Chris Cain (born November 19, 1955) is an American blues musician. He began playing professionally as a teenager in local clubs, at festivals, and at private events. He attended Pomona College. Cain
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 0x91d2db065743d70adab4e735645bd851bdedb6171f3cd874a06eacecd6751a01. 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/2174c63a-af77-4941-9de6-d6440ff909f7.json and https://artists.proofprofile.net/proofs/artist/2174c63a-af77-4941-9de6-d6440ff909f7.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 0x5073c637d74fb9ecf5e63201fdb905fcb47a470812b84b022ddc282e81eb8ef8. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USBP10374007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaec6568bedfb7f0e940179ef60faf7b87c945ca5d04b99ef5baf0c8bce13424d. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USCGJ0704892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5e73e8c6fb9b6976bf93235f2a509ad185ca3a6545ac47d635059e433392d5a. 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/USCGJ0704896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c593f9984e1829b39e0e8fd3ede4b5e82ce44807342644b11ecbb6cd98b0d70. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/USCGJ0719990.
I Don't Know Exactly What's Wrong With My Baby
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x006e75d94bed46d501af6b3f1b473e7465f9f606413f9a5af732b57dcad95a2e. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USARL2100309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x215ee56d032088f964e36421b59d1e96404298dbb80d82b64d738e2923cba813. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/USARL2100311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96d677e93b07ed6a53a43bb1307d9ae23941cd46c6367a2e37c2f80eaae97fcb. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USARL2100312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d7cda026939991348a01424272dbeec264d72b52528683b7aacf7e37f932b58. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/USARL2402103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55faa6a872ae68d960196351859edca564ae3bff1d152291a7fd60afdf278a77. 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/USARL2402104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7fa234041130d7f023d868f785104099d22cc3a1ee0ce54462b02992f6d427b. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USARL2402107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33f7c7966bb5162b90817021ca0f92e868107ef113976ecfceaabb0d0a0c478d. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/USARL2402108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc13698e6098bff31d69ceafeb9a3946e9c6f45c0b4cae234f2bb86cf69bb8236. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USARL2402109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9df3e1abae76ae56c58be83a45c7f39cb3715956a6156f5ad251b83cbcea2fb8. 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/USARL2402110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b2f84081dad34e6c0340f148e1fb80cc7ac26f6fef087dd46b02d232d0bea32. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/USARL2402111.