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 0x80e0e930a28e843055c7a5d0747f355f27907fc1e6405941b8db26fde93e7731. 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/5c3e5fd0-dbbf-412a-8d93-81097bcc3144.json and https://artists.proofprofile.net/proofs/artist/5c3e5fd0-dbbf-412a-8d93-81097bcc3144.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Nothing Can Stop Us Now (Official Archive 2023 Anthem)
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 0x900365f79543c38748f3414af63fe58e86c0d6167d5737f59b266148249c8d84. 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/QZTB32328420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e7072c12b3a9fffe3f6f2106eb3e633a30364258d46d55c7cb4a34e5da8eec8. 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/QZHN92332299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f46d795171257d7fd63872227739ec4857f2a7a23926b016cb0beb255065a41. 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/QZTB42212617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf9640431d1d48f68d7459f3733b1c41f85559e93ea21ff9e95130e6990f3543. 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/NLS762000511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47bc2f9d28520b92f188fb9d1e3b48f6393b4d8a4b77cd1a70af62deed85ff99. 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/NLS762000134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16965ce5da4fcb310a103228f7d0cdef8600ac15ab3bc3314554789b7dff5c0c. 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/NLS761900679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d694d8cf0947764d2cc90052a4ee157407609d02d99ff47d6c471eebf1342e7. 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/NLS761900487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfec96e0ae5e5de964db8a213fa3cb5876d1377ff0679ad4448dfe17fa194c444. 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/NLS761700301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f1f4dce06624ae0271e529564c7c8d31687d17da140dd93426670037e82b78e. 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/NLS761600313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2db752e33cfd5defd8e45a18680b68e41cc6e5638755cf0a859b0434cb463bf1. 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/NLS761600052.
Ain't No Stopping Us Now / Everything Is Energy
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00400a75d258209a8a64e8cc24953dc251dbbcbcbafa8a271615bd098c4c88fa. 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/NLS761700445.