Patrick Cybulski (born April 19, 1997), known by his stage name K?d (pronounced "kid"), is an American electronic musician and DJ. He is known for his single "Lose Myself" (featuring Phil Good), which
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 0x1c5f9bf48568170d274d0633f747b19adf629fbe8608675e64f1a0d8862f81ee. 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/924094a7-d806-49f3-a4d5-3da370a2e249.json and https://artists.proofprofile.net/proofs/artist/924094a7-d806-49f3-a4d5-3da370a2e249.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Electronic Memories (feat. Mickey Kojak)
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 0x47741cfd566f00e7d4cefa8b03efa343eb9dae79627cb36a1b724906b7ad3f39. 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/USUG11802096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7700b49996a5003e9b5a2cdee70707fcd41a7bfad727902b0c5222539176393f. 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/USUG11802097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x988563fd18310f747450e9eb20f8f403e411aeb21552b2d661beec4d8a20f340. 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/USUG11802098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x472b28e022035c168d007d63dc41e4e549d061a7ff2772088beaa48e3b1f5b40. 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/USUG11802099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3d19ddcc7a82838848deaae54544c9e42ba6717a9e55df8736bcda60662999e. 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/USUG11802100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ae13b19add2a65ae6b1ed833eb3c5345b7a5f59a976e26867f0d42e9faf330a. 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/USUG11802101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4b713be33c6baf3a9e63099a3b633e27baa204b496ec050b77286447c04cee1. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:58:43Z), 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/USUG11803001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3672eb40142ce97f03f0dfbd1cd12c70e3ec1b404a34053cb16e2fb17645581. Chain 2 (Bitcoin): anchored in block 957658 (2026-07-12T05:03:28Z), 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/QZ93L2057201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a19b1a4d64b669b2012cbce784861cc6cefc09c77e83e00c8cf4fa198f733c2. 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/QZ93L2057202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x949ab1555428e1c15eebd2f887ed2daad9a4eb3bfb5aea6d93a952921e58db77. 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/QZ93L2057203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1f0f321642d42227a52b53c5579527f3db0129e7da6fc8ba1a1e4be78fa0026. 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/GBEWA2304690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1f0f321642d42227a52b53c5579527f3db0129e7da6fc8ba1a1e4be78fa0026. 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/GBEWA2304690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42e0e9e8c76b209d2aec442220d023189254fa51e5888328399c68d7025a9dd3. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GBEWA2304691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeefc872b8b7547a1566ea5751e900dd85487ab17c980e9c90f7d21993a979b3f. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/GBEWA2304693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1f0f321642d42227a52b53c5579527f3db0129e7da6fc8ba1a1e4be78fa0026. 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/GBEWA2304690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93e0a4ca4740e4aecb5e7b504a63200bf9ceb87cea994073f8dc3e8977b55e15. 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/GBEWA2304692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12e2971e4da9f5a408651549a5299510418673f4eef622fcf464680b51a7d735. 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/USQX91702596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f9c5a1ab12fe89e78b0a0d50458d443042adfedb0b0030dcf803704c4e63f01. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TCACT1655296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc3e3b31a285b4a873616a19b45266f52d5f398f1e6bce3998441e6646b9aef3. 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/QMUY41800246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7a299db3652bfe0894dc212ed5a576e33705fb0480631e93ade06c7cb61f166. 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/USA2P2433579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7a299db3652bfe0894dc212ed5a576e33705fb0480631e93ade06c7cb61f166. 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/USA2P2433579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecc25798604eae1788a91eeec919652c134591462daf817911ae7ab105fb06cb. 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/USUS11900316.