Rachel Eckroth is an American singer-songwriter and keyboardist from Phoenix, Arizona.Regen, Jon “Talent Scout – Rachel Eckroth”, "Keyboard", San Francisco, May 25, 2018. Retrieved May 27, 2018. She i
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 0xd0dc39beb7544a476175dfec265b27b260804f5772b3f4f0e0a9b8174143f822. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7c800529-7063-4cd2-b667-94aa60d3f9ee.json and https://artists.proofprofile.net/proofs/artist/7c800529-7063-4cd2-b667-94aa60d3f9ee.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 0xf8dc0160ae47f48fe94cdf3262e742c8ecf1e7fa88ec655ed974dcaf05983b88. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZS362100657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b508908aae41882ceebec1991fef8e534f3dbb789128e1947c71c60b2c8561b. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T17:30:54Z), 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/QZS362100658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98a0530ef573e1b29e60e509546de63f13b15c7e962f77ec61b4cea9b30862d6. 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/QZS362100659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5b5e182dcc329e3a43b59bca4af1b05e5e33c1aa0ce7c9c7d7b9d703d3ba241. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/QZQAY2599130.