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 0x1586830ae6c6b26a86cd4af2a48610a8f287a27d016bfc37f8cabd4fc4666691. 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/08b450fb-8172-4d90-86b0-a9ca9951c383.json and https://artists.proofprofile.net/proofs/artist/08b450fb-8172-4d90-86b0-a9ca9951c383.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 0x98af313e0a208e85084166efcacbda68c684eabe51a0a8042fcc08a29d7daa9d. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLF711500491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4e5c18c5b035785550cf28cb46a8573761bf1edfb95360e74d663c8cdad55c2. 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/GBEWA2302716.
A State Of Trance 500 (Selected by Armin van Buuren, Markus Schulz, Paul Oakenfold, Cosmic Gate & Andy Moor)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b6d5b3cb639b4b31ffab9ca12a5863e406af8ec5f8fd3891887e989ca2aaab3. 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/NLF711302735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x960de7b7065eaaffc9cc1294ec9995555f5ecf1cb15dd6da1849ff5fd9c40ccc. Chain 2 (Bitcoin): anchored in block 960277 (2026-07-30T16:10:47Z), 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/NLS241101082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6c32e7b08b47b27c485c83725799d8b5f2d608f2bb4c369c0c2193222636974. 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/NLF712303519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b6d5b3cb639b4b31ffab9ca12a5863e406af8ec5f8fd3891887e989ca2aaab3. 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/NLF711302735.
Access (ASOT 1123) [Trending Track] - Joris Voorn Remix
ASOT 1123 - A State of Trance Episode 1123
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0aa15fbeb0128c9550089d81d0b9be29d020b0096bfeea0b7632fbc1766286b. 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/NLF712304568.
Access - Matt Smallwood & Polarised Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x102c1c52152f53b52fa4c6c97ac06a20cccbae4776cb44892ed0182ea18bf852. 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/GBJAJ1400626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b6d5b3cb639b4b31ffab9ca12a5863e406af8ec5f8fd3891887e989ca2aaab3. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/NLF711302735.
A State Of Trance 500 (Mixed by Armin van Buuren, Paul Oakenfold, Markus Schulz, Cosmic Gate & Andy Moor)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00cc6bbf54b88087a5f18642ce5b29360075e9a0b27e2dddaa7e5e27afcb37e4. 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/NLF711101391.
A State Of Trance 500 (Extended Versions)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x960de7b7065eaaffc9cc1294ec9995555f5ecf1cb15dd6da1849ff5fd9c40ccc. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/NLS241101082.