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 0x9669700a604de9ce7ee546870d03796275f168a5a28a4d6b2c1b59882ace99a4. 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/b3a1fcca-0cc4-4669-b5a9-35a76fc6b653.json and https://artists.proofprofile.net/proofs/artist/b3a1fcca-0cc4-4669-b5a9-35a76fc6b653.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 0x0d8537fdac6e177dd12ea85d607202c831ef2b0d6d77f01d6010b7baa98c2c3b. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/GBKQU2466618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x891882aaccc426e808e8243c2037398407b38ae3058b605ef7cc3e1e86725740. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/UKRMQ2401156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe925af65982fbc6b230b913b63dcdcad548463de520f85b1e83258f15366af5d. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/NLD682403104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d570d1b13c53bc5265a2a83c29baa595e6acbf85c2debcefe77e2a345ad8c37. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/UKRMQ2401628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14548545531a322eda821106fa7cb261c431846541e2be6f7dd9430a6ba37fb1. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QMFFM2500257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ae0b56a550bb944894821a29eda51f29f96dffa0ac8d3308b7569aa96d4f2c2. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/UKRMQ2500975.
ASOT 1179 - A State of Trance Episode 1179 [Including Live at ASOT 950 (Utrecht, The Netherlands) [Who's Afraid Of 138?!] (Highlights)]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85b0cfccad351fc4096dd33bc0e0efbbd5f66c925e1cce5bcaec0303db01514c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/NLF712406014.
FSOE 865 - Future Sound Of Egypt Episode 865
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66b6b39d0d867580c749fd8cdf9bedb9374957a63c44efbc6f2d36b0ec1d903c. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/UKRMQ2400852.
FSOE 881 - Future Sound Of Egypt Episode 881
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3533029f0017afe2ae00029e7d98be120c1bce9c00e3d7fddcaada2b7384b29b. 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/UKRMQ2401324.
FSOE 884 - Future Sound Of Egypt Episode 884
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58a7c81831ff5061fcee46370962d834ba3d2d0de81f030d0471968b539395f2. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/UKRMQ2401407.
FSOE 879 - Future Sound Of Egypt Episode 879
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee55731ac5bfededb1b7892dba5137f77fdf4e04f7b8a6cf7017b1e63bae90d4. 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/UKRMQ2401276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f82d1a4626270cab3dd6faa958907226ef63adde813d211c3974d84346af522. 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/NLD682403619.