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 0x2d18412278480fccdc90cad7cfc7ee7e3b2c5559d4f9a607f9a12a5fd8d783f1. 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/77e7314c-59e2-48c3-8022-805612bfd8ad.json and https://artists.proofprofile.net/proofs/artist/77e7314c-59e2-48c3-8022-805612bfd8ad.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 0x4562c3031647f7113d93e2d60564dee16097894985c703294a72b08e17363702. 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/BEB681500019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa4b882cc0df7fb78e0e0a31e4ccb7a3fa7952cbb23b40b45d0be85378bcb433. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/BEB681500116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ae3dbabf2cdffe6d73825a7c7f84b767a7017e277b76b2b2f3bb5f231d8c2a4. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:37:55Z), 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/BEB681500387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f7115632682c18ae45fc49e935b760a2917569b16c0a13405547e49c90bde29. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/BEB681500420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23b0fe975136ca632e6dabbad95dd996873571d7b589417cdf522a06e53f63ac. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/BEB681600323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ed95e794b4254f78593f4f7f8ae4c2962fb89359d530cf9e2dc64b4221d3a11. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/BEB681700271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7794672dafc4222201bc27c0600259d1f4fc13ed7ff19f477d2010f2bf618508. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/BEB681700334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe066cb806142af36632aa17c3327aa67afe6cb61b68ddb5a7cc20d7277522a2. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/BEB682100245.
Hardstyle The Ultimate Collection 2016 Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x086f03ceb9b7e8a6ffb6c52bca46dc909abd7ee9cc92e57a232d48f65f2a6daa. 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/BEB681500474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e8c5586576f4a2ff3300ac45a2b03c835b6315b8ce8ee9176fb95768b087a11. 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/BEB681600415.