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 0x8d875e075818a8b7c68b2484e33cf6e067ce9ccf5ca5432fff80ed18d079b93a. 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/00aa5124-63a0-4e78-9406-f25b144b73a5.json and https://artists.proofprofile.net/proofs/artist/00aa5124-63a0-4e78-9406-f25b144b73a5.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 0x9e018f7ce511df1980a635f0787ca64849db17cf8e2a7d74a943b9c5e29c904b. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/DGA072489645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d2fc53746d294a90fb535fe5746013920506f235ec5f8f9bdf18efdbd4fe1b7. 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/FR59R2354714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x845f144ddf3d8ff9a0075df65550dd2afe7c63cb379eb37f628d1ff44ac41188. 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/FRX872393040.
Nights Of Our Lives - Tengu & Ben Rolo Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29c5a32fef192f63f82992aa479abd11304f32fc5fe7da49338c05b2810ad1b6. 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/FR96X2350382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d21ae986f96d74e23b617f6a562e1aef41cdb5aec2736dec4de88748a3497a5. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/FR96X2350383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e36666a3fbbf17fa6ef5647e33c0fcabd62b1411821805f083e20b0ea739e1e. 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/FR59R2354715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d21ae986f96d74e23b617f6a562e1aef41cdb5aec2736dec4de88748a3497a5. 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/FR96X2350383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d2fc53746d294a90fb535fe5746013920506f235ec5f8f9bdf18efdbd4fe1b7. 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/FR59R2354714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e36666a3fbbf17fa6ef5647e33c0fcabd62b1411821805f083e20b0ea739e1e. 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/FR59R2354715.
Nights Of Our Lives (Tengu & Ben Rolo Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29c5a32fef192f63f82992aa479abd11304f32fc5fe7da49338c05b2810ad1b6. 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/FR96X2350382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d20684f7fe992f0b6597a4bff57b1bc7809f577197ab4fe8cdd8e925e879a3c. 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/DGA0R2415348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb6b36e44939877d24384a4c214ebc47f29e7e8514baebe18683ff870fd7701a. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/DGA0R2415350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d81f319fe72d7374eff151942994e40a7cef1f08c38936f541c777edbc529c4. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/DGA0R2415357.