Callista Renee Clark (born September 29, 2003) is an American country music singer from Zebulon, Georgia. She released her debut EP, Real to Me, on February 12, 2021, with the EP's lead single "It's '
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 0xb1bc39b3233753d8444ac938a57f92fd694d0c57d9b6be06431139aa1689aa1a. 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/5734be69-a479-4303-9044-621053d6c435.json and https://artists.proofprofile.net/proofs/artist/5734be69-a479-4303-9044-621053d6c435.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Real To Me (Big Machine Radio Release Special)
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 0xde9ece378d56a920552fcc8b48afeb51f01608f8e8dc05d922aa7ccf8d72529e. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USCJY2188001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfed7d8598fcbac007719f1b963f55c8acc8b1602f29d8a5d3d300760dc0ff3a. 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/USCJY2188003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x125ccb263d7ce59054b0fc973b0d7701727d9715ca1af29208042f2dce29843b. 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/USCJY2188004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde9ece378d56a920552fcc8b48afeb51f01608f8e8dc05d922aa7ccf8d72529e. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/USCJY2188001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x125ccb263d7ce59054b0fc973b0d7701727d9715ca1af29208042f2dce29843b. 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/USCJY2188004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb21c3f845b42612c10e65b2ec5950313514e1c6915975c5955c4a9352b3105e2. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/USCJY2188000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d11535ee992405cc551bf90d7bb997cf4088c5e7721025f479da140d4d281da. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZRD92201374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2e1662a1c9f39e9899d9b880e6c2a148ac2308d824c170922bf53a4bc2acc4e. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QZRD92201637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc989a0086d16023e37cc06d7927f5c75d9cd27a67f940928e27a0070bfa76c66. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZRD92201640.
Real To Me: The Way I Feel (Deluxe Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe069a12d49e8e7c20917757be91825557f58128625b75c03eba09b06f8ac9514. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QM24S2307995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75484862804488cd59d3f54fa7939d4e44fd5fa53782a6a74137169b87065a50. 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/QM24S2402852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc30aca4bece66d3bb67c7421de877c88485b930e2bc7817ebffdde50eccea610. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:17:48Z), 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/QM24S2400515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75484862804488cd59d3f54fa7939d4e44fd5fa53782a6a74137169b87065a50. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QM24S2402852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe069a12d49e8e7c20917757be91825557f58128625b75c03eba09b06f8ac9514. 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/QM24S2307995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cb7f7964ffd97a65b85bc31e32aea885b377c1e7732d8b6bf434c89f7b7a384. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QM24S2401526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbac5e02afcf6f2d3f22949a3987cab31f9d70964c9536f7899f75d9b8e2b3a80. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USUYG1379145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde9ece378d56a920552fcc8b48afeb51f01608f8e8dc05d922aa7ccf8d72529e. 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/USCJY2188001.