PDK may refer to: Politics Democratic Party of Kosovo (Albanian: Partia Demokratike e Kosovës), a political party in Kosovo Kurdistan Democratic Party Kurdistan Democratic Party (Iran) Party of
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 0x6d633c9cc1b786cb9e8a12b6b4073ae2f0d9457a3a59013731966277fddc3f48. 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/b6d63a7c-6f7a-438a-b2cf-8b2d360928e5.json and https://artists.proofprofile.net/proofs/artist/b6d63a7c-6f7a-438a-b2cf-8b2d360928e5.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 0x6f5c936061b14d5aa1a2cf7284ad01f4fb551886353d896154d9b01e59281f3b. 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/TCAHU2444931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa54f7135335e177fe206911e8902842f6045b35152f77deaef5ed48247e719ad. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:40:54Z), 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/TCAHU2444945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b16891da5b53c223dcf620be9344a4a03a03159e8b7cbb35499a3581bde68d1. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/TCAHU2444959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x815d28449355447148d5ed0eaf2c858a321c1dd890e89743f8bee71d62e7c4ec. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/TCAHW2484095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcddaeb59420790b3fcb60f0297f8b614dfa39ba8d56fe4ccd00666d05d1281a6. 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/TCAHW2484128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c2a9fa17a5a76d8147a31f1f3f9bc9889462c4b06295061c4feb340c8a53966. 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/TCAHW2483917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef76db7d4e2cfcf7a6570489fcb420bd981f245f017e85c7725d506c1ab5db55. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:33:43Z), 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/TCAHW2483923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54b45d5880eaf15fcf15d983430bbf0518f9fcd4aaae898c0e7760512e04b246. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/TCAHW2483935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bde21039f3ddc8a91c2fdc1b8ee4e142757cbbaa3d8e18b7a47c576b4009402. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:07:35Z), 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/TCAHW2483967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b384c13297e199d4fb9ad323610560cacd4dcd234abd7f1e7f8d18cc48aaadd. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T02:19:04Z), 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/TCAIS2473503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabe3c12bacf37a5f4097d4ecdd10d42e2e41dceb514d6bb7b016cbaaeb9a5b00. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:50:56Z), 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/TCAIT2473525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeafd7a8cb0fb3668df24256a811fa33ee1f5aa1039187ca7ac9616f6db2878ad. 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/TCAIS2473552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbcdba15db0af5b0a42f4ce5cd04fe704e67fd8f4f7d501301fd47b03afd779c. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/TCAIS2473557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa24e8c62acea03a77d98c7d4b1c9050f01bb47dbd37226e8ae207fc35e33d494. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T22:42:27Z), 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/TCAIT2473702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c9b0c7493ab4d88e37d201bc0e107f7cf36d6bd39e24d4f0893ea325f259eac. 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/TCAHW2482960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68ffa49a50a2e77f4303236212fcdd596124fa194f50e12110a616a95f8963d2. 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/TCAHW2482963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49941df36bdae05b01cfa8cc98e1745edd6735a9f69d214bece0997cd433585f. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:22:11Z), 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/TCAHW2482968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf0d588622142997e2b8ab6bef6f1a6f58ecdeb976e595b09937d0a38b76bed0. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TCAHW2478895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x497373796d239f1a0be036e2f11088ca9059b2f797b839293f1af6e769f70ea3. 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/TCAHW2478982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ef0bf42d7b8a3dec38f19c51003669caca5d192587d0a47d1fdf737dc396c77. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCAHW2478994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44c50fd59cad2eb63816582a7842821e442126ea2eccf4be9219f611907f5b81. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/TCADI1785337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6af5badd15e8c36cedcf16f504416f83c6fab96b9e4c40cdf44c40fb4d63944. 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/TCADI1785340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeef7c80fc4e8a766a64e26ddb773d1728de6c7780a136f86c461c9bccf77ea67. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:16:15Z), 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/TCADI1785342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x676da06d8e5d03bd75d216ba9607017687c5b5027986edb89325a0d87f78ccce. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TCAEG1937562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7a97f890290bb49b3c34708c9845f5f22c3c0eeada610b6c47fa5ae5f713f49. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/TCAEG1937580.