July For Kings, or "JFK", is an American, Cincinnati, Ohio-based alternative rock band, founded by Joe Hedges (vocals, guitar), Sam Dobrozsi (drums), Travis Delaney (guitar), Jason Morgan (bass), and
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 0xe7a7f025066941a11e60aa07ff9cb03caddbe708d57a2f31b2e0e7a0992111a1. Chain 2 (Bitcoin): anchored in block 953617 (2026-06-14T09:00:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/19e4cd99-c8d5-42af-bf91-330c93bc4e47.json and https://artists.proofprofile.net/proofs/artist/19e4cd99-c8d5-42af-bf91-330c93bc4e47.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 0xe9e1685ccd7032d5e8169431b1290f3fcba2bbc18023dd50e6198755a7bc9d8e. 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/QM9AA1525076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x565558d044db162049963be4eed20c6b77bca67db6d557dc65428ceea6e0c291. 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/QM9AA1525077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb97a3a677fdaea7d044605eb42b1a03d69ba55fe1d5cbe0c9507dd2519f428b. 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/QM9AA1525078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x573904bcad5331d0e36ed5afe60178ba147ddc1712e580d8f1cf678daf47af52. 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/QM9AA1525079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92f40e227ab7e9f1fe9243cf1e1aa7c36425eb80f24ad560e04725a8492ec8cd. 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/QM9AA1525081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf965c3ecd35ada3669723068508f0c4fd5b783604e710c2ba2263335e64fcedf. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/QM9AA1525083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71078dfd614f0d665e4746c8c018020a429c66a35112719acc6b125e2a36d802. 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/QM9AA1525086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9c09a133abc355f38bf5d1f50c4c3cfb10784cdaee984c853485f4c4ff6e167. 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/USHM20960543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fc1e228a1b9ff2e0fffcb876c5a6cdf34ad55ed063432f8df59e8816304e69d. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/USHM20960544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe661dc8954212635d678489f87c4db66a2fab9c344493f6741b7e44d7f793625. 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/USHM20960545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34a5d773f912d614ab21d73a3d37157e67aee5bc007dbcd052b619089327f5d0. 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/USHM20960546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c0634d0d8633198afeffc0ab5302800ddc1e8a9ab36ace05e79f6014034e1eb. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/USHM20960547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccf3291bbaed998e02f00fd13082f8ac1c02c69cceefaa976192872cc9b3bde2. 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/USHM20960549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0496e0bca8217db0e4bbb403b6f381c40fffe099a1a4c440f3795741ca118380. 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/USHM20960551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa685e10ef722c0e604500b033f75e15e87ed8d075dba44044fedc1d293b67a42. 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/USHM20960552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b4302e78d17feb8b99317df9db2debc9adfe289d753b52bb513c233a08e5ecd. 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/USHM20960553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d83d83ae9bce75b61eaf96cecac3015be509b3b50d2021ce6bd93e875262d12. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/USHM20510476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e5dce1652e5aab489b0fb34bf5a1bcb46a19e0b65b349f03e18efa0e0bacbfc. 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/USHM20510477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13977df525df604b801812cd38e21208b6ea159dd5cce4e3bf0ee0d2a19a1746. 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/USHM20510478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36f913458d87943fb163237c28f5f821da6533304a3a7b9a729af30f0ab57d75. 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/USHM20510479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90c40d34405cc3c543293a2b2eaa97c65f1f64a04e6ee3258b3b22a3c7d6c0bc. 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/USHM20510480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8e3cabdf2b00446ac8d1a4f798ba74455d1e746452ed4c79379615c0fc71494. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/USHM20510481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbcd3eec1314f4f25356c4ec89a10ae27d1db7e8b5a85fc89ce972e163cf9154. 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/USHM20510482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e2737b6da83a8d33dd9ae330c17dbae49bcaccee71156b177d303107c2b7ced. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/USMC10200723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43b2af74add34d90349d2615ac8e30fecd23d47fbd45aa4c3dc7fe9bd12291c2. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/USMC10200755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x356261a6faf257fa7d2211aca8e39ee27949e4209ea7471e9f126daba3404a71. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/USMC10200724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5b50631f0d717e88806dcd03fb23adf3e090eab1a941adeae3851b1d666b447. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/USMC10200726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0a005e88df6eb62dfa1f786738c8675a65d0c139c666f349a8ef83c4b2962fb. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/USMC10200730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9154c5a1d0041e9c731fdad3be3672cea9a701479128652960edcfff4c2aabfb. 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/USMC10200727.