Joshua B. Ritter (born October 21, 1976) is an American singer, songwriter, musician, and author who performs and records with the Royal City Band. Ritter is known for his distinctive Americana style
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 0x6d11a1b762c32fe72e846ad575746e4c1b6c099a678a94ac9e55b781ba203aa3. 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/1166b96b-9b1f-4dad-8e09-cbec5b90b927.json and https://artists.proofprofile.net/proofs/artist/1166b96b-9b1f-4dad-8e09-cbec5b90b927.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 0x50768bd46935685d9330d629823f1ab1e0f7299d80d7f85c014c5dbb42fcad2e. 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/USTC40888072.
Tiny Changes: A Celebration of Frightened Rabbit's 'The Midnight Organ Fight'
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64c62bcee3b9fffdfc9b09b486e94cdef33520bf65c5fd32284886a071f0c0fe. 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/GBAHS1900656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15b6c43f6cb26d16c0cda9c0c3912da4d0088f51f4d9cb0bfc5d96868f45f14a. 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/QMFBM2200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc341f78b8a92721a112279f98af2a70a9adea7dc8ec37f609f11d6137645e8a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GB7VZ1100023.
Link of Chain - A Songwriters Tribute to Chris Smither
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x353c87499793fed13c3c906852a9a6c08335a33eb03078a7ed44bcdb5016775c. 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/USFMT1406804.
Broken Hearts & Dirty Windows: Songs of John Prine
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4e861ebf728f002ad62a5aa48af83650e6d36c237d9eb30e8bd22cf52195eb4. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USA2A1004204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0867363c46f08ff9baceb277bf485a1a219efb1d8062a23e6d151ea2affcb5f. 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/QMFMB1700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ce2a5d3ad2c9e19d8670399b456ec091b9f6d0124fa0a9801690447ceee99a6. 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/QMFMB1700004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc43b8befcf8ca269ce2ca701d684a7fe7f48cd9575c421d3e07e802c64930d9. 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/QMFMB1700005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac3646388808378905dc3cc04a1dfcbbee9c14c4dc8ab70757d9ee25524f48ac. 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/QMFMB1700006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f0c69dad3d0eb58df5e3ef1089115927b35138bc83bc8ffe4ccb20bcc71ef0c. 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/QMFMB1700007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a8df0708f8369ef47cb2a32f4896da3aea1d7894242fcafd611ca883d1818ed. 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/QMFMB1700009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdec7e5f29b0bccb5b7daab10f35c16fa4f1748257d2851c04c51f41a4c478dea. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/QMFMB1700001.
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 0xc6f4892ab9c709c75127f56835642153ef0e917915f24002489d6e95b54f46d3. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T14:52:41Z), 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/QMFMB1700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea56e3f9de89f0140ea4023a24d81352e8596887a04e3d2217b8d3f2c2e3758b. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/QMFMB1700008.
The Music Is You: A Tribute to John Denver
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5a8c0cd923c8c49357fc684f105ce8261a16cd0440f493f69212d9d31404329. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/USATO1300138.