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 0xd397b34882d7453b9eaee805380d28f036a91668c0cae11f9dcb961eb48fc293. 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/e02c8595-3ac3-472e-8bc0-952f9862af5c.json and https://artists.proofprofile.net/proofs/artist/e02c8595-3ac3-472e-8bc0-952f9862af5c.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 0x14afabbaf14195b42530e9bb1c68f6a10e651a516b398b721d8ffb25976205b4. 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/GXD7G2390633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7269d7d27d850298aafcad86c51546b63f053a5b54b9b9c192470e1525583c50. 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/NOG842404040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x709ecab4d777d441cf25a89319cd5286536691fd5ffa9c784f6d926db6606c52. 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/NOG842404050.
Barcelona (The Unborn Remix) feat. The Walkers
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x819c2f9e5264b157860117359abc26f2df702d6ec7ebfc7d6e6472e441029122. 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/NOG842404060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa79ec8cec5106a581bf5a324311217b5a90434f741db6473484d0cf65eae827e. 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/NOG842307010.
Better Off (Alone, Pt. III) - Timmy Trumpet Remix
Better Off (Alone, Pt. III) [Timmy Trumpet Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bb0f473cfe72ec38bc7ee3b2545dc14e0129a9493af8190d9692cc748247c14. 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/NOG842319010.
Better Off (Alone, Pt. III) [feat. D-Block & S-te-Fan]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b2c3cbe4b04ea96b5b6d266ad7d8cbd4cf44516998aa9d81657032cf6a7ece6. 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/NOG842314060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f5bc3716d7e9c80e71e7f19261c2d8fd6f283e9886104b0d8d44b8f550c02e0. 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/QM4TW2477263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x847cd5c08f6d83b836c957173bfe5d3028e7443fb93a9e6f4cce66d29b3e0305. 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/GB2LD2510075.