KSUB (590 AM) is a commercial radio station in Cedar City, Utah, owned by Townsquare Media. It airs a news/talk radio format. The station's offices and studios are on South Main Street. By day, KSUB
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 0x13fda18b37f331c96110cca37e067e1925fe6b7b2773907377d193b6954efbe5. 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/ab35df30-74ed-4e26-b947-368096142bcd.json and https://artists.proofprofile.net/proofs/artist/ab35df30-74ed-4e26-b947-368096142bcd.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 0xb18994e886dbfc9f3be5e45d37d16f88dd60c8b47f3a536cd0333d69ebe1665c. 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/FR10S2193906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ff8fc036e5a1915771dcca72423f42ec0ca062a7e58baf9c5edf1d307967473. 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/FR10S2193907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfae27832242379500eb91a4cf95a5bbdb41dfe356f47e6697fdd23bf8bd51abf. 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/FR10S2193908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x205912b74825286bdfcd308cfa1fbef60fe15c059d5eb8621120641d67df6db6. 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/FR10S2193909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc702c403dc99a950b002b3c1c4c67cb8f4e3ff9883cd4f6386389583a15b9ac. 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/FR10S2138981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d5bbe64ce4e8cc3ff051e59ba7906362034c789c50e1f4e24a5e4f60a928abc. Chain 2 (Bitcoin): anchored in block 960145 (2026-07-29T21:13:37Z), 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/FR10S2193910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde8f4a6ef6db154ae203cbe867f01250365b6c330ab2f4b66f0613b132fe6afa. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/FR10S2193911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3e38144ee7caf759231985a8c68c1897e6181fb33062e6c393d74095f2a371e. 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/CH6541675486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf34e39a458d1dab1316e4c9de42ae750fbcebc772d66881ea8304af1f5642429. Chain 2 (Bitcoin): anchored in block 960157 (2026-07-29T22:12:10Z), 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/FR10S2193912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09eb9ce7f52a98e00db46db05f2710e921e9017f877299cfdb87dfbcbafbbb31. 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/FR10S2193913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf68bb808634a5c1a76feff12647b362e4a4cc3b8da47a862ee1aafbd5b2d2515. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/FR10S2193914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe101d70fdde8b3862e31a5d25f7ee05e3b46cec70235679eff46a24a2f4ac8b5. 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/ITYKP2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x160a70ca55b5ecac010ba4c9df9453c6f110e5a75b0798bf42829df7a015eaee. 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/CH6542237299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a8867d228c8d95b0d2ae0c91352415056c6c1f5417e135d4f97357aa2326926. 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/QZDA52106939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x412aef55eb09fd1254e6552b6a7e9f9795aa2c3af3bbf51ec5bb700ef2aad635. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/QZDA52106936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae35a465a76d1bdb1090f30b5d8d852e7cf55569d4e340020dc553afe1d94e74. 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/QZDA52106940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0c2e4b12b2a9bcb3ac8959ab6fd12d9cc699271f129d32ff6c6242fb925a557. 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/CH6542219303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb88957c4d22c06d97dc74a1059c56e89c018dfccd9d958798459a77816df72f. 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/ITDF62302005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6990cb972fe7407adaa2bf3769fb0b1d1da93e373b9ec5517b1517327db6a272. 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/QM4TX2260562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5f7ffe47734f4a9535f4de8dabfb8e2014e3b9cfc4c3a846bb518ada9f8f7c5. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QM4TX2260573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0c2e4b12b2a9bcb3ac8959ab6fd12d9cc699271f129d32ff6c6242fb925a557. 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/CH6542219303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1adeb1d267e58561cfcdb08296ebc9aa4ad7a5b268bf0370a1498623c64eb507. 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/QM4TX2260944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x115739e6046f4c6ecbf551e9833c11de6bb38c888a31ea2aea48c7ee52622c5c. 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/QM4TX2260570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ac4709e161d7ea2092954779255ca35ff72ea52abbb0cdf7c8799260c32f0d2. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/QM4TX2260863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9fb982beee35e77a2a0fbb70e62fa29ea5946e756e4ff8eb8ac1fe3d935a820. 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/QM4TX2260968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa413065e699d179b5089eaee545e7a5638312116282845d85fed73b9125221c. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/CH6542173804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9445a9ca7a373f46f1e400e92dd2209b327d3eaec359e27159054fc015440a76. 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/FRS182161792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb373cab0502bf8659501bdd21bcdc063fa9c8604411a391abd586102be6ce09. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/FRS182110729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb82a253a1ff05b771a32a1b64ad816324fac02a3475cd46f74c99c9368e657b7. 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/FR96X2130619.