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 0xceb0c37ea7744b718e5ba712f298bf8325582176260b064456a93fa1fbc0d647. 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/f5b1a8bd-3e55-41a8-8d22-53bf1b1641d9.json and https://artists.proofprofile.net/proofs/artist/f5b1a8bd-3e55-41a8-8d22-53bf1b1641d9.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 0xebe6b631833f2769227b363fc0eb29837f666f41fe6837c48b576110cf1d85a4. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/CH3132419180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f3a63419712aebf2e16155c50570ea47f5faedf6e94925fa2b71a7c6acd4b7a. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/CH3132419162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7769e8e6ccc77ba5aa38c931bcc71e00127b70b54b1ba6379c03cecd0d5cfbf9. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/ESA012595171.
ASOT 1160 - A State of Trance Episode 1160 (Including Chicane Guest Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c2833ebd863452d3ab2f1a8412c50d8ef004a0961b2df5ca3b2c88e9777ade3. 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/NLF712400898.
ASOT 1163 - A State of Trance Episode 1163 [Including Live at F1 Mexican Grand Prix 2018 (Mexico City, Mexico) [Highlights]]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14bab591b89fe79c060b5c535ccd28514e8154c526325e1071e10caf21e6ec07. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/NLF712401429.
A State of Trance 2024 (Mixed by Armin van Buuren)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa747b8821a55f3b6827d3d75e0a0c2057098375244b08c46e97778ba83d05729. 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/NLF712401973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x495744a0f415e1bf8bd5c58832f381a2515156df5db777064ceb7a1a01fa150b. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/NLQ882300034.
A State of Trance Radio Top 50 - 2024, Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x495744a0f415e1bf8bd5c58832f381a2515156df5db777064ceb7a1a01fa150b. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/NLQ882300034.
ASOT 1162 - A State of Trance Episode 1162 [Including Live at ASOT 900 (Utrecht, The Netherlands)]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47de0c5b7e25dc0db568b64bf72a7268b5b9a7bc5100b693f450deeb7d19172c. 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/NLF712401196.
ASOT 1158 - A State of Trance Episode 1158 (Including Live at Tomorrowland Winter 2019)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67735782d30dd238370deef0d9abc1da9d7b23fc3bf51f94494de25b3744c99b. 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/NLF712400628.
A State of Trance Year Mix 2024 (Mixed by Armin van Buuren)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76714eed4f3a2c86394b39398a3e1b79834aa6a80d5a56eb064735e67597f9e5. 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/NLF712409691.
A State of Trance Year Mix 2024 (Selected by Armin van Buuren)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x495744a0f415e1bf8bd5c58832f381a2515156df5db777064ceb7a1a01fa150b. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/NLQ882300034.