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 0x65a3d76c220f5084e449dca10087080a09d3c1396c34d45ccac9111cb51a762c. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5859b02a-4b51-4e08-9e6c-a79d0c8a608d.json and https://artists.proofprofile.net/proofs/artist/5859b02a-4b51-4e08-9e6c-a79d0c8a608d.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eacc15f24e5293f9e2f964221b8669ef69cbd58429438c6b4c08779a62c7bf9. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GBKQU1222088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6c36e3892cdb11f63aa9525a2c5cbbde07b6f154ada942936e35d78e137a356. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T03:59:47Z), 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/NLC731900342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90d65250bb12105559627cdbc899da43e9c404fc0394d7c8c0299a0124681152. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/GBLV61900216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab5c328fbff80fa05c356415f6aac6264c9abc17621b13d00dae9fb928388665. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:28:34Z), 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/NLC732000411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3cfdfe6f4666629a06f049e13e2f7f4a80838bbe3a43fda78cbdd976fdd4e2a. Chain 2 (Bitcoin): anchored in block 958124 (2026-07-15T11:00:32Z), 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/GBLV62001698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cea0df4c34bf1e64bdfe8c456bb436d9350f5bf5f56ee3df3e645bffabafb56. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/GBKQU2179505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf593b0ceeaba020f57dba080f3e33323bffa8872a80d29386c6db8d8497237d7. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/NLF712207569.
Playing With Fire - C-Systems Acoustic Rework
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88038dad925bbe8ecedfde831e6a52a991dccd34ddc3e7574e7d3348a5aa993d. 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/GBKQU1588070.
FYH405 - Find Your Harmony Radio Episode #405
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc07299907d2e54aabfe202e40dfd4f3dd873dc05203ad91194490deadf31cfe6. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBKQU2456017.
Am I On Your Mind (FYH400 PART1) - C-Systems Remix
FYH400PART1 - Find Your Harmony Radio Episode #400PART1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6003e0ab31922ac2acc7b02b97d8bf05a18106dda5156b25ca0017ebc1ca8f91. 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/GBKQU2442007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x700df05636866c8e50747e34640f13b4f950edd85791cd2c5a876fcfb1800290. 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/NLD682303385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa9d21e20c80903c5d09f86b04654c29a352b6ac8f12a34e1c1568672430e1d9. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/NLC732200633.
Am I On Your Mind (ASOT 1167) - C-Systems Remix
ASOT 1167 - A State of Trance Episode 1167 [Including Live at Ultra Music Festival Miami 2024 (Mainstage) [Highlights]]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc90ec7eecacb0f33a3ecbb0f1d9893e65ef3cf8e66785394c8977f138bfa2a9b. 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/NLF712401927.
This Is What It Feels Like - C-Systems Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b45af7bd30d42fab72b13e9f98da7c6918f2858d210d65c549757deb3358dcc. 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/NLF712307967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b5b8d72c2a8daca1e5f0bd044c7227a3b5fead13d669beaf5c8c189dd17634e. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/NLF712308503.
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 0x5b6a11225cdd577d65a082eae9c70c9962402d6eb278eb1955e160bab8f927ef. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/NLC732200634.