KIXI (880 AM) is a radio station licensed to Mercer Island/Seattle, Washington. It operates 24 hours a day with a daytime power of 50,000 watts and a nighttime power of 10,000 watts from a transmitter
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 0x84511dd5394e0c5ac2fdf70d151eed7a42b8442082f6064da206cf1808a8e4b7. Chain 2 (Bitcoin): anchored in block 953674 (2026-06-14T19:07:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5e271a31-bbc0-4b18-9598-dfcfff8b814e.json and https://artists.proofprofile.net/proofs/artist/5e271a31-bbc0-4b18-9598-dfcfff8b814e.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 0x0f255352f9154c0da0e7b76644e0b641294e2e76db59bfeba8056da0aba1c135. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/DEWM92111067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98ba2dd3e103d0fbbb5f7170dc4bef105dd5ad078810f9a6cedd306707aa4ba9. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/DEWM92111068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c2cdad5e3894a4f2a3f27a0e505ad97a26ff9b717c8f73fdf396c601251f52f. 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/DEWM92111069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9758f38f3c2062e46bdac7e55c017b56535a77d6a6b02d508152adb3d5881eef. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DEWM92111070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4da013397f51e1fb9b5ec8dcf37afd2eab8778d992d029ae939b054d3eac9a10. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/DEWM92111071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d72476dc09cfa53a2631606f3b672b5fb62890c797e0e601b84cfb9f542e9d9. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DEWM92111072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07d79df1d07885d50b70ab644ddf909c61a0fa93b36d3cf3228f4c3f958b03ab. 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/DEWM92111073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4dd83903ef1a02d821897827ed2934a2cbe648487d78c26627b44d2537c41d0. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/DEWM92111074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3af4dac78ce76be6e8daf1bcd94af3bbba651fed6d688b393478dfef7127afb. 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/DEWM92111075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe657af30ba1c10468eb4747d69d5225b88ef010cb2872636b64dd6b659ba55e8. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/DEWM92111076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50a214bfa913c5d1e3bda75e71b2e614d9a678e87ddebaf9450edc2aea30b3c3. 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/DEWM92111077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x070501646283dcf884d222caa439537be7b01ab72e5d43a0ef7e3dfa1b80647f. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DEWM92111078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ba887d18666c2e8a8fe24e26157088ff62c97933a40afd55d4940784c221c9a. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DEWM92111079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb411cb52c06c3635f5e107b753e4a4c3f8670ddc8664d4abf2d9d0553b133e86. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/DEWM92111080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92e7d7506e5c962f4ef4e5656fc94460a52c51dd633a4d07a2fa7f3377bcd274. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T07:48:27Z), 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/DEWM92111081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0b5f3a29eb24435568e2e2b240166d2631160755819bed8a25993165054f15a. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/DEWM92111082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5be20d4cf64dc34e49700233317aefe55e08a49606bc893c6e63363c18fdd2ab. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DEWM92111083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a35cedd08ba0ed2a7dd0283bd55c61e7af5eb365c099ad943c2cc7611e587b7. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DEWM92111084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1124b572dc7085780e6438241d2d17ca510afd60491bb7ae63d0235d0e1c739. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DEWM92111085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5dd40cc9d22c66d8bddb1a4802810475c18ac475f1d4f2f4ac2242051de22b7. Chain 2 (Bitcoin): anchored in block 958573 (2026-07-18T15:49:54Z), 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/DEWM92111086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa351f6a96a4bfeff60493e30b00043ffed914037e16ed22768d33641fa5d0ce0. 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/DEWM92111087.