6N22139415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb266c24e67432262b64704538818c1ae439307d125b5828f367ed986ceb6240. 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/QM4TX2167614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fc1ebcb1d8dbe2d252a6757e12835ce9619f0ea6abbdd45da1c3f703c483ed5. 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/NLT2H2100318.