DGK may refer to: Arts and entertainment Danganronpa Kirigiri, a 2013 light novel series Danganronpa Gaiden: Killer Killer, a 2016 manga series Danganronpa: Killing Harmony, a 2017 visual novel vid
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 0x47771738ea2b2c8accc402027d5333ab1d72d2b61fddc30a19b0d12a08b8b1a9. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5ec48cd8-bd8f-4824-844c-f82cca1caa79.json and https://artists.proofprofile.net/proofs/artist/5ec48cd8-bd8f-4824-844c-f82cca1caa79.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 0xa73039b33fb26f4d3190b5fd6f50df914495f57ac081291d6daa536e313e245b. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/BC1U32201214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89aa3107b4698ebb2ab0c56b3d3849b574b55cfa9602c95131541f887515ded1. 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/BC1U32201215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed641f608f85b66dd44b24fc3a5199e44840d4a7d5fd5167f8d6bea64aa6926c. 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/BC1U32201216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93f670a264f93e44923cc02b1720f02ef660c16d009c7f2365a2f37b2c032b98. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/BC1U32201217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ed8e4b88fd9cabea76b624064c3b8deb89fb0797a7936175a86cd85bed72fcb. 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/BC1U32201218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x765f87cbb33e7ca6fd1de5fd6b68d14394ac9dd1b3c9521918a1fe587535fcdc. 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/BC1U32201219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05602a8ca1160430af9d8b13739d5d8a66f56818856791348a10ec35a28fd4eb. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/BC1U32201220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcd3ef72eede962f3adb7daed6ae71974722df634d15e9ad2b2ad956c8c73b48. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/BC1U32201221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17b21db8b9ef4cb9fd8ecea4cf96b7082233403fef81752e1a12b26f1929fa8c. 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/BC1U32201222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffdb759d49dd555be158db73877bb24f26b061492f9ad84241504b2ba2fc7ab4. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/BC1U32201223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dad4d1e7675215aae3204e2115f3eca9c8b5efe5193d510de3f423509600023. 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/BC1U32201224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09547debd404ab152ed2b1863641f8aa6c8b19487f12f5ca854c3a41bcf3d110. 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/BKPJN2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ea2ef483b7083aac61a1a778c9300940e7ab4ab8bd19e084e6c5c6e753ab070. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BKPJN2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb995bacaaafd058e4581f3ccc3473a1bd0e743f76d1c6759512bf6ee635afac3. 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/BKPJN2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8352b30399f83066c708865eb131fdf2927da87b0ae26498d16e9ea96be33b11. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/BKPJN2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde2710cbf2cc1ad0cf35e86d9dbbba45e72b6fe1d77f037ec1538e7505b93f2e. 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/BKPJN2300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf102778a4ea243090874afe78667fed9b16ef223345f8293255a6ab8acd36b26. 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/BKPJN2300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a797cfc23ac6b2108b02f2f9ae698e60197b3e8d60fd68e4efda2a48e3471bd. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/BKPJN2300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2538f16c7ebc126eaea5dac3e766b25c1a13e7f8b7dce89139223cefa94c149. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/BKPJN2300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8535fad19d0b1e3ea5b3311602159a2705e585bc02563d9a033a88ee31fc3e83. 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/BKZ0L2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd3fd4929e959fcce0efa3e77c3f0762db632c23e8f4355efd7930a3b4f00fae. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/BKZ0L2400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d586d2a3a01588400dbc8e0d1b66a7af48b42b4a71766b455c18298859728f8. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/BC1U32200736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcf0e008a960fe602edc8694449ad6d0849f4c51edd88d16b7214b9f40561336. 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/QZMZ92413413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x551c053ff7ea3016280192bb2885d9466c2c5ebf47a92375f26b9e078f1b8712. 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/BKABN2300016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce94eb2f095fd4c08e1a7e3d2b821ad0282779c3825f992e960e91634aae2b0c. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/BKABN2300017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c58f40e89f66c66d350b812e01e526cd21013794eb18bf884b7a12ef4477e4f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZNWS2389813.