The Fairfield Four is an American gospel group that has existed for over 100 years, starting as a trio in the Fairfield Baptist Church, Nashville, Tennessee, in 1921. They were designated as National
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 0x1ffc3a5655d926a6058432bbdb47cc37c6929d8d5007198218fc5fdd5ab94458. 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/cee57ed8-2a48-479e-9077-3292acb8883c.json and https://artists.proofprofile.net/proofs/artist/cee57ed8-2a48-479e-9077-3292acb8883c.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 0x63c23d7ea4d19c1429eb0148714ce7d45bef31754f214b471ec04bf4b87d4587. Chain 2 (Bitcoin): anchored in block 957539 (2026-07-11T08:09:42Z), 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/USWB10105206.
Keep Me Near the Cross (Servant's Prayer)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05c83d71777ac34f3d94e4275ab3293e0b2153cf508f6c10deee2b21ce2d4f4a. 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/USWB10105209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ea31a33925258d79f720203795841ece3e26b7edbf9c2ee3f0109b8c0b9b97b. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USWB10105210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4b6e79aa4ea051e8d7503891ca8e5a0f3d2c3747a47255b1c9727dc9f35309e. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/USWB10105215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06bfbb8653e68d63f08d69c001b2eb7194a1142734470fc61e4582a189ce3276. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/USWB19700760.
The Bells Are Tolling: The Old Town Single
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2e2ce9f5262a2cdf1cb29f522f18b69b889680b633185bc47409fb147c274d8. 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/QM6BM1400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bda4fee2a2ed6c4b1817d15fc9362c78d36a7059f5b5f4d72b2614c25724fef. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:13:46Z), 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/QM6BM1400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbb35e3049e1d28e597dec56f9e53d6b9fa94c7aa0ad7061f0fd09c76d896401. 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/QMEAX2000023.
The Old Time Music Radio Show Bluegrass, Blues & Gospel
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda57ddd957c527c96f2996bba4925bf64f57d277527e9ae70d20a60cab64db9c. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/QM6P42220758.
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
Celebrating Fisk! (The 150th Anniversary Album)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x680fbbc2cee075d462106b1c104bce9c62d9cf6ae1edc48f85a5abef4ceefe22. Chain 2 (Bitcoin): anchored in block 960218 (2026-07-30T06:57:05Z), 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/USCRB2000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb79da8d5a6fc63f196456efb44e6f9fc533be69a3f3c7fb476e7ef63299de4cd. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/US3271400080.