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 0x09d1fb066167d0dcd8a31876cea4a0a9d4ecd147b6a08814fb5c1e44655c6855. 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/ce0cd870-f107-4cb1-9f03-f251e4ceec36.json and https://artists.proofprofile.net/proofs/artist/ce0cd870-f107-4cb1-9f03-f251e4ceec36.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
One More Time - DJ Spen & Reelsoul Deep In Love Dub
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 0x591b26e44417ce3a6ed5f7c23d43046cdb03ed55885021fd5dc7f02030efa7b9. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA672100184 — a six-check JSON result.
One More Time - DJ Spen & Reelsoul Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5f82db8196dc8a5ea485dede5c26cd45c0585198606b4aaee2345b0c49656d6. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA672100183 — a six-check JSON result.
One More Time - DJ Spen & Reelsoul New Jersey Turnpike Dub
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0e70ae4b05dbb84205e48a2af9a7fcabdabb9a804460559c578060c70a5e943. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA672100443 — a six-check JSON result.
Strange & Funny - DJ Spen & Reelsoul Radio Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc669ef68c5d958ffaf272e8cda7b4f061fe0c11a2ffbf673aa967f082d51927e. Chain 2 (Bitcoin): anchored in block 960419 (2026-07-31T15:20:33Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UKF4C1602283 — a six-check JSON result.