D2X may be: Nikon D2X, a camera manufactured by Nikon D2X (source port), an open source port of the game Descent II D2x, an American rapper Diablo II: Lord of Destruction, the expansion to Diablo
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 0xcde3aa9a89c6e2bf58ee2d7645b4fec026c42b4f1cf48c4241b21f35fd358b3b. 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/9c20d03d-aea8-4d12-8dc1-f1def1bf1edb.json and https://artists.proofprofile.net/proofs/artist/9c20d03d-aea8-4d12-8dc1-f1def1bf1edb.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 0x3e21317b7ee774c14b6a6aff2df98def365d3e50056dec90544ac5a8dbc2db1e. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZDA62155223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf83a71666b88f137d0ada15a8fb9d007df7bb04f192f01d76370481d512c565d. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZNWX2350283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x630e7ee311eed2915bec299541c58a74b430fd5ccfeac7cb76379352bbf4cfca. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZMER2383215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6796d3637876b7852c022bb60a452fbe132e8d838cb32882f255f4d8dbf6df1. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T03:22:39Z), 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/QZNWX2350284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee63d1aef8f1e0d9d99c4c5fb6c449962563da782d61f9400d6a6ffa67757702. 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/QZNWX2350285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bb329d898c6477b4937a9f623edac87147fb70615cf6048a8e4fd0f0499b597. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:42:28Z), 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/QZNWX2350287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39fb12896ea098daae03d576b9346a4d0126fae0dcb636abecc493d7c9f55976. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZNWX2350288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa7c4d00c239e9e86d139df6dce660ea8a0260721bb5f2a062d348b9ff5d23ee. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZNWX2350290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x488409f3d1ec8d675923b2cd10c35bef109ab4a5bdcc19a2bd442fe127ea5a25. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QMDA62415503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9767e4c403bce78e0f4915075d8a66a28815b0e22a4fa6d1be6157daee8d98d2. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QMDA62415504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7de39b018695167a7f3c915a09ef1dce7344c1e7fd1bfc95da03e3c1015ee5b2. 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/QMDA62415506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefad754ecf4e199f6221c1a95c4e83490cfcb8df5109458c07958b6fa06d9857. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T06:50:42Z), 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/QMDA62415507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73df33635b75e67fb37177facbc0eac0e64445a5359b8051cecf8b1679525d95. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-16T00:38:11Z), 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/QMDA62415508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53d366615b47a54aa2da9aec8de4e4ee10237b6a9a94c4ab1d6ddb4635e231fc. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QMDA62415509.