Jonathan Robert Whitmer (born July 17, 1999), better known by his stage name Kxllswxtch, is an American rapper and singer-songwriter from Orange County, California. Whitmer began creating music in 20
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 0xb8545e88705b68920154c7d1959cc10c822e9ecc48bc7dcdde7d2bb15cd19c06. 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/70acc6bf-3e38-4008-ab0e-1ffa051e2cf0.json and https://artists.proofprofile.net/proofs/artist/70acc6bf-3e38-4008-ab0e-1ffa051e2cf0.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 0x69d1824e3ab719d2f955c366d85465ba3a0cab7e30293f8804b51328563f1b1a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USUYG1464943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc929aeb120e38367620e2888f060daeb8bae48b584773296a547424db86e37d1. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USUYG1464944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb294ac8e3722dde1c4ff49ff6f697badfd93262d0564b2448c098b7330fc293a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USUYG1464945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad0f56701dba734182f237948700df765defbfe7a52b170e619b8675e110f908. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USUYG1427654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40405a4a322d0c4c265501d0f345f15cbb05aef4b878b1f1f52d1a0f20578ad5. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USUYG1464947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x878a22fb3c07ff0165853e05b82907436eeb1fe1ede63c2ae688bc0afd82853b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USUYG1464948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf37623a5a6c9a9396b73698370c6e4297d75651135f229465b970a2a0fbb08ad. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USUYG1420865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2453f263217189e346426f05245b55da3d1feef0cf0232679b4f93f11cfee4c. 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/USUYG1464950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47165aea4b4d0657ab2202a50bd0a752d6384ae58c3f7759ac643e4d139adf63. 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/USUYG1432390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7258fb5ce73c8b3873e1c7deb15abf4b7cac82e0795d808c27ea64ede5159740. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USUYG1464952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54fe1a8cc263a3104c55ebb3e9f69242021a5b73a8d30795d812509a09b5533c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USUYG1464953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffc27423593b59e282c5155e0133fb34e558cb327d132ae7c445969e323e08b2. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USUYG1464954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0125b02455d505ca9b20e8b2bc12679fffb15b9751edc190560606fdee20c21e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USUYG1464955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5efbb1fd8e0b6aa02cbfb1e36dd638866fb176e077028dd09b60371677f4b8d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USUYG1464956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe223049e3cf097f06709cf9e11a4ada3a60c5154591bae16f5266d41da91bf9d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USUYG1446336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3664bf27ca910e27eca768b4b3a3749fd2f61c4d6690722b936a6e0def73b6ce. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USUYG1536583.
Playlist for the End of the World (Deluxe)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4b8b1db735c99b9e921936f83af45c24fb0382f5fed6e9a2ee16075815c70c4. 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/FRX762055876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63aab2c79a56aa373fdb487faa8efa3bedd44549e7694c06cce0f7b5393618cc. 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/FRX762055879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf11c53da42971f21bc6dd2d1e23cc7161affe586c54b97ac171b882db0f1ebe9. 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/FR59R2070937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb19de80657f7076b8dd8defc85f3c0697a2fe3b3036b763a173f129abf5d7d95. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TCAEQ2092219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5f364441323060e7fab6402a42f5a3b72a0f5835a36409b9ef79ffd7ade522c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USUYG1448230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19017b5802f4807cb3cad27f1bbd9ffa44ac18a0d9a782888ff47e2e2a2f2b5b. 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/USUYG1448233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb161e0be517991ed388b163d2144a008bdb67d195f76fc99c991193a511232b2. 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/QZK6L2362637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5f364441323060e7fab6402a42f5a3b72a0f5835a36409b9ef79ffd7ade522c. 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/USUYG1448230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cce7ef6c37d2f8ffa69885d41b443393a8c9b65d65c664e06dff403d2254e46. 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/TCAFQ2131081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x137afa71daf35f2811392a57aa74ffe73a06a463795a803c6d1786c3dd5d9b41. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USUYG1472751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2122f161fa67f13239102b83a308b4545abf3854c3fe0538769955cabd93835. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/FRX762055877.
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 0x1cc478e7930ac5a2c1b5ffd2a1458d87aafc2111cc8ce63c7c4b71796bf5faf6. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/QZFZ41983225.