Jo Ann Castle (born September 3, 1939) is an American honky-tonk pianist, best remembered for appearing on The Lawrence Welk Show. She adopted her stage name from the name of an accordion manufacturer
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 0xab706dd2c0364fcf154c9ff7a50cb59b51e3cf218bb28cf8cde601d20ca67a87. Chain 2 (Bitcoin): anchored in block 953633 (2026-06-14T12:47:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3461aaa3-8849-4811-b109-b653cee1b6b1.json and https://artists.proofprofile.net/proofs/artist/3461aaa3-8849-4811-b109-b653cee1b6b1.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 0xcd8f352bb08a04d0cfb310263a5a9d8f5398c7537ea8f06b84d25ec534a13a63. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/USRW49505472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa557d6b67b0dbc3a6e929e786ae85d2943a52d0bffa1a4d7b587c5bb93f75e4. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/USRW49504248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11942165f8ecc5b2206b096875126535f70a71c9d617548dac9dc24e044d08d3. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/USRW49005027.
Monumental - Classic Artists - Jo Ann Castle
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d25f7ecdf028e112a450f4aacbb3950ce57f78112791e1697243f27a4590636. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-19T23:58:13Z), 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/GBH5G2000115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x948ff389b7ea1970ba5ec2d60f1a0aa667220f35427c46cc6084999b118b4bf5. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/GBH5G2000116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfde791b8a5e83e8f07ddc22a73efcb56af869e4c2ad1be78c1ed3a08983f2ec2. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:58:43Z), 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/GBH5G2000117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf937f1d68aa3fa3f4ae92e88e621a0dc7e45fd245bcf5724c40b0bae0455861b. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/GBH5G2000119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacb8e3231ecff04434719f438be6243a1ed8e0f1e5209f006eaf56d64c478c81. 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/GBH5G2000120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b9fc0fb9978811cf2e10dca67f9fa1f8da906c84f45a9c1ca9df64576f80349. 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/GBH5G2000121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3c7249973b6620f8466ed6d72ea60c318d39a0814163d13708c2576005622b3. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/GBH5G2000122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x200373a8782a703f9bdcb4dd6e52e1a81673ea0daef4bf870329535ab3c074b9. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/GBH5G2000123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5630ce2cc511fefa256de206d912ab413574525083ed8ea2364d57ca8c36a88. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/GBH5G2000124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8cbc1cb48dd2c727df3cedf1aa71d955e552ca47fb4160a780e74b1292430ae. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-17T00:12:30Z), 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/GBH5G2000125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x588d3e0ad1641632e2fd11cd6bf823d51024f1de5070878904c8c308e633808f. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/GBH5G2000126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd32bc6b3bfc2035c3c5a5e35e28a8354ca1f6edb8fcbd0aa463d2b2853191785. 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/USRW49005005.