KAPS (660 AM) is a radio station broadcasting a country music format to the Mount Vernon, Washington, United States, area. The station is owned by J & J Broadcasting, Inc. and features programming fr
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 0xe89e768d24981f39374f03ca91f0253fbf665e27ef6cf8af53be90b7b1aacd27. 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/a633f290-5656-4721-bbcc-032ae3c03bde.json and https://artists.proofprofile.net/proofs/artist/a633f290-5656-4721-bbcc-032ae3c03bde.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 0xe98b49f6f9834b64a1a243ca448a99e53a00ab87f549f7ae51580d081155e43d. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/ES71G2002658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17fe3b3fd78936fddbdd98c811fceed62bffd28a120fad491340fbcc4bc9c5cc. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/PT3HV2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1602eef54284196ff97a36a9da55c2e69c6eabc355c73c759627e28efd7693d8. 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/PT4GT2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f9cfce0915f95e2a70b46cf555ad1598e6e4cb6529d9aeaaa7cdb72e6e7c452. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/PT4GT2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdff8c4ea9c898e1a15ebb82db80e64cc71523508a90c607469b47b030822e89a. 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/PT4GT2300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a45eaf93fdf3f484dc57ad8e4854008221f2f49b34b375c97d85f6821dec6e4. 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/PT4GT2300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79bb532a9bdeb154560754bf4f8c52962fa3b8acf166f39a6d5c62a7ceef3f93. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/PT4GT2300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cc446ba1d56eaf57ffbefd1949ce738029d46e27beabb266e74e47011219b9e. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/PT4GT2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8c4cb99c02563f511fff07305d130e9628cf3393dc0fa158e2e1f70887b2e37. 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/PT4GT2300015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x924e48fbee54b332f0d85d423d9105f314ffdce52ad81949232fd48f3975624f. 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/PT4GT2300017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4100228810f079bb3a074862d01ff710c538c184e3f08bc08052e2dd9fb2b537. 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/PT2DY2400067.