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 0xa1822f5547dcc2ea619a84e7576fbdd771c5ae0d356dd4b3bc4401cff0e4a640. 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/7167db5e-f96d-4beb-8554-816f39cdaa32.json and https://artists.proofprofile.net/proofs/artist/7167db5e-f96d-4beb-8554-816f39cdaa32.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 0x0ebd3d951827b43db9f6292c0cc3b1c870c966e999a67e3ae1f57a564535f501. 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/AUKDT2300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ef49e4d4120c75ea6f8abc39757e40213846648086579deb19129062e9da3e1. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/AUKDT2300017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3c14d6b88757700f4ee3234e6d4ecd56fde753d853c1a7296bec02a2e4f5616. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/AUKDT2300018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cf5aa6716b7f83d4f6945c35d87f62a16868c8fee15da1f18708dc85aaf8183. 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/AUKDT2300021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b98951752792fcd5e1e03a5c8cdda198b78fe80f35b974789e8f5c74d273ef1. 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/AUKDT2300022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbe9ec63c26ff06a290fe409a29002a63e610a622d3dff2e230ada2bd22d612e. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/UKR6V2117052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0876f481f32a30a38c8d43b1eec12368dd6b99de6fa714fc8d8b43db85ca9055. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/UKR6V2117051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f32381780a5e3715b38aa7b6a93f48653a47014e9a47cb426516409043d3366. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/UKR6V2112707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99e74247a4e4d6511e153854a6cac8d4ca54cad8f955aeba4644caf94bc66f4e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/UKR6V2111256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1053e3e8f85dc20635510db2d61b3328f1b0239ff2b433ccb01e4df01cb3596b. 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/UKR6V2111257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58bba633a33d27c66d08bdd433c926c9549a41651d4539a753d890b3b43cfb74. 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/UKR6V2011230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe49fa140435faecee9efa9bcba6a71ab909f74cbe6d6cbe6b33ee6bbcade891. 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/UKR6V2011233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e18ac899a7f5c0239cd6c8c9d9e1d4f2369ea081e80fef677fb5a10ef406f0f. 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/UKR6V2010022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea2171ba813234025b3f7ae54a4cfde494a21fb8875dcbaef2f2fcce95b8afca. 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/UKR6V2010026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d43bdf1ab331c5d85cf3f49250f1dc847fe3f386885ccf488bba7c45f3315c1. 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/UKR6V2010028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcde10a6b2f8b1f75a9e916df88a7b707bd55ebb3032a3fb6cd0723062049a74f. 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/AUKDT2400570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93b8810497f3b8d761ef1cd63a3c4bc748a754df418ad0f853fbf0002cb3d2f4. 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/AUKDT2400568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeee00659f608560eb493a2e08b3764e7734ac0ba0c870f3ab42b8c2c91536315. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/AUKDT2400501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cd14fb99eb5a0ac1bb20926a8334d3a90e1ea1443288a3a352a49d59ef8cfcb. 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/AUKDT2300736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6f28701774d157dfc570d19e88b14e040696bdb55afb3ca099ae6ffa326e95d. 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/AUKDT2300738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c896fd48ddc0a69955e6572011292cf5c98bb6c36157010ec130f3eff820a1e. 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/AUKDT2300739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd93f56cb7c5f00ce1ac0884374f7e0bcc09e49328772203cd6b8e5a1f9420b74. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:07:20Z), 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/AUKDT2300737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cd14fb99eb5a0ac1bb20926a8334d3a90e1ea1443288a3a352a49d59ef8cfcb. 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/AUKDT2300736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x961dafbaa8aba9393f65660fa37046bc2aff7afe2cac0901e7d2528eba9bbb1e. 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/AUKDT2300048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ebd3d951827b43db9f6292c0cc3b1c870c966e999a67e3ae1f57a564535f501. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/AUKDT2300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc18af6c0b9920392748b944db6e56ebc173c8255c14252453ff2b908b0e5dfc0. 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/UKR6V2213836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x562628c910b2c33de6d45f1b5fd053db73fc042424c15dfa9b2ed73a365d94ff. 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/UKR6V2212466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe30ea23c222d6eb86ef4be1163ccaf84ede87925ae9c581bc3410bc11afed50d. 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/UKR6V2117579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07c9f25aaab48ae189412c20d83c6bdb2ba10d24a98adab8f7ec9dd71cc7c7b8. 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/UKR6V2213885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x742645d11d4248c7711798090cd57f0045ae1654803fc6b21a27e6f044864095. 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/UKR6V2213889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fe982636e255e963f21d81ac7cb96a91557abc6f32d0df0f5ece9c4af2c95e0. 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/UKR6V2311398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac39968d335139c1d62d3d20e04378cb073f760974659e8aab55a1d48ebc2ff0. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/UKR6V2311401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cebe433a2d0eab5fa1b24fd336bcc834ba07fb180e085415b8445b7fc6fea15. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/UKR6V2311403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa045323c78f0cc786762bdddc6c969e9a3d377d96b58c991d839f64419a8fee7. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/UKR6V2311405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf28e28e98fdbbdbdcf21952192204d3d24c7538e62bcd2d4f169cb1fdd77a8c9. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/UKR6V2311404.