Cindy Cashdollar (born May 25, 1956) is an American musician specializing in steel guitar and dobro. She grew up in Woodstock, New York, where she perfected her skills by playing with bluegrass musici
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 0xc4a592b2c2057a1d33f06f3c22fa3d525e423849d499b138c3eaa9414a28218c. Chain 2 (Bitcoin): anchored in block 953704 (2026-06-14T22:58:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/78c511db-ef52-4d46-a093-e65b3c95bf55.json and https://artists.proofprofile.net/proofs/artist/78c511db-ef52-4d46-a093-e65b3c95bf55.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 0x09fb17a43da07c6e83d40749124af3b88240400d8fdeec579eadaeeea2d99e98. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USAKP0700082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x707856d26a5e141704e23a973ff47ed21420a92f8d3b4354824da32930ae0152. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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/USAKP0700192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x617bbd8a3542fa26b85cfdd2b1d4481836d8489ce1aff46c53e8a392131ed39b. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZGMG1900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x236233caadeee0b25631d4a36b253f02aaaed1eb9a06464890f16add01919d76. 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/QZGMG1900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe093eaca9d12ed01701d4b580fb7d08746f9a77dea3e69c2866c85edc2666c5a. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZGMG1900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x849d18097b225b1a4218e3d7f6038addcd90c859ea8c89801b54c9cb7052a7cc. 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/QZGMG1900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e8589b068d13ef5b64f4ff7f54b423459fe5e2b2c2af2c8a08287c7c06af92a. 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/QZGMG1900012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9d7f3f9a9295fb124b3f53b07afe5398f5cf53af85ba85a57e425ba40481bf6. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/US48Y1000006.
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 0x96300869253101494325f49c9dcce51d9e1f9f062368e735b96445790ce3c5ef. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/QZGMG1900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee79ff7ae0ce4498d234733c2f9822a443333698c5011565cefad37be596aaa4. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/QZGMG1900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1261470cd171420d8cf4d445d4f6531d2bca2e27231ebbfeea4cd58ba7bbe17. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/QZGMG1900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e79ab9e87c1d3f3f9931f8764f49aa4eded82d9a7d6d66fad476d494c43fdef. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/QZGMG1900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e22fc68bc389cd1215c00d1bf37cb8d63a4b8f0950d9b2fad98772c9c1c4e53. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/QZGMG1900009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81efe11a1364dda365b7e2bfc78be64a8d52fcc4162d4ee044f6a42a17b8c350. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/QZGMG1900010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dcd2f6835335aa3c87e117d821e67028aece0a58638a0859cf2d8da1b11e7e4. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/QZGMG1900011.