Amber Rubarth is an American singer-songwriter. She has toured extensively throughout Europe, North America, Japan, South Korea and South Africa. Winner of the NPR Mountain Stage New Song Contest, h
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 0x8bf62cb867a7486996742e70de9591ca239599e13984d9d4e9dda4d4e67a00e6. 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/5778cb02-b673-403e-a192-04a2693a7cc3.json and https://artists.proofprofile.net/proofs/artist/5778cb02-b673-403e-a192-04a2693a7cc3.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 0xa50d09b0c23c5ae75d7d2044f6637508c5f582390a963208651fc4db5d3039f5. Chain 2 (Bitcoin): anchored in block 958882 (2026-07-20T15:37:31Z), 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/USHM90894209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bd2b44f02bb60498a82387cff039e2a339f6da5a79ba28a025eaed6c4edd0b1. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/USB6L1100013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10c913d99b85ce8de1755d5e1a590759c651a5dc85596cc8abd6f7d567b2790d. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/USB6L1100016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fe70c6abc4742b067956e171f798edb5e770f71e3c2bd596e6499217028c175. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/USB6L1100018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1213251a4b9d0fc398e4ea40f02038076338680efb8620105e8f202b9da4cf67. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/US99C0535603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91624505dae5e1874cf5f347ed3b94c42ac8b98c8343f64f6f44b0442bcdc399. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/US99C0535604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda2c7bd85a1a27f17759d469b30004ffddd33358cee55b724a8a13c3e228f8b6. 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/US99C0535606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ecb70a839e16369f5c8507bccaab3e3bc7b5cc1c730657c36b7bea5341a9cf6. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/US99C0535608.
Dr. Chesky's Sensational, Fantastic, and Simply Amazing Binaural Sound Show
The Edge (From the Award-Winning Documentary Desert Runners) [feat. David Peters]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd63d68998b6546c8a59f6b5dadba54c4384b429c60e976d4163209fa8ab669a6. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TCADG1798358.
Fantastic Fungi: Reimagine, Vol. I (Inspired by the Film & Mycelial Kingdom)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7a24eb51fc23bba192877efcf42d9fecf8b6d6ec8da6f70ff6d3d5ca2ee56b8. 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/USWS42021105.