Sarah Beth Tomberlin (born April 6, 1995), known mononymously as Tomberlin, is an American contemporary folk musician and singer-songwriter based in Louisville, Kentucky. Early life Tomberlin was bor
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 0xc2e53331d1be8a7b3023aa050d49c0fcbbc1a8b8afe39b4461688a483b4fe275. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ff34b082-ded7-4723-ab3e-69d889cecdbf.json and https://artists.proofprofile.net/proofs/artist/ff34b082-ded7-4723-ab3e-69d889cecdbf.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 0x4a5b62fb18e86d6c27fb61e44d9e929940d9ea28584c026c581577fe4b1d7bc9. 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/US2U62127701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc787c050357c785b4360d181bd9e43c7bcb9c084573f00c342c73f7968c6fc79. 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/US2U62127702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdacb9ace51cd4988a4c6556254710cc32cf69dbee4f3b0089f516e847094eebf. 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/US2U62127703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8241f14b25f4e06d9e54187cfba832400bb4810ef921690160fdfa4580f17a89. 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/US2U62127704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65c584348b326957fe3432378c07c58126fe0b9a22810636b0bdb08cf4693181. 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/US2U62127705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74fda7ab0531d309ca92181bb5ee00763721c26a7dfb722178e4687fbe5eefb2. 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/US2U62127706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bb83b9a6a94555a8654240fb90e6a3c82794f2ad697ce4928c99d3ac5550865. 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/US2U62127707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d4e1afdf96f29c58057247761cfcb0d5ede29b3d2af463612aa3a67ccb1d7a0. 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/US2U62127708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16c10f1e3592198950b78c36e690d80069d7a783fa85af03451661ffebe9caf6. 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/US2U62127709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07c8926602a40a933d9104539eb4082e0550c1d264b0e67b6912d86a74fd6020. 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/US2U62127710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40ed6392a3c00b66bbc9c6626da5edcb2f52d6faca36ccb9e653016b0a8462e4. 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/US2U62127711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d242c265c4c7969491ce836a8d50b6cffbe720bd5949659679e8e47ad1a10a5. 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/US2U61827601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97a2f45c1ee6af922bd7517296eede9d2f42f28b2d28f61abd4bff9bd5370518. 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/US2U61827602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1aff59ce2f0ce03d431428ea0e34b9f6480551097489c7b506d6f3362fb4f3f. 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/US2U61827603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41302139791aef0bd5c84c23dc7198f76c849f049f59c3bb020f2109394c9124. 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/US2U61827604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcae2dd12b89832647e133bd34bd8111a56fb175df5ecc5cfa2e3ea37277cc4f7. 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/US2U61827605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9825289483f3ce1be3a386f6859bc65475671938235eb6331bfd33b430be8c6d. 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/US2U61827606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7dd0356af908e268c2a7a2523cf4664394975834885947d3b5f290146037a14. 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/US2U61827607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3abae761273f22f1f5783f28365b73bd3ecb93a5c378ea1e6c92bcf9fcf4f2d6. 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/US2U61827608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a3c010b8b89b1367be852e944fb4980c746277f9722f0e8aeafc540c9d51886. 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/US2U61827609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc55c366a74aafe34ae8ed76770049106761eee88d5ee6c2ccfd3b68f609bdc8f. 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/US2U61827610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74fda7ab0531d309ca92181bb5ee00763721c26a7dfb722178e4687fbe5eefb2. 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/US2U62127706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdacb9ace51cd4988a4c6556254710cc32cf69dbee4f3b0089f516e847094eebf. 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/US2U62127703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16c10f1e3592198950b78c36e690d80069d7a783fa85af03451661ffebe9caf6. 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/US2U62127709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40ed6392a3c00b66bbc9c6626da5edcb2f52d6faca36ccb9e653016b0a8462e4. 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/US2U62127711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16c10f1e3592198950b78c36e690d80069d7a783fa85af03451661ffebe9caf6. 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/US2U62127709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40ed6392a3c00b66bbc9c6626da5edcb2f52d6faca36ccb9e653016b0a8462e4. 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/US2U62127711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40ed6392a3c00b66bbc9c6626da5edcb2f52d6faca36ccb9e653016b0a8462e4. 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/US2U62127711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x790ec74b5bd455181d5d4b92dd20acebbdadd2c89e9e829e200b59363d50c38e. 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/US2U62031201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38ebfdaee56ece8c2d1eaeabc5343e8ad881f02686067cb99f1acab16ef697e2. 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/US2U62031202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ba35b7c7195dc18d8d92ef90adc64f395236d60cafdc6408e08caea8853fe4b. 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/US2U62031203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaefe9fdcf195f52d5eef75a26c1907f12816580bed89fc74777cca793bd5de51. 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/US2U62031204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa52f065b822042f47e0acb35de08e43b6096ca7f49c4d5e214291b8f0ae0b98. 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/US2U62031205.