Anya Marina Kroth (born September 23, 1976) is an American singer-songwriter, based in New York City. Her music has been featured on several television shows, including Grey's Anatomy, How I Met Your
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 0x1f87149417a805b8fc7e8560ddf70f7597cfc4d00f59ea7d7d2c65aa2119200a. 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/f1917f98-7e4d-41e7-87b5-e31a5ee462ef.json and https://artists.proofprofile.net/proofs/artist/f1917f98-7e4d-41e7-87b5-e31a5ee462ef.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 0x43fc7e4624374fb7b63f547ded3f27534c2fc683d004fbfb06eb2a487beaf315. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/USTC00902748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaabd24abb55686119aa058a2288b6ed1d27dedff0c16b0131dd5d266ce9fcb3. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/USAT20804161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb394ef3a3c75bb89de28f8e52ad96afdf20e2729b683cd70adb6759a7115a032. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/USAT20804163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x928020b8a265dd29ba74fce019b95f5c38a4e43c551ddf7c562045488687f657. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/USAT20804165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8e6867aca31f8b4df5afa9333737cb84913cc82743e0b999af04a7bc5470d74. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), 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/USAT20804155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bad57b3d365f784ef2d130630eb3eb833d08aa4319c17ac2e5d232bf78490cf. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/USAT21200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4de122c1ac02733a01c1828ada66ef90036e834adadf8e6a616010c0b4bb6f60. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/USAT21200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75d54001dc08516e25f694db12e6b03c75ad5175170662b7eb128b18d7a8fdda. 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/USAT21200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x707f1d728b877b3a653737e3ae8436007c02196728b98597fb7a48e890030780. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/USAT21200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf208fb29518b01d718f098c8940a787d4af405bccfbd1bcebb8be2792a9bd765. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/TCACB1460053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf18ec8e59394e0c06860ebd2021ce6802ba4af5cf652838893d3003866d949b4. 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/TCACO1673579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e9d95c492d2d0e9e35db7b75066e44677f1cd14add77f3e051e3efcd883a5ef. 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/TCACX1740662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8055e16716966873f0f73bb575994373878a665a8cdf5a854f1c7c51e4ea06df. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/TCADI1758065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47be99b7ea80dea96cb2fe18a9c22df1fdb22b7b8d875cbe2b08baf980647263. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/TCAIK2498550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75e16d27ad114affc2bbfc5e5dbb7b091db24d620713d9ebbf8c60e17aa028c5. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/TCAIN2411506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47be99b7ea80dea96cb2fe18a9c22df1fdb22b7b8d875cbe2b08baf980647263. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TCAIK2498550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19646c19e86d7d260d51e7978ed5e3f5a3efd5dd82aad2fe8a4eb8647e152e91. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/QM24S2500864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbec07ec28b8e29f5d995cb394dbcf9094ff156419cb48a9e8fcfb80bb8334ee6. 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/QM24S2501007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd8389dfb66e183f39e6f07aa69efcaeb0bd26ef7deb3b1be4de9887643d1e4c. 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/QM24S2501009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9cddf2f1d7146e2551b5c8782212c236d7745513dbe6240bfc1bce888262583. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZWFH2518461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0106f764b7c3934b71e03f0dc8d0c37c276c2e5aa54d6d80ee3cfae188796a80. 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/CAPF61500012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x120708652607c31db72127c80e151520964f87a8491523f7c182833b25852818. 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/USAT20902223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7192222bcb906d03757ed1ebe6b51546193e9386661acf51cee16370b7991a07. 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/USAT20804162.