KAZU (90.3 MHz) is a non-commercial FM radio station licensed to Pacific Grove, California, and serving the Monterey Bay area of the California Coast. It is a listener-supported public radio station
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 0x2234ef9a1a581517dce58b65b6f6f9670862e0f45cd9bd3a935d87993ec7bb7c. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d99c02e2-2688-4fd8-a345-17bea8afa962.json and https://artists.proofprofile.net/proofs/artist/d99c02e2-2688-4fd8-a345-17bea8afa962.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 0xaf5b2e6fb63800476ae805017f3a7ac7a00c9757c82ee8537e1035ad15a396fe. 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/USHM22147006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b07a2e45f7f90e39e172e3cdd83f85ffeb8feac1e6cc8620084647cd0e39396. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USHM22147014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6c4cf68882c4833506ddeae99ca8dc92a08a5dccf10e1222a6a53da28117f4b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USHM22147016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5d9c425380fca755c599f780f6e7f799f01bc29cfe4f694cfde1eec11499d70. 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/USHM22103156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84e164eb982d8b87a5d8cb3664a33fffc16053f6f4d4b1f3c3b72bfb969cf69a. 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/USHM22103158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63a2b0fca241c3a1df8380e2224453230bc351954ddae91de91b71f1e9a49ab2. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZGLM2440996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9f9821db68989488741634ae5fbf5c7325ea550f8b4954801615ea6d7876b18. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZ5AB2442610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85e5ca8278cd104dd786f6418e04d577142f70645cdd7580b6f63b3ee1f1340c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZW9L2357360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73194e69c386e5b79e20917f2a42a0c4a981ff5cdf106128b6e2f4b7118c8e35. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZW9K2358177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe386bc7695f61b97b8cb1533ed8cf83202317e7442bcad68c856673e7d51e17. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM3DF2283937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf321f28cbe5813fae66354193053a85ab2b1251564e3ed4e053d8d27ca90313f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM3DF2244445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadbf3912030f89e1afa67e18a8a3114e563332bbee4b0d643bcb0fa64dc98bf4. 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/QM3DF2244447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59f35b2d83d33e9bf409fc2c6a52b2c768e6d3241ec3e8e4d34dc4174025018e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM3DF2244442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79f8e63c2fce063d0d0114dba871b207abe128b8ed62f586bb166baef5d5fc03. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZMZ92342499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaa4c459763da454d5f85f21a96dc35ce07a5ecc942b0380b8e6a2a08a732ac5. 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/USANG2277189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdc25d28f187f8579c0a88e0e0905669b6114500c70a5d1d2a724f3cfea5ac3c. 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/QZNJX2223057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17a115613f5094a326bec8f4559fa353bd63c4dd087044308c128e358917a239. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USDY42160513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4634ff05c8b1df4cddc8f83a29292855d97acb16c810f4b20ab99a7f58ccd1f3. 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/QZHZ42226650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x914e76510af2087f2029080630c7685dc1aa450ca6a12e77d6b52795060707bd. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZGLM2287219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eaf7966b11819671c9bec58b38d2259e57175aad12f23cb570d8635ca33e51f. 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/QZTPX2174258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2c268c2c0539ecd312053f86c7300e91cf4239d554c0e32ca7560ef571e5fc5. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USHM22102975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8497547d0cb977203d30998d8bfde821a7cb1aee8856211834ffe5592c762c66. 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/USDY42180015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b39b6ec519a54c827e0c3970e4dd7b3869655533c1d8190c1e65d5d7d1b1576. 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/USDY42180019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e994690aa66f19f610fb1faa5e86a5a552da4da67b65d23e1ab7a171348616c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USDY42153494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19ba6d45eaff0d26d5ec06f21f69a28ec6bb3131b917472c9ca050cb96641f4b. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USDY42118241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcaee1a8b9e3a24e6033291cb92612732b3458c3eb7dfe902b12a2f3368255f7. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USDY42118240.