Caylee Anna Hammack (born March 19, 1994) is an American country music singer-songwriter. She is signed to Capitol Records Nashville and released her debut album If It Wasn't for You on August 14, 202
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 0xca958b8af8bf3c3c2fe8b95cf1730d2dc6d1dea1765b8cd05e41f3ccd9578126. 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/aa14808b-7d3a-48c5-8033-abe349991e29.json and https://artists.proofprofile.net/proofs/artist/aa14808b-7d3a-48c5-8033-abe349991e29.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 0xc0d39840a0114bdd46dcf3922b0ffe50e8565a8f8a7180887cdd092110b83eee. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-21T22:32:59Z), 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/USUM71822368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x650f02176d8f8fb9c952c8d104df214f48110900afcc6ca874b4c6645e23a136. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/USUM71822366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f3660ffbbeb75739d8cfd0e44791136ba247dd55a316c59b7ead42e9638d504. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USUM72000478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0030127fa4e96e662cdde3557cb180aa73f1d16b7ac093236c9a9a2268e0ba3f. 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/USUM72000477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44d156dada08c331e8bd50abce042881a60297a66aa3588130cce5b2e9f57bf3. Chain 2 (Bitcoin): anchored in block 958487 (2026-07-18T03:43:59Z), 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/USUM72000473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1c43cc00722b0b3d2489ed503a4c346d399da34994461bd55473e7bee3b83ae. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/USUM72000474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7258a80ffa249dffc6d898d653e47ab0349339963de49e47aae63a689c57199. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/USUM72016942.
Hard Candy Christmas (Spotify Singles Holiday)
Hard Candy Christmas - Spotify Singles Holiday
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9de4fb0854a91afe9ca6ba7a11ad983bd68bc3791aee451d6138523addedeab2. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USUM72120982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90ce2d98c9d011d59ed7a7210d029d9f77e3a3cec73cdce81dfbbc4139099dbe. Chain 2 (Bitcoin): anchored in block 956425 (2026-07-03T01:28:11Z), 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/USUM72308662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7b2eaf90d50d59e651abc14bf356ae372a83ee06fb653c0ec3bb5fbd28a24af. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/USUM72219213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b6d23daaea5fbf759c69feeb334b0c7e4ec6fc3808c7d27f0195d7ce07e34af. 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/USUM72410477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7dfcfae05c5bb22cb9d15900c4ece7450cc6f52f44101cb7222a262263ae232. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USUM72409268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82862951159f8873e2263e390faf236e8cf76986feca1f9353d24aca91c2e81e. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/USUM72405225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7df9eaf90720589afc91e8bd1bc7c622a9b098586a94e25a43a6c164b080cf60. 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/USWB12202739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dadd094fc0012625a2ba787110f04c58a43310f00dd136e201e0b091c6e14b5. 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/USWB12202761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8186cafb0d334f47d99ad54231a7b1b7153f546db5bcd8abcd858e516666ec71. 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/USWB12202762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8186cafb0d334f47d99ad54231a7b1b7153f546db5bcd8abcd858e516666ec71. 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/USWB12202762.