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 0xc30e87af9ab1fce45bf18b47c7108a92137d3bbbc2f8f5f4e91b029e8283bfd4. 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/83e3ce18-d731-4128-a552-7e6005d3c58c.json and https://artists.proofprofile.net/proofs/artist/83e3ce18-d731-4128-a552-7e6005d3c58c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
A State Of Trance 1000 - Celebration Mix (Mixed by Armin van Buuren)
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 0xc08b969d652eeb1a1d34322053c5006fee21b2972f5f586b941fba34f7550832. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NLF712100467.
ASOT 1001 - A State Of Trance Episode 1001 (A State Of Trance 1000 - Celebration Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc08b969d652eeb1a1d34322053c5006fee21b2972f5f586b941fba34f7550832. 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/NLF712100467.
Black Flowers [ASOT 445] - Aurosonic Progressive Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f346c70d839ee0650535e945d398d25f00c145164468f2d6a562cc7348398e3. 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/NLF711303509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29f1ee5a65426d891eb7f4241e725027cccdfbbabc3f928c1e296cf2c825a727. 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/UK9ZT1900069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7656bdca07ecb3399648f998a0f435c6204caf6ee388e4107fe19104a50acdd3. 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/UK9ZT1900065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b2902c99c4e7435fb8b24d89e99d96cf175d5335749874eaebe1c1735e05d21. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/UK9ZT1900070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd768264185fb1bdd0818a2dcd44ee4262be2cf53280a4efa17dfbce52b70ebf. 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/UK9ZT1900071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x345f8c1031d292ff3b14baffd549bb737e5d51344994a9ba5b87aa1c73f3728d. 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/UK9ZT1900067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc838eb12d50fd6093c5a634a88b46b78db91e28008d0306006cddf12daf7a74e. 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/UK9ZT1900078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65592d8e50468f9b981def9f0eb3f1e2be7472c254e0daffd349b89c1f28d001. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/UK9ZT1900066.
A State Of Trance 1000 - Celebration Mix (Selected by Armin van Buuren)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe40ee1024fbc72f0b62e0a5b23223f170a091346f18564936805d51373fbb398. 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/NLF711505751.
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 0x528bc63eeb031d1cb4d74481b6685add72c82884c4ab37da368ee09b24039b75. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/UK9ZT1900068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7168c7e620329baedbaad0375a52f9c9ece28107b7469ad2035a3e0ddd7df59. 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/UK9ZT1900072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x599a847bff41859523e133f9e85b78adde0ec057ab2ec5941b7ce22aa510bfa1. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/UK9ZT1900074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa667cdec10ad48f06cc839c90be091c8f8b98d93910afc3a35d765eb31eb926f. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/UK9ZT1900075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92d821cd9b214e652450206f3db8327106f742a2a799a9adea93c24e2c922a01. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/UK9ZT1900076.