KOYN (93.9 FM) is a radio station broadcasting a country music format. Licensed to Paris, Texas, United States, the station is owned by East Texas Broadcasting, Inc. and features programming from ABC
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 0x848b6855b18026879fc4137de60f7c8757b58d48ea56be0bcdb441a553d1c143. Chain 2 (Bitcoin): anchored in block 953621 (2026-06-14T09:42:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1f4da5cc-7ae6-42b3-843b-ba5c9eceb71e.json and https://artists.proofprofile.net/proofs/artist/1f4da5cc-7ae6-42b3-843b-ba5c9eceb71e.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 0x1010c137d985b251637a42d9cc6804b428dd13c38579e0735af6829d3246b771. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:11:20Z), 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/QZPEW2560808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eac010d10feb1c9ee17f3198b79faeacdbd287fd19b63328249817160aa64a1. 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/QZPEW2560809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba41669af7d9f69796676516357e3dbaba813801c9d2255ccc7aefa5112c5068. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/QZPEW2575949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd0567159bf90ea8ba26a6cad1371dff6e74d40d758558df6a70080d757f42fe. 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/QZPEW2575932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfde67f3c59d767eaf53c4c707fc0653a92e5aedce0a6b246e6528dd9ea37058e. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:03:41Z), 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/QZPEW2575953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e0006bf7e5f1b56fa0e2bf16a6c9c2bdf13a97d7c8e85b05ddaef08ebd7dfbb. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QZPEW2572829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ccafeae3feca6413580c74dfd685cf9cbc0f6c8c9c00157460639bd27d786a5. 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/QZPEW2572825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4259116546fecff5d52b8a5219425ddc4c0e5a1d641381158af477c654eb012b. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZPEW2572815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb37578e9a49adccd0c6e155d9e64e74ede893e11057bfdd7252ae9889b59d141. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/QZPEW2599343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x672725bea7cf5efb47035f0288ff1d726b6c940399fcd36687dc4d44342ab43e. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:33:05Z), 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/QZPEW2599345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44512a3d796bfeac32b69648caaa69653c8e9578984f51d9c433d12f07d63844. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZPEW2599342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8caba537aa6af2b49c5f28c83f8df59e853c01e7722b514dc8e2eea9b34b62a9. 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/QZPEW2599344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8283cbfe730dad0ee433667e1de08fabd2f40f7875b9742d5c6ce2f42899708. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZVEM2523767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6468f52bfc66b64db7f3ca05347790fddd6c3b3ad1b875271d99eded2b908426. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZVEM2523764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a9754c80ebfda16ba1f3adc3e4f3c208946844804682ffa88bc1c027310ef63. Chain 2 (Bitcoin): anchored in block 957767 (2026-07-12T22:25:13Z), 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/QZVEM2527246.