KVNS (1700 kHz) is a commercial AM radio station broadcasting a sports radio format. Licensed to Brownsville, Texas, United States, the station is currently owned by iHeartMedia and features programmi
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 0x4c4e1ad65788c8f37081447a119caf0d6f2e3b430963c6093e2abc8bbfd83970. 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/a43d9a4c-bdf7-4672-9063-e33b02a7fbd2.json and https://artists.proofprofile.net/proofs/artist/a43d9a4c-bdf7-4672-9063-e33b02a7fbd2.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 0x657eaae9e6e646080a7a185d8f003c6f72aa5e7ead8ed35f2b615b4e346b4d1b. 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/QZ5FN2244326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf29ae5a712a51fd5aaeb75556ec5e41ff7b9eb756b1fb7aca4afeb49ea467b99. 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/UKXN22530291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39b51cb58187e09d909a3e153d567f12ab4100d7949af9eafed7149d947ce458. 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/BCKM42400009.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f7420aba95ae9dbef8655f22eca963132bd0e7c519f0b4bad51407852b83c4d. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/QZGLS2479507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3b0073366f0acb689cf59e4c13547784253e1bbdddb8ec7aae33c5721b80340. 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/QZW9L2353241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe874d023cd0e1d1e34804fdb0dca020dea819b8221e5e7b5d2b3774b033ccc09. 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/QZWDD2340958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f4ded7311d0a18b20b21e0253a56f37a0e39d3978d5c979d0e627314db7cafd. 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/BXZYA2300027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f867e209090e27ff05f98cab59398571d5a30b6dac6b412d6da27fd92154243. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/QZZ8B2345661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1d9b8ec21ef2fba3fd8854efbc3be539dd9483d3c8036203e56d6c048e34db6. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/QZZ8B2345662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe63e03397466d2e458694e19cc17d7ebb41b38a166599da0c5615689a9ded25. 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/QZZ8B2345664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1349f3d0f85632486c5b5589dc9a061c8d75a8429c7d9d79dba2a4147ce5469. Chain 2 (Bitcoin): anchored in block 960349 (2026-07-31T05:23:41Z), 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/QZWDE2397741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf75d10f9d5dc29a203fcb75f696cfe381de7684e96ef443e1a8d4fef6d11f62e. Chain 2 (Bitcoin): anchored in block 960349 (2026-07-31T05:23:41Z), 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/QZWDE2397747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e0e9f364f09f6dbd279c79a5a475a4b83b72ca9b34818cecc709fd923f10612. 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/BKM2L2400309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12bee6d9eac87d608068986ab4da7f8a689ba29268c4835ff5e405e1a6207654. 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/QZZEB2475991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf7a0be1f0adc4b8647522bd84140df55fdef88d9e794489adbbaaeef6784612. 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/BK3312400008.