Eric Johnson may refer to: Arts Eric Johnson (guitarist) (born 1954), American guitarist and recording artist Eric D. Johnson (born 1976), American musician, member of indie-rock bands including Frui
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 0x185ccf4d9f06212f7cf1a5a0cef103c8adec537b13fed2d29e3e022911771412. 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/30383bd6-009f-4682-a2a4-e3c0de2ab11c.json and https://artists.proofprofile.net/proofs/artist/30383bd6-009f-4682-a2a4-e3c0de2ab11c.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 0x72b5acf96ab432f828c3818161d498da0f4fc550d99c3cd70e75766e91fe6456. 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/US27Q0580142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4f681d50e74049b4f01ad34d23847640316b2a5addc905b67eaa3a735e25fc7. 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/US27Q0560843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e7d7adc227988d6145555cc0e73b00071133f6d4247b4da3524b461e5d251cd. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/US27Q0560847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51814114856675bb2e6a22a56ab8e01de783acb2be7653878e5060a2dc49e850. 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/US27Q0560848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91ff3bfbd4e71288f72a626c57baba00e76d732fc55b59a418bb42f805bb6670. Chain 2 (Bitcoin): anchored in block 957655 (2026-07-12T04:42:44Z), 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/US27Q0560849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f755a0b26d25acdee39690db6120e6ca89f9350c28ceb4f622b4203ea3290de. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/US27Q0508413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf06a5304c5edf2fef79702c046e4ef7211d89292aee66be4902c050518fac5fb. 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/USA2B0715601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfee6532d360d17b8a8a8352b38a703cdb5a3ec846eaecab638411497bebf1482. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/US27Q1061961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ceb0db2f6de1645195560c90da847838d0961770f9f81bc87b0de1d1aae50c3. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/US27Q1061963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba8ae931f9231ad03bda1d3a115217d3084f50664ad9e0f3961d21aa302eff99. 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/US27Q1061966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7eeb1cd1033bbaefa261e56b309056e2d2613905317600362be16e5903d9327. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/US27Q1061968.