Chris Eldridge (born June 27, 1982) is a Grammy Award winning American guitarist and singer. He is a member of Punch Brothers and frequently performs in a duo with fellow guitarist Julian Lage. He
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 0x41dd358b55b8557d9ddb914d2dda74ede5d1d6961ab38567ebd9d076640ebeb6. 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/aba0d9c1-47f8-4fa5-897d-9bcbe70ca58e.json and https://artists.proofprofile.net/proofs/artist/aba0d9c1-47f8-4fa5-897d-9bcbe70ca58e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Hustlin' [Feat. Jerry Douglas & Chris Eldridge]
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 0x2edfc21a7a8bf7f7c4f28da2538544feaee0d14726babe09014c0f8ae05cac3d. 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/USRO22001950.
From Sulphur Springs To Rising Fawn : The Songs of Norman Blake
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef0b7dae1341df7b5ac1294833a1482e26f0dd06857398d63c9db7d84ae18c57. 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/QMKYF2200120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15452e79190477f46d65856c2ac348d20f7098ce8877ad43d2f2947d5cd51da4. 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/QMAAK2085165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2f24ba24a58a0e7a27e02b458dab2a691188c456d0d1a87bb8cda93cdcea776. 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/QMAAK2085166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1bb8c5bf096a8472f26c7850fd0d6b4088c644422bc78dea44708beade32b0e. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/QMAAK2085167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4693b68530124003e65ef48e5286d24ed08d12f6caf868f9b9c14413823ef531. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/QMAAK2085168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3daba555788d84fda79d5c8cd6f894edba428e98057d2c063da5a7c7a1a158e5. 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/QMAAK2085169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd6f58913e5f26eb968e01d35f7ab0b901e1ba76ab4aa29e4e854e1dc1697f4c. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/QMAAK2085170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2b904e4d37cf69d6544ec8384c273626bd098d9aa60b79165f6aa729be9f73b. 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/QMAAK2085171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bc1444c12aaf83e1946dff01177677f48d5425885297c50297fe460ea297ed4. 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/QMAAK2085172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1db93c036c85c1460cdcc426dc3b5c0219589d4cee5027dbe4252a3e201f1ad. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/QMAAK2085173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07e0158ced18d60434733c89e3e760ba47eec596bd8598f59a113a0dc0971dd0. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/QMAAK2085174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x604ac948f3cf9b53699cb34988e6abf5bfa3f06b2315527dc6aaeae30dc2058c. 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/USFVZ2390898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5a3bf6e2f6649bb9acf44ed0ae710ad4f3990bac951a978a159fc59eacb323a. 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/USFVZ2390899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x140b326e24822424e6462f088ba02ef08d932f5de074d84196130e13ef47aba6. 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/USFVZ2390900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95e42fb8b939633dd1ed86d690c9138fd673955822ab379a32cff3d42544ae14. 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/USFVZ2390901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd474002eec47175fa55623bbead2c89aa882bc21d08747587782b23611e7ff66. 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/USFVZ2390902.