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 0x34ce5e9cf07d7252e11eeaea13531c170054f0a5db4e2be6a04bf90cb76d5ab0. 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/14da9d26-0969-4811-8aab-768d9a68032e.json and https://artists.proofprofile.net/proofs/artist/14da9d26-0969-4811-8aab-768d9a68032e.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 0x43dd3335842de8cda4414b65d92f00c203c0f31394bff3761321ac4b28284f3a. 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/NLF711100421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cf602a213f4759386cbaf9c0bba66b9b2999733b0914fd6f17a7e9e78bd7172. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NLF711303318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17a1295b42cc7411cf417c3e1b2ff478a99c5ce5352f651ff707978fac35f299. 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/NLF711001088.
Drowning (ASOT 935) [Service For Dreamers] - Avicii Remix
ASOT 935 - A State Of Trance Episode 935
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3e4d0cacd4623ebb42b61304513f04e2fa94a42e9e80df4495c06244d62aa57. 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/NLF711911320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc78cc53f0249326bb2c9fdb92a36fd0abc831dea8a9d28f9e9bc478eb38d5ef2. 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/NLF711100415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43dd3335842de8cda4414b65d92f00c203c0f31394bff3761321ac4b28284f3a. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/NLF711100421.
A State Of Trance Episode 541 (Year Mix 2011)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe50f5a8568740326e75a4e3c9b75438743fe0d5ba63ec0f21451b2dde613b2ab. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/NLF711313278.
A State Of Trance Radio Top 15 - March / April 2011 (Including Classic Bonus Track)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc78cc53f0249326bb2c9fdb92a36fd0abc831dea8a9d28f9e9bc478eb38d5ef2. 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/NLF711100415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43dd3335842de8cda4414b65d92f00c203c0f31394bff3761321ac4b28284f3a. 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/NLF711100421.