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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x298c0e1d3fe3c75a5a69b9a7260d5ef7a0f0cb977d925107ea654d233c750bff. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3c89513a-0d5b-47ee-9468-0c6c1c038c1e.json and https://artists.proofprofile.net/proofs/artist/3c89513a-0d5b-47ee-9468-0c6c1c038c1e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Crimson Soil (Hemstock and Jennings 2013 Remix)
Child of Forever (Hemstock & Jennings Meets Jan Johnston)
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x129405862647e20ffcac7bb9a790e8da42bb7db97cbeec7f6ff0341c7d3a809f. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T05:03:25Z), 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/QMFFM2401597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd3f042e6ef0431a88aafdb8b5439bb0cb049d6f93e2b549542e725426b22f01. 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/NLF711504804.
A State Of Trance Classics, Vol. 10 (The Full Unmixed Versions)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb99670dd90a680e57750f09b1296196ddba6cd7899a5cc0153402136c15f6e3d. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/NLF711504027.
Nothing But You [ASOT 103] - Faithless Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c66cb4b2308e7cc0c25655aa664438170b5a65f8e50c638cb43ab5b1a27a857. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NLF711311649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c3cf13516ed12d76bb9a39ffbe2e2e8ca22b5035fe130f8df719a4e5b27122e. 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/NLF711503796.
A State Of Trance Classics, Vol. 12 (The Full Unmixed Versions)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68e119dbf952a1aa29a3dc512dbedd767d7852b7d88b18b8670f8212a8b08854. 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/NLF711311372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab2c2709d6e1398b267d782cf2e0b439a64cf27e4cd99374d8d9f074ae1f93ee. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/DEN120301078.
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